WELD CHECKER
MM-370B
OPERATION MANUAL
Thank you for your purchase of the Miyachi Weld Checker MM-370B.
Please read this manual carefully to ensure correct use. Keep the manual
handy after reading for future reference.
Q08OM1163229-05
MM-370B
Contents
1. Special Notes .............................................................................................................................1-1
(1) Safety Precautions.................................................................................................................................................1-1
(2) Handling Precautions ............................................................................................................................................1-4
(3) Model-Specific Function........................................................................................................................................1-4
2. Features .....................................................................................................................................2-1
3. Packing List ...............................................................................................................................3-1
(1) Accessories ............................................................................................................................................................3-1
a. MM-370B-00-00 .................................................................................................................................3-1
b. MM-370B-00-01/00-04 .....................................................................................................................3-1
(2) Options....................................................................................................................................................................3-2
a. For MM-370B-00-00/00-01/00-04 ...................................................................................................3-2
b. For MM-370B-00-01/00-04 ...............................................................................................................3-2
c. For MM-370B-00-01...........................................................................................................................3-3
d. For MM-370B-00-04...........................................................................................................................3-3
4. Name and Function of Each Part .............................................................................................4-1
(1) Front.........................................................................................................................................................................4-1
(2) Rear.........................................................................................................................................................................4-3
5. Operation Flow ..........................................................................................................................5-1
6. Installation and Connections....................................................................................................6-1
(1) Installing the MM-370B.......................................................................................................................................6-1
(2) Preparations for Measurement – Connection between the MM-370B and Measurement Devices .......6-2
a. Connecting the Toroidal Coil and the Voltage Detection Cord ...............................................................6-2
b. Connecting the Displacement Sensor (Force/displacement-equipped specification function) ...............6-4
c. Connecting the Force Sensor (Force/displacement-equipped specification function) ............................6-7
d. When Using an External ±10 V Voltage Input (Force/displacement-equipped specification function)....6-9
7. Basic Operation .........................................................................................................................7-1
(1) Startup.....................................................................................................................................................................7-1
(2) Using the Encoder .................................................................................................................................................7-2
a. Selecting Menus.....................................................................................................................................7-2
b. Moving the Cursor and Changing Parameters .......................................................................................7-3
c. Scrolling a Screen ..................................................................................................................................7-4
(3) Shutdown................................................................................................................................................................7-5
8. Operation Screens.....................................................................................................................8-1
(1) Operation Screen Organization ...........................................................................................................................8-1
(2) Description of the Operation Screens .................................................................................................................8-3
a. MEASUREMENT Screen.......................................................................................................................8-3
b. VIEW Screen..........................................................................................................................................8-4
c. WAVEFORM Screen..............................................................................................................................8-6
d. WAVEFORM Screen (Time Axis)...........................................................................................................8-7
e. WAVEFORM Screen (Vertical Axis).......................................................................................................8-8
f. WAVEFORM Screen (Measurement Mode) ..........................................................................................8-9
g. ALL CYCLE Screen .............................................................................................................................8-10
h. ALL CYCLE (Force) Screen .................................................................................................................8-11
i. WAVEFORM (FORCE) Screen............................................................................................................8-12
j. SETUP (1) Screen ...............................................................................................................................8-16
k. SETUP (2) Screen ...............................................................................................................................8-26
l. SETUP (3) Screen ...............................................................................................................................8-32
m. SETUP (4) Screen ...............................................................................................................................8-35
n. PRINT Screen ......................................................................................................................................8-37
o. COMMUNICATION Screen..................................................................................................................8-40
1
MM-370B
p. USB Screen .........................................................................................................................................8-43
q. HISTORY Screen.................................................................................................................................8-46
r. DATA READ Screen ............................................................................................................................8-48
s. STATUS (1) Screen .............................................................................................................................8-50
t. STATUS (2) Screen .............................................................................................................................8-53
u. STATUS (3) Screen .............................................................................................................................8-55
v. I/O SET (1) Screen...............................................................................................................................8-56
w. I/O SET (2) Screen...............................................................................................................................8-59
x. I/O TEST Screen..................................................................................................................................8-60
9. Measurement .............................................................................................................................9-1
(1) Measuring Current (Current Flow Time)/Voltage...............................................................................................9-1
(2) Measuring Displacement (Force/displacement-equipped specification function) .........................................9-7
(3) Measuring Force (Force/displacement-equipped specification function) .....................................................9-10
10. Interface .................................................................................................................................10-1
(1) Connection Diagram of the External I/O Signals .............................................................................................10-1
a. Input Connector (Using contacts or open-collector (sink-type) PLC sequencer as input signals) ........10-1
b. Input Connector (Using voltage-output (source-type) PLC sequencer as input signals) ......................10-2
c. Output Connector.................................................................................................................................10-3
d. Optional Connector (Force/displacement-equipped specification only)................................................10-4
(2) Description of the External I/O Signals..............................................................................................................10-4
a. Input Connector (D-Sub, 25-pin) ..........................................................................................................10-4
b. Output Connector (D-Sub, 15-pin) .......................................................................................................10-6
c. Optional Connector (D-Sub, 15-pin) (Force/displacement-equipped specification function) ................10-7
11. Time Chart..............................................................................................................................11-1
(1) Normal Measurement .........................................................................................................................................11-1
(2) At the Occurrence of Error (Current Upper Limit Error)...................................................................................11-1
(3) NO CURR Input Signal.......................................................................................................................................11-1
12. Data Communication.............................................................................................................12-1
(1) Data Transfer........................................................................................................................................................12-1
(2) Configuration ........................................................................................................................................................12-2
a. RS-485.................................................................................................................................................12-2
b. RS-232C ..............................................................................................................................................12-2
(3) Protocol .................................................................................................................................................................12-3
a. Single-Directional Communication .......................................................................................................12-3
b. Bi-Directional Communication ............................................................................................................12-11
(4) Communication Data ........................................................................................................................................12-13
(5) PC Operation Example.....................................................................................................................................12-18
a. Check if the Hyper Terminal has been Installed on a Computer. .......................................................12-18
b. Install the Hyper Terminal. .................................................................................................................12-19
c. Connect the Weld Checker with a Computer. ....................................................................................12-20
d. Set the Hyper Terminal. .....................................................................................................................12-21
e. Set the Weld Checker. .......................................................................................................................12-23
f. Start Communication..........................................................................................................................12-23
13. Error List ................................................................................................................................13-1
14. Specification ..........................................................................................................................14-1
(1) Measurement Specification................................................................................................................................14-1
(2) Specification of the MM-370B .........................................................................................................................14-6
15. Calibration..............................................................................................................................15-1
16. Appearance ............................................................................................................................16-1
(1) MM-370B...........................................................................................................................................................16-1
(2) Displacement Sensor..........................................................................................................................................16-2
a. GS-1830 Type, Ono Sokki ...................................................................................................................16-2
b. GS-1813 Type, Ono Sokki ...................................................................................................................16-3
2
MM-370B
c. LGK-110 Type, Mitutoyo ......................................................................................................................16-4
d. LGF-125L-B Type, Mitutoyo ................................................................................................................16-5
e. ST1278 Type, HEIDENHAIN................................................................................................................16-6
3
MM-370B
1. Special Notes
(1) Safety Precautions
Before using the weld checker, please read through the Safety Precautions carefully to
ensure proper use.
The precautions listed here are designed to ensure safe use and proactively prevent risks
and damage to the user and other people.
All precautions are critical for safety. Please read them all.
The hazard signs have the following meanings:
DANGER
Mishandling may cause imminent risk of death or serious
injury.
Mishandling may cause risk of death or serious injury.
ATTENTION
Mishandling may cause risk of injury and physical damage.
CAUTION
These signs represent “DON’Ts.” They warn of actions not
covered by the product warranty” in the previous document.
These signs represent “DOs" which must be observed by
the product user.
A sign within a triangular border indicates that a hazard
(danger, warning or caution) is present.
1. Special Notes
1-1
MM-370B
DANGER
NEVER ATTEMPT to disassemble, repair or modify the instrument.
Do not touch any parts inside the instrument. Failure to observe this may result
in an electric shock or fire.
For battery replacement, inspection or repair, please contact your dealer or
Miyachi Corporation.
ATTENTION
DO NOT place your hands between the electrodes.
When welding, be extremely careful not to get your fingers or hand caught in
the electrodes.
During or immediately after welding, DO NOT touch the welded areas or
electrode.
The welded areas of the workpiece, the electrodes and the welding machine’s
arm are extremely hot. To prevent burns, do not touch these areas.
ALWAYS use the specified power supply.
Failure to use the power supply specified in the Instruction Manual may result
in a fire or electric shock.
Use the specified cables and connect them securely.
Failure to do so or improper connection may result in a fire or electric shock.
Keep the power and connection cables free of damage.
Do not walk on, twist or tug the cables.
Damaged cable may result in an electric shock, short circuit, or fire.
For repair or replacement, contact your dealer or Miyachi Corporation.
In the event of an anomaly, STOP the operation.
Continuing the operation with anomalies such as a the generation of fumes, a
burning odor, strange noise, or overheating unattended may result in an
electric shock or fire. In the event of the above or other anomaly, immediately
contact your dealer or Miyachi Corporation.
STAY AWAY from the instrument if you have a pace maker.
If you have a pacemaker, do not approach a welding machine in operation or
the immediate area unless your doctor has given consent.
Welding machines generate a magnetic field which interferes with the
operation of a pacemaker.
ALWAYS wear appropriate work clothing.
Wear protective gear such as gloves, a long-sleeved top and leather apron.
Surface flash and expulsion can cause burns if it contacts the skin.
ALWAYS wear protective goggles.
Directly looking at surface flash and expulsion during welding can temporary
impair vision. Welding spatter can cause permanent eye damage, including
blindness.
1. Special Notes
1-2
MM-370B
CAUTION
DO NOT splash water.
Electrical parts may cause an electric shock or short circuit if they become wet.
Keep the area clear of flammable objects.
Surface flash and expulsion generated during welding may ignite flammable
objects, resulting in a fire. If work involves use of flammable items, place a
non-flammable cover over such items.
DO NOT cover the instrument with a blanket or cloth.
During operation, do not cover the instrument with a blanket or cloth. This may
lead to the instrument overheating and catching fire.
Wipe off dust from the power plug and securely insert it all the way.
Dust or improper insertion may lead to the plug heat up and catch fire.
Hold the power plug when removing or inserting it.
Removing the power plug by pulling on the cable may damage the power
cable, resulting in an electric shock or causing the cable to catch fire.
If you do not use the instrument for extended periods, remove the power
plug from the outlet.
Failure to do so may deteriorate the insulation, resulting in an electric shock,
current leakage or fire.
Provide fire extinguishers.
Provide fire extinguishers at the welding site as a precautionary measure.
Perform maintenance and inspection on a regular basis.
Perform maintenance and inspection regularly and repair damaged areas and
parts before using the instrument.
Wear soundproof earmuffs.
Loud noise may impair hearing.
1. Special Notes
1-3
MM-370B
(2) Handling Precautions
Avoid the following locations when installing the instrument:
Humid (above 70%) or dry (below 40%) locations
Extremely hot (above 45°C) or cold (below 0°C) locations
Near a high noise source
Location where chemical substances, etc. are handled
Location where condensation occurs
Dusty location
Location exposed to direct sunlight
Location that is inclined, insecure, unstable, or weak
Check the voltage and power frequency before installation.
Keep the exterior clean with a soft cloth or cloth lightly dampened with water.
For stains, clean them off using a diluted neutral detergent or alcohol.
Do not use thinner or benzene as they may cause discoloration or deformation.
To prevent malfunction, do not allow any foreign objects such as screws or coins to enter
the instrument.
Operate the instrument according to the procedure described in the Operation Manual.
Operate the switches and buttons with care. Rough operation or the use of a tool or pen
tip may result in damage or malfunction.
(3) Model-Specific Function
The functionality given for “force/displacement-equipped specification” in the operation
manual is available only with the corresponding model. Other functions available are
the same as those of the standard model.
Product model
MM-370B-00-00
MM-370B-00-01
MM-370B-00-04
Standard (no
force/displacement)
Force/displacementequipped
*1
*1: Associated connector with Ono Sokki’s displacement sensor
*2: Associated connector with MITUTOYO’s displacement sensor
1. Special Notes
1-4
*2
MM-370B
2. Features
Miyachi Weld Checker MM-370B is a measuring instrument designed for stationary
resistance welding machines.
The instrument can measure the current, voltage, current flow time, force*1, displacement*1,
and external input voltage (max. ± 10 V)*1 and display their waveforms.
(*1: Force/displacement-equipped specification function. You can select to measure force or
external input voltage in measurement section on the STATUS screen.)
The LCD screen ensures clear viewing of the welding current and force waveforms for optimal
welding quality control. Further, it is equipped with a printer, allowing to print measurement
values and waveforms without having to attach an external printer.
The MM-370B offers the following features:
• Easy to use with an encoder
You can scroll through the screens by simply turning the encoder and select items by moving
the cursor. Pressing the encoder confirms the item selected by moving the cursor.
• Easy-to-view operation screens
The LCD offers approximately four-fold improvement in resolution over our conventional
products, and provides an accurate and clear display of the current and force waveforms.
• Extensive display capability capabilities, obviating the need for an oscilloscope
Incorporates a zoom display function, which permits the user to change the spacings of the
X-axis (time) and Y-axis (force/current) freely, and a cursor measurement function, a
function for measuring the width and time difference between parts of the waveforms by
moving the vertical and horizontal cursors.
• Optimal waveform redisplay (FIT) capability
If the waveform is moved or zoomed off the screen, the instrument can resize the waveform
to its optimal size and redisplay it on screen.
• Simultaneous measurement of force and welding current during current flow
(Force/displacement-equipped specification function)
You can measure the force and welding current during current flow simultaneously using the
optional current/force sensor (MA-770A/MA-771A).
• Storing measured values and waveforms
You can store measured values and waveforms in the built-in flash memory.
• Managing measurement data with PC
You can transmit measurement data to your PC through the RS-232C or RS-485 interface.
• Supports a wide range of welding machines
The instrument supports single-phase AC, DC inverter, AC inverter, and transistor welding
machines.
• Supports multiple languages
Languages available are Japanese, English, Chinese, Korean, German, French, and
Spanish.
2. Features
2-1
MM-370B
3. Packing List
Check the contents of the package. In the case of damaged or missing items, please
contact Miyachi Corporation.
(1) Accessories
a. MM-370B-00-00
Item
Model
Item No.
Qty
Voltage detection cord
42265
1001579
1
Thermal roll paper
TPW058-25A 58×25
1025541
black
1
Case
HDB-CTH(10)
1022933
1
Plug
HDBB-25P(05)
1022559
1
Case
HDA-CTH(10)
1022937
1
Plug
HDAB-15P(05)
1022558
1
AS1163548
1163548
1
Connector
(D-Sub, 25-pin, male)
Connector
(D-Sub, 15-pin, male)
Operation manual
b. MM-370B-00-01/00-04
Item
Model
Item No.
Qty
Voltage detection cord
42265
1001579
1
Thermal roll paper
TPW058-25A 58×25
1025541
black
1
Case
HDB-CTH(10)
1022933
1
Plug
HDBB-25P(05)
1022559
1
Case
HDA-CTH(10)
1022937
1
Plug
HDAB-15P(05)
1022558
1
Case
HDA-CTH(10)
1022937
1
Plug
HDAB-15S(05)
1022416
1
AS1163548
1163548
1
Connector
(D-Sub, 25-pin, male)
Connector
(D-Sub, 15-pin, male)
Connector
(D-Sub, 15-pin, female)
Operation manual
3. Packing List
3-1
MM-370B
(2) Options
a. For MM-370B-00-00/00-01/00-04
Item
Model
Item No.
Power cable*1
KP-35 KS-16A SVT#18×3 B-TYPE
(3-pin plug, for 100–120V AC)
1153158
Power cable*1
KP244 VCTF3*1.25 KS16D 3M gray
(Japan, for 200V AC)
1157798
Power cable*1
CEE3P-W-1.8
round plug, for 200–240V AC
1024118
3-pin/2-pin conversion
adapter for power
cable
KPR-24 (for 100–120V AC)
1025303
Toroidal coil
MB-800K (approx. 250mm in dia.)
1001281
Toroidal coil
MB-400K (approx. 120mm in dia.)
1001277
Toroidal coil
MB-45F (45mm in inner dia.)
1001284
RS-232C
communication cable
C06-09MS-09FS-CROSS-WS15
(1.5mm, 9-pin, male/female)
1026259
RS-485 connector
L-04742-001
Connector (D-Sub 9-pin, male)
1006939
*1: Exclusively for the MM-370B. Do not use for other devices.
b. For MM-370B-00-01/00-04
Item
Model
Item No.
Current/force sensor
MA-770A (4903N (500kgf) max.)
1000578
Current/force sensor
MA-771A (9806N (1,000kgf) max.)
1000577
Force sensor
MA-520 (98.06N (10kgf) max.)
1000561
Force sensor
MA-521 (980.6N (100kgf) max.)
1000562
Force sensor
MA-522 (9806N (1,000kgf) max.)
1000563
Multiconnector
(For External ±10V
voltage)
SRCN6A21-16P
1022267
3. Packing List
3-2
MM-370B
c. For MM-370B-00-01
Item
Model
Item No.
Displacement sensor
GS-1830 (30mm)
Ono Sokki
1163720
Displacement sensor
GS-1813 (13mm)
Ono Sokki
1163721
Displacement sensor*2
LGK-110 (10mm)
MITUTOYO
1024867
Displacement sensor*2
LGF-125L-B (25mm)
MITUTOYO
1155408
Displacement sensor
conversion cable
A-06037-001 (for LGK-110)
1001774
Displacement sensor*3
ST1278 (12mm)
HEIDENHAIN
1024966
Displacement sensor
conversion cable
A-06037-002 (for ST1278)
1001772
*2: Displacement sensor conversion cable, A-06037-001 is required.
*3: Displacement sensor conversion cable, A-06037-002 is required.
d. For MM-370B-00-04
Item
Model
Item No.
Displacement sensor
LGK-110 (10mm)
MITUTOYO
1024867
Displacement sensor
LGF-125L-B (25mm)
MITUTOYO
1155408
Displacement sensor*4
GS-1830 (30mm)
Ono Sokki
1163720
Displacement sensor*4
GS-1813 (13mm)
Ono Sokki
1163721
Displacement sensor
conversion cable
A-09041-001
(for GS-1830/GS-1813)
1044387
*4: Displacement sensor conversion cable, A-09041-001 is required.
3. Packing List
3-3
MM-370B
4. Name and Function of Each Part
(1) Front
⑤
⑥
①
⑦
⑧
②
⑨
③
⑩
⑪
④
⑫
① RESET button:
Resets an error that has occurred.
② POWER lamp:
Lit when the power is ON.
③ Printer cover open button:
Opens the printer cover.
Use this button, when replacing the
printer roll paper.
④ Printer:
Prints measured values, waveforms and
other information.
⑤ Display:
Shows measured values, waveforms and
operation screens.
Refer to Chapter 8, “Operation Screens”
for details of the operation screens.
⑥ Operation buttons A, B, C, D and E:
For performing the operations shown on
the function keys at the bottom of the
operation screens.
The nature of the operation performed by
pressing each button varies from one
operation screen to another.
⑦ MENU button:
Shows the menu list on the display.
4. Name and Function of Each Part
4-1
MM-370B
⑧ HOLD button:
You can perform the following operations
by turning this button ON/OFF. The
HOLD button is OFF when the
instrument is turned on.
Data
measurement
Screen
operation
HOLD button ON
(Hold mode)
No
Yes
HOLD button OFF
(Hold mode canceled)
Yes
No
⑨ HOLD lamp:
Lit green when the HOLD button is ON.
Unlit when the HOLD button is OFF.
⑩ Encoder:
Used to select menus and parameters
and confirm the selection. Refer to “(2)
Using the Encoder” in Chapter 7 for basic
use of the encoder.
⑪ USB memory connector:
Plug the USB memory into this
connector.
⑫ USB memory access lamp:
Lit green when the instrument is
accessing the USB memory.
4. Name and Function of Each Part
4-2
MM-370B
(2) Rear
⑥
①
⑦
⑧
②
⑨
③
⑩
④
⑪
⑤
① External I/O connector 1:
A connector to input signals from and to
peripheral devices.
② External I/O connector 2:
A connector to output signals from and to
peripheral devices.
③ RS-232C/RS-485 connector:
Connector to connect the instrument and PC with
an optional RS-232C communication cable. Used
to transfer measured values and waveform data
to the PC.
④ Toroidal coil connector:
Plug a toroidal coil into this connector.
⑤ Voltage detection cord connector:
Plug the voltage detection cord into this
connector.
⑥ Expansion I/O connector*1:
Connector to input and output signals to and from
the expansion board.
⑦ Displacement sensor connector*1:
Plug an optional displacement sensor (e.g.,
GS-1830) into this connector.
⑧ Force sensor connector*1:
Plug an optional displacement sensor (e.g.,
MA-520/MA-521/MA-522) into this connector.
⑨ Multiconnector*1:
Plug an optional displacement sensor (e.g.,
MA-770A/MA-771A) into this connector.
⑩ Main power switch:
Switch for the main power.
⑪ Power cable connector:
Plug the power cable into this connector.
*1: ⑥ to ⑨ are force/displacement-equipped specification function connectors.
4. Name and Function of Each Part
4-3
MM-370B
5. Operation Flow
The operation flow is shown below.
Install the MM-370B
(Refer to (1) in Chapter 6)
Device connection
Connect with other
devices
Connect measurement devices to the MM-370B
Current
Voltage
measurement
Displacement
measurement *1
Force
measurement *1
Sequencer
Voltage
detection
cord
Displacement
sensor
Force
sensor
PC
(Refer to (2) a,
Chapter 6)
(Refer to (2) b,
Chapter 6)
(Refer to (2) c,
Chapter 6)
or
Current/force
sensor
Toroidal coil
(Refer to (2) a,
Chapter 6)
etc.
(Refer to (2) c,
Chapter 6)
Startup the MM-370B
(Refer to (1) in Chapter 7)
Setup the system and conditions
(Refer to (2) j, k, l, m, r, s, t, Chapter 8)
Perform measurement
Current (current
flow time)
measurement
(Refer to (1) in
Chapter 9)
Voltage
measurement
Displacement
measurement *1
Force
measurement *1
(Refer to (1) in
Chapter 9)
(Refer to (2) in
Chapter 9)
(Refer to (3) in
Chapter 9)
Print measurement results
(Refer to (2) in Chapter 8)
Shut down the MM-370B
(Refer to (3) in Chapter 7)
Using recorded data
(Refer to Chapter 12)
......: Option
*1: Force/displacement-equipped
specification function
5. Operation Flow
5-1
MM-370B
6. Installation and Connections
(1) Installing the MM-370B
1) Place the MM-370B on a stable surface.
2) Connect the supplied power cable to the power cable connector on the rear panel.
Power cable connector
Zoom
6. Installation and Connections
6-1
MM-370B
(2) Preparations for Measurement – Connection between the
MM-370B and Measurement Devices
a. Connecting the Toroidal Coil and the Voltage Detection Cord
To measure the current or voltage, connect the toroidal coil and the voltage detection
cord to the rear panel of the MM-370B.
Toroidal coil
connector
Toroidal coil
Connect a toroidal coil suited to your operating environment.
The toroidal coils of the following sizes can be used:
Toroidal coil model
Type
MB-800K
1x sensitivity coil (with 800mm bracket)
MB-400K
1x sensitivity coil (with 400mm bracket)
MB-45F
10x sensitivity coil (mold type)
Follow the steps described below to connect the toroidal coil and the voltage detection
cord.
1) Plug the toroidal coil’s connector into the toroidal coil connector on the rear panel
of the MM-370B.
Toroidal coil connector
Zoom
6. Installation and Connections
6-2
MM-370B
2) Fit the toroidal coil onto the welding machine’s arm or secondary conductor.
When fitting the coil, be careful with the following:
• Keep the toroidal coil’s hooking bracket as far away from the welding
machine’s arm (secondary conductor) as possible.
• Do not deform the circular form of the toroidal coil when fitting it.
Arm
Do not deform the circular
form of the toroidal coil.
Keep the hooking bracket at the
furthest point from the arm.
Toroidal coil
Hooking
bracket
CAUTION
• If the toroidal coil is fitted in reverse orientation, the waveforms in the
WAVEFORM screen and the analog output waveforms measured with the
oscilloscope are also shown in reverse. The analog output (current and
voltage) is output in reverse side of the waveforms in the WAVEFORM
screen.
• For a band-type toroidal coil, do not deform it when fitting it. Repeated
bending and extension may break internal wires.
6. Installation and Connections
6-3
MM-370B
3) Plug the voltage detection cord connector into the voltage detection cord
connector on the rear panel of the MM-370B.
Voltage detection
cord connector
Toroidal coil
connector
Zoom
4) Connect the voltage measurement cables to the electrodes (positive/negative).
b. Connecting the Displacement Sensor (Force/displacement-equipped specification
function)
As an force/displacement-equipped specification function, the MM-370B can measure
displacement.
To measure displacement, connect a displacement sensor.
Displacement sensor (e.g., GS-1830)
We recommend the following displacement sensors:
Displacement sensor model
GS-1830
*1
Ono Sokki
GS-1813
*1
Ono Sokki
LGK-100
*2
LGF-125L-B
ST1278*2
*1:
Manufacturer
MITUTOYO
*2
MITUTOYO
HEIDENHAIN
When displacement sensors GS-1830 and GS-1813 are used with the
MM-370B-00-04, the following displacement sensor conversion cables are
required.
GS-1830, GS-1813 (Ono Sokki) ------------------------ A-09041-001
6. Installation and Connections
6-4
MM-370B
*2:
When displacement sensors LGK-110, LGF-125L-B and ST1278 are used
with the MM-370B-00-01, the following displacement sensor conversion
cables are required respectively.
LGK-110, LGF-125L-B (MITUTOYO) ------------------- A-06037-001
ST1278 (HEIDENHAIN) -------------------------------------- A-06037-002
Follow the steps described below to connect the displacement sensor.
1) Plug the displacement sensor connector into the displacement sensor connector
on the rear panel of the MM-370B.
Displacement
sensor connector
Zoom
2) Install firmly the displacement sensor not so as to rattle in reference to the figure
below. Make sure the displacement sensor and the sensor head are insulated
before installed.
Displacement
Detecting
Plate
Adjust sensor so that
shaft of sensor
retracts halfway
when electrode is
at bottom.
0
1
2
3
4
0
1
2
3
4
Displacement
Sensor
(Before Forcing)
(After Forcing)
6. Installation and Connections
6-5
MM-370B
ATTENTION
As the figure (A) below, be sure to keep the displacement sensor
perpendicular to the Displacement Detecting Plate. If Displacement Sensor
is slantingly installed like (B) or (C), the life of the sensor becomes shorter.
[Normal]
［Abnormal］
［Abnormal］
θ
θ
Displacement
Detecting
Plate
Displacement
Sensor
(A)
(B)
(C)
If the sensor is pressed beyond the range of measurement, it results in
malfunction.
The measured value of displacement is minus (-) or plus (+).
When NORMAL is selected for DISP in the STATUS (2) screen, the counted value
is plus (+) in the direction of retraction of the movable part of Displacement Sensor
and the value is minus (-) in the extension.
On the other hand, when REVERSE is selected, the counted value is minus (-) in
the direction of retraction of the movable part of Displacement Sensor and the
value is plus (+) in the extension.
Displacement
Detecting Plate
Shaft of
Sensor
Retracting
Displacement
Sensor
Extending
6. Installation and Connections
6-6
MM-370B
c. Connecting the Force Sensor (Force/displacement-equipped specification function)
The MM-370B can measure, as an force/displacement-equipped specification
function, force when connected with force sensor MA-520/MA-521/MA-522 or
current/force sensor MA-770A/MA-771A.
Current/force sensor MA-770A/MA-771A incorporates a current sensor (toroidal
coil), making it possible to measure force and current at the same time simply by
applying a force and passing a current.
Force sensor
Current/force sensor
Follow the steps described below to connect the force sensor.
CAUTION
Before measuring force, be sure to set the force sensor’s offset to “0.” You
can set the offset to “0” by pressing the HOLD button to cancel the HOLD
mode. At this time make sure that no force is applied to the sensor.
1) Plug the force sensor connector into the force sensor connector on the rear panel
of the MM-370B.
Force sensor connector
Zoom
6. Installation and Connections
6-7
MM-370B
2) Attach the force sensor to the welding machine’s electrodes.
When attaching the sensor, be careful with
the following:
Align the centers.
• Be sure that the center of the sensor’s
detection area is aligned with the centers
of the welding machine’s electrodes.
Apply force
perpendicularly.
• Be sure that the force is applied
perpendicularly to the force sensor.
Force sensor
Electrode
Follow the steps described below to connect the current/force sensor.Electrode
CAUTION
• When using a current/force sensor, do not connect any device to the
toroidal coil connector.
• The MM-370B is calibrated one to one with the current/force sensor. Do
not use any other sensors. If you purchase a current/force sensor later,
the sensor and MM-370B must be adjusted as a set. In this case, please
contact Miyachi Corporation. When you purchased the MM-370B and
current/force sensor as a set, they have already been adjusted and can
be used as is.
• Before measuring force, be sure to set the force sensor’s offset to “0.”
You can set the offset to “0” by pressing the HOLD button to cancel the
HOLD mode. At this time make sure that no force is applied to the sensor.
1) Plug the current/force sensor connector into the multiconnector on the rear panel
of the MM-370B.
Multiconnector
Zoom
6. Installation and Connections
6-8
MM-370B
2) Attach the current/force sensor to the welding machine’s electrodes.
When attaching the sensor, be
careful with the following:
• Be sure that the center of the
sensor’s detection area is
aligned with the centers of the
welding machine’s electrodes.
• Be sure that the force is
applied perpendicularly to the
sensor.
Welding head
Clamp the
current/force sensor
between the
electrodes, and apply
force and current.
Electrode
Release
Current/force sensor
Apply force
Electrode
d. When Using an External ±10 V Voltage Input (Force/displacement-equipped
specification function)
The MM-370B’s force/displacement-equipped specification allows for force
measurement using a commercial force sensor and force sensor amplifier connected
to the external ±10 V voltage input.
(Have ready a force sensor and force sensor amplifier—purchased separately.)
Follow the steps described below to connect the external ±10 V voltage equipment.
1) External ±10 V Voltage Input Connection Diagram
Force sensor
amplifier
16-pin female
multiconnector
10 V voltage input
external ±10V
voltage
GND
GND
The 16-pin female multiconnector is optional.
(Multiconnector SRCN6A21-16P: Japan Aviation Electronics Industry)
6. Installation and Connections
6-9
MM-370B
2) Plug the multiconnector into the multiconnector on the rear panel of the
MM-370B.
Multiconnector
Zoom
3) Connect the force sensor and the force sensor amplifier.
CAUTION
Before measuring the force, be sure to set the force sensor’s offset to “0.” At
this time make sure that no force is applied to the sensor.
A force sensor with a voltage output in the ±10 V range can be used. (The
LA-1022 from TOYO SOKKI, for example, can be used.)
6. Installation and Connections
6-10
MM-370B
7. Basic Operation
(1) Startup
1) Set the main power switch on the rear panel to the ON position ( | side).
ON position
( | side)
Zoom
An operation screen appears on the display after a while.
7. Basic Operation
7-1
MM-370B
(2) Using the Encoder
This section describes how to use the MM-370B’s encoder.
You can perform the operations described in the table below by turning the encoder
clockwise or counterclockwise.
Encoder
CW
CCW
Selecting menus
Down
Up
Moving cursor
Right or Down
Left or Up
Changing parameter
(value)
+ (Up)
- (Down)
Changing parameter
(setting)
Next
Previous
Scrolling screen
Right or Down
Left or Down
You can confirm the selected menu or parameter by pressing the encoder.
a. Selecting Menus
1) Press the MENU button.
The menu list appears on the left side of the screen.
2) Turning the encoder clockwise or counterclockwise, move to the desired menu.
3) Press the encoder to confirm the menu selection.
The operation screen for the selected menu appears.
Refer to Chapter 8 “Operation Screens” for operations in the operation screens.
7. Basic Operation
7-2
MM-370B
b. Moving the Cursor and Changing Parameters
1) Turning the encoder clockwise or counterclockwise, move to the input field of the
desired parameter. You can move the cursor to the right or down by turning the
encoder clockwise and to the left or up by turning it counterclockwise.
In this screen example, the cursor is at the TRIGGER input field. The cursor
moves to the input fields of MODE, CURRENT and so on as you turn the encoder
clockwise.
Current cursor position
(Input field highlighted in yellow)
2) Press the encoder to select an input field and make it ready for entry.
The parameter input field is selected, turning its background blue.
Select an input field
(ON when highlighted in blue)
3) Turning the encoder clockwise or counterclockwise, show the desired value.
When the parameter is numerical, the value increases as you turn the encoder
clockwise and decreases as you turn it counterclockwise. When the parameter is
an option (item), the next item appears as you turn the encoder clockwise, and the
previous item appears as you turn it counterclockwise.
In the figure, AUTO is
selected by turning the
encoder clockwise once.
4) Press the encoder.
This sets the selected value for the parameter, turning the input field background
back to yellow.
7. Basic Operation
7-3
MM-370B
c. Scrolling a Screen
If the scroll (SCRL) key appears among the function keys at the bottom of the
operation screen, you can scroll the screen using the encoder.
1) Press the operation button (one of A to E) below the SCRL key.
In this screen example (ALL CYCLE screen (FORCE)), press operation button C.
A
B
C
D
E
Scrolling becomes enabled, turning the SCRL key background to yellow.
2) Turn the encoder clockwise or counterclockwise.
The screen scrolls down as you turn it clockwise, and up as you turn it
counterclockwise.
3) When you are finished scrolling, press the operation button (one of A to E) below
the SCRL key.
In this screen example (ALL CYCLE screen (FORCE)), press operation button C.
Scrolling becomes disabled, turning the SCRL key background back to gray.
7. Basic Operation
7-4
MM-370B
(3) Shutdown
1) Set the main power switch on the rear panel to the OFF position (O side).
OFF position
(O side)
Zoom
7. Basic Operation
7-5
MM-370B
8. Operation Screens
(1) Operation Screen Organization
Press the MENU button to display the menu list, and select a menu using the encoder.
At this time, the operation screen for the selected menu appears. The MM-370B’s
operation screens are organized as shown below.
A: To SETUP 1 screen
B: To SETUP 3 screen
C: To STATUS screen
A, B, C
MEAUREMENT
screen
E
VIEW screen
E
E
WAVEFORM
screen
(Time Axis)
E
WAVEFORM
screen
(Vertical Axis)
B
WAVEFORM
screen
C
D
E
WAVEFORM
screen
E (Measurement Mode)
VIEW screen
Menu list
ALL CYCLE
screen
E
A
ALL CYCLE
(Force)
screen
A
WAVEFORM
(FORCE)
screen
SETUP (1)
screen
A
SETUP (2)
screen
B
PRINT
screen
E
COMMUNICATION
screen
A
A
SETUP (3)
screen
B
B
Previous
screen
A
SETUP (4)
screen
USB
screen
A
HISTORY
screen
E
Previous
screen
A
DATA READ
screen
A
STATUS (1)
screen
Screen switchover
sequence through
menu selection
Screen switchover
sequence through
operation buttons
(A to E)
A
STATUS (2)
Screen
B
D
A
STATUS (3)
screen
B
C
E
I/O SET (1)
screen
B
I/O TEST
screen
E
8. Operation Screens
8-1
A
I/O SET (2)
screen
MM-370B
• Making Measurement while Displaying Data on Screen
You can measure current, force and others in the MEASUREMENT, WAVEFORM and ALL
CYCLE screens.
The MEASUREMENT screen accepts next measurement even while the screen is being
updated following a measurement.
In contrast, the WAVEFORM and ALL CYCLE screens accept next measurement only after
the screen is updated.
If you perform the operation to cancel the hold with data shown in a screen other than the
Measurement, WAVEFORM and ALL CYCLE screens, the display returns to the
MEASUREMENT screen to cancel the hold, after which next measurement starts.
8. Operation Screens
8-2
MM-370B
(2) Description of the Operation Screens
a. MEASUREMENT Screen
(1)
(2)
(3)
(4)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Measurement
item
Top:
(3)
Measured
values
Shows the measurement value of the each item.
(4)
Function keys
SETUP
Pressing operation button A displays the
SETUP (1) screen.
LIMITS
Pressing operation button B displays the
SETUP (3) screen.
STATUS
Pressing operation button C displays the
STATUS (1) screen.
SAVE
Pressing operation button D saves the
measured values, all cycle, and waveforms
to flash memory in the MM-370B. The
MM-370B operates in the same manner
as when saving the HISTORY screen. For
more information, refer to the description of
the HISTORY screen.
VIEW
Pressing operation button E displays the
VIEW screen.
Shows five measurement items. Measurement
items can be selected in the VIEW screen.
Bottom: Shows the measurement range for each
measurement item in brackets.
8. Operation Screens
8-3
MM-370B
b. VIEW Screen
(1)
(2)
(3)
(4)
No.
(1)
Item
Description
Select five measurement items from the following:
• CURRENT (RMS)
Shows the arithmetic mean RMS current over the
measurement interval in arithmetic mean mode.
• CURRENT (PEAK)
Shows the peak current during current flow.
• VOLTAGE (RMS)
Shows the arithmetic mean RMS current over the
measurement interval in arithmetic mean mode.
• VOLTAGE (PEAK)
Shows the peak current during current flow.
• WELD TIME
Shows the time from the detection of a current trigger
to when the current flow is determined to be
terminated.
• CONDUCTION ANGLE
Shows the maximum conduction angle within the
current flow time.
• POWER
Shows the mean power over the measurement interval.
• RESISTANCE
Shows the mean resistance over the measurement
interval.
• COUNT
Shows the counter that indicates the number of
measurements. It counts up irrespective of OK/NG
judgment against upper and lower limits.
*1
• FORCE AVERAGE 1 ,
*1
FORCE AVERAGE 2
Shows the mean force over the force measurement
interval. You can specify two measurement ranges for
a single force application.
(Continued to
next page)
• FORCE PEAK
Shows the peak force.
MEAS 1 to 5
8. Operation Screens
8-4
MM-370B
No.
Item
Description
• REAL TIME FORCE*1
The MM-370B constantly measures the force while
the hold is canceled. The MM-370B stops
measurement when put in hold mode. Measurement is
made at intervals of twice a second. Here, if you wish
to select REAL TIME FORCE for measurement, select
FORCE for TRIGGER and REAL TIME for MODE in
the SETUP (1) screen.
• FORCE TIME*1
Shows the time from when the force signal exceeds the
force start level to when the signal falls below the force
end level.
• EXTERNAL PEAK*1
Shows the mean external input voltage converted at
the preset conversion factor.
• PEAK EXTERNAL VOLTAGE (P-EXT)*1
Shows the peak external input voltage converted at the
preset conversion factor.
• REAL TIME EXT (R-EXT)*1
The MM-370B constantly measures the external ±10
voltage while the hold is canceled. The MM-370B
stops measurement when put in hold mode.
Measurement is made at intervals of twice a second.
Here, if you wish to select R-EXT for measurement,
select EXTERNAL for TRIGGER and CONSTANT for
MODE in the SETUP (1) screen.
• EXTERNAL TIME*1
Shows the time from the start to the end of external
voltage input.
• DISTANCE*1
Starts measurement from the start of current flow and
shows the displacement at the end of the delay time.
• REAL TIME DIST*1
The MM-370B constantly measures the DISTANCE
while the hold is canceled. The MM-370B stops
measurement when put in hold mode. Measurement is
made at intervals of twice a second. Here, if you wish
to select REAL TIME DIST for measurement, select
DISTANCE for TRIGGER and REAL TIME for MODE
in the SETUP (1) screen.
(1)
MEAS 1 to 5
(Continued
from previous
page)
(2)
WAVE 1 to 4
Select four items to display in the WAVEFORM screen
from the following:
CURR, VOLT, POWER, RESIST, FORCE*1,
EXTERNAL*1, DISTANCE*1
(3)
Display
ON/OFF
Select whether to show the waveforms by selecting
ON/OFF.
(4)
Function keys
BACK
*1:
Pressing operation button E returns the display
to the previous screen (MEASUREMENT or
WAVEFORM screen).
Force/displacement-equipped specification function
8. Operation Screens
8-5
MM-370B
c. WAVEFORM Screen
(1)
(3)
(2)
(4)
(5)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Waveform
Shows the waveforms of four items on the grid. Waveform
display items can be selected in the VIEW screen.
(3)
Grid spacing
Shows the grid spacings for the four waveforms shown on
the grid.
(4)
Measured
values
Shows the measured values of five items. Measurement
items can be selected in the VIEW screen.
(5)
Function keys
FIT
Pressing operation button A redisplays the
waveforms by automatically resizing them to
fit into the screen by the FIT feature.
X_axis
Pressing operation button B displays the
WAVEFORM screen (time axis).
Y_axis
Pressing operation button C displays the
WAVEFORM screen (vertical axis).
CURSOR
Pressing operation button D displays the
WAVEFORM screen (measurement),
switching the instrument to measurement
mode.
VIEW
Pressing operation button E displays the
VIEW screen.
8. Operation Screens
8-6
MM-370B
d. WAVEFORM Screen (Time Axis)
(1)
(3)
(2)
(4)
(5)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Waveform
Shows the waveforms of four items on the grid. Waveform
display items can be selected in the VIEW screen.
(3)
Grid spacing
Shows the grid spacings for the four waveforms shown on
the grid.
(4)
Measured
values
Shows the measured values of five items. Measurement
items can be selected in the VIEW screen.
(5)
Function keys
MOVE
Pressing operation button A makes it possible
to move the waveforms. In this condition, turn
the encoder clockwise or counterclockwise.
This moves the waveforms to the right or left.
Pressing operation button A again locks the
waveforms.
INTVL
Pressing operation button B makes it possible
to adjust the grid spacing on the waveforms. In
this condition, turn the encoder clockwise or
counterclockwise. This increases or decreases
the grid spacing of the waveform’s time axis (X
axis). Pressing operation button B again locks
the grid spacing on the waveforms.
BACK
Pressing operation button E returns the display
to the WAVEFORM screen.
8. Operation Screens
8-7
MM-370B
e. WAVEFORM Screen (Vertical Axis)
(1)
(3)
(2)
(4)
(5)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Waveform
Shows the waveforms of four items on the grid. Waveform
display items can be selected in the VIEW screen.
(3)
Grid spacing
Shows the grid spacings for the four waveforms shown on
the grid.
(4)
Measured
values
Shows the measured values of five items. Measurement
items can be selected in the VIEW screen.
(5)
Function keys
The function keys above operation buttons A to D show
the item names for the displayed waveforms. The
displayed item names vary depending on the selection of
waveform display items.
(In the above screen example, current (CURR), voltage
(VOLT), power (POWER) and resistance (RESIST) are
selected as waveform display items. Thus, these four
items are shown on the function keys.)
Pressing one of operation buttons A to D makes it possible
to adjust the grid spacing for the vertical axis (Y axis) of
the corresponding item. In this condition, turn the encoder
clockwise or counterclockwise. This increases or
decreases the grid spacing of the waveform’s vertical axis
(Y axis). Pressing that operation button (A to D) again
locks the grid spacing for the waveform’s vertical axis (Y
axis).
BACK
Pressing operation button E returns the display
to the WAVEFORM screen.
8. Operation Screens
8-8
MM-370B
f. WAVEFORM Screen (Measurement Mode)
(1)
(3)
(2)
(4)
(5)
Cursor
(6)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Waveform
Shows the waveforms of four items on the grid. Waveform
display items can be selected in the VIEW screen.
(3)
Grid spacing
Shows the grid spacings for the four waveforms shown on
the grid.
(4)
Cursor
position
information
Shows the current position information of the cursor. You
can move the white line (cursor) on the grid by turning the
encoder clockwise or counterclockwise.
(5)
Measured
values
Shows the measured values of the waveforms at the point
in time indicated by the cursor.
(6)
Function keys
FIT
Pressing operation button A redisplays the
waveforms by automatically resizing them to
fit into the screen by the FIT feature.
X_axis
Pressing operation button B displays the
WAVEFORM screen (time axis).
Y_axis
Pressing operation button C displays the
WAVEFORM screen (vertical axis).
CURSOR
Pressing operation button D terminates the
measurement mode.
VIEW
Pressing operation button E displays the
VIEW screen.
8. Operation Screens
8-9
MM-370B
g. ALL CYCLE Screen
(1)
(3)
(2)
(4)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
RMS per
cycle*2
Shows the RMS current, voltage and conduction angle*1
every half cycle in AC mode and every 1 ms in DC mode.
The area with values shown in blue represents the
calculation interval.
(3)
Measured
values
Shows the measured values of five items. Measurement
items can be selected in the VIEW screen.
(4)
Function keys
FORCE
Pressing operation button A displays the
ALL CYCLE screen (Force).
RECALC
Pressing operation button B recalculates
the measured current and voltage. Use this
function to redo the calculation of the
arithmetic mean over a new calculation
interval after changing the start and end
cycle (MEAS START, MEAS END) settings
in the SETUP (1) screen.
SCROLL
Pressing operation button C and turning
the encoder clockwise or counterclockwise
scrolls the screen down or up.
*1:
*2:
Conduction angle appears only when AC is selected for CURR and CYC-50/60
Hz, CYC-*** Hz or CYC-LONG is selected for TIME in the SETUP (1) screen.
RMS per cycle does not appear if ms-SHORT is selected for TIME in the SETUP
(1) screen. RMS per cycle does not also appear if current is not measured.
8. Operation Screens
8-10
MM-370B
h. ALL CYCLE (Force) Screen
(1)
(3)
(2)
(4)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
RMS per cycle
Shows the RMS FORCE every 10 ms. The area with
values shown in blue represents the calculation interval.
(3)
Measured
value*1*2
Shows the measured values of five items. Measurement
items can be selected in the VIEW screen.
(4)
Function keys
CURR
Pressing operation button A displays the
ALL CYCLE screen.
RECALC
Pressing operation button B recalculates
the measured force. Use this function to
redo the calculation of the mean over a
new calculation interval after changing the
start and end cycle (FORCE START TIME,
FORCE END TIME) settings in the SETUP
(3) screen.
SCROLL
Pressing operation button C and turning
the encoder clockwise or counterclockwise
scrolls the screen down or up.
*1:
*2:
Force/displacement-equipped specification function
Not shown if force is not measured.
8. Operation Screens
8-11
MM-370B
i. WAVEFORM (FORCE) Screen
The WAVEFORM (FORCE) screen is for checking the timing from when the force
starts, the current flows, until when the force ends. Displays waveforms and
measurement values. Measurement values are displayed in English only.
Note1: This function is used on the MM-370B’s force/displacement-equipped
specification only. To use the WAVEFORM (FORCE) screen, set the
followings in advance.
1) Set TRIGGER to FORCE and MODE to NORMAL in the SETUP (1)
Screen.
2) Set SELECT MEAS to FORCE in the STATUS (1) screen.
3) Select FORCE and FORCE TIME for MEAS in the VIEW screen, which is
displayed when operation button E in the MEASUREMENT or
WAVEFORM screen is pressed.
Also, the force waveform can be displayed when the force reaches the preset
force trigger level and the current reaches the current trigger level, and then
both force and current are measured.
Note2: This screen is shown only when the WAVEFORM (FORCE) screen is selected
from the menu list. When the HOLD is canceled, the screen changes to the
other screen. To display the force waveforms, make settings in the
WAVEFORM screen.
(1)
(2)
(3)
(4)
No.
Item
Description
(1)
SCH.#
Shows the measurement schedule number used (1 to
127). On the other hand, you can change schedules by
selecting this field with the encoder and turning the
encoder clockwise or counterclockwise. The details of the
schedules can be set using the SETUP (1) to (4) screens.
(2)
Waveform
display*4
Shows the current*2, force*2 and force external trigger*1
waveforms.
(3)
Force time*4
Shows the following items: ((1) to (6) correspond to the
numbers in the figure on the next page.)
Force 1 (FORCE 1)*3:
Mean force over force calculation interval 1
Force 2 (FORCE 2)*3:
Mean force over force calculation interval 2
(Continued to
next page)
8. Operation Screens
8-12
MM-370B
No.
Item
Description
*3
(3)
Force time
(Continued
from previous
page)
Force Time (FORCE) :
Time from when the force signal exceeds the force start
level to when the signal reaches the force end level
Force Start Time (ELEC CLOSE)*1 (1):
Time from the force external trigger input to when the force
signal exceeds the force start level
Squeeze Time (SQUEEZE)*1 (2):
Time from the force external trigger input to the start of
current flow
Force Stabilization Time (SQZ DELAY)*2 (3):
Time from when the force signal exceeds the force start
level to the start of current flow
Hold Time (HOLD)*2 (4):
Time from the end of current flow to when the force signal
falls below the fall level
Force Completion Time (TIME TO FRC)*1 (5):
Time from the force external trigger input to when the force
signal exceeds the rise level
Current Start Time (SQUEEZE ADJ)*2 (6):
Time from when the force signal exceeds the rise level to
the start of current flow
(4)
Function keys
FIT
Pressing operation button A redisplays the
waveforms by automatically resizing them to fit
into the screen by the FIT feature.
MOVE
Pressing operation button B makes it possible
to move the waveforms. In this condition, turn
the encoder clockwise or counterclockwise.
This moves the waveforms to the right or left.
Pressing operation button B again locks the
waveforms.
INTVL
Pressing operation button C makes it possible
to adjust the grid spacing on the waveforms. In
this condition, turn the encoder clockwise or
counterclockwise. This increases or decreases
the grid spacing of the waveform’s time axis (X
axis). Pressing operation button C again locks
the grid spacing on the waveforms.
*1:
*2:
*3:
*4:
Shown when force and current are measured using the force external trigger.
Shown when force and current are measured.
Not shown if FORCE or FORCE TIME is not selected in the VIEW screen.
Force/displacement-equipped specification function. To display these items,
select FORCE for TRIGGER and NORMAL for MODE in the SETUP (1) screen.
8. Operation Screens
8-13
MM-370B
Also, select FORCE for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
There are two ways for measurement, a way to start when the weld force reaches the
preset force trigger level without using the force external trigger signal and a way to
start measurement using the force external trigger signal (force valve driving signal)
together.
In the first case, Force start time, Squeeze time and Force completion time cannot be
measured, but in the latter case, all items can be measured by inputting the force
external trigger signal (force valve driving signal).
Note: Force 1, Force 2 and force time are displayed when they are set in the VIEW
screen. (Refer to (2) b in Chapter 8.)
• Way to start when the weld force reaches the preset force trigger level
The timing from when the force starts, the current flows, until when the force ends is
measured. When the weld force exceeds the force trigger level, the measurement
starts. For the force trigger level, refer to the STATUS (1) screen. Taking the force start
point as the reference point of time axis (horizontal axis), force and current waveforms
are displayed and each timing can be observed. The unit of horizontal axis is ms.
Force 1, Force 2, Force time, Current stabilization time, Hold time, and Current start
time are displayed in the area of displaying measurement values.
Note: The force start point can be measured as the reference point of time axis within
200 ms from the time point that the weld force exceeds the force trigger level.
Waveforms before 200 ms are not displayed.
8. Operation Screens
8-14
MM-370B
• Way to start measurement using the force external trigger (force valve driving signal)
together
The timing from when the force valve driving signal of Head is input, the Head starts
applying force, the welding current flows, the force valve driving signal is turned off,
until when the force ends is measured.
The MM-370B treats the force external trigger signal as 24V DC. Therefore, if the
force valve driving signal is different from this, the signal of force external trigger is
input, instead of the actual force valve driving signal. The force external trigger works
with the voltage of 24V DC input from the input terminal of force external trigger. Turn
off this 24V DC by inputting simultaneously with the force valve driving signal of Head.
Prepare the 24V DC power supply separately. When the force valve uses the Head
with 24V DC specification, you can divide the force valve driving signal to input. The
input terminal of force external trigger signal does not have polarity.
Taking the timing of force external trigger input as the reference point of time axis
(horizontal axis), force external trigger, force and current waveforms are displayed on
the screen and each timing can be observed. The unit of horizontal axis is ms. Since
the screen is for measuring the timing, the vertical axis has no unit. Force 1, Force 2,
Force time, Force start time, Squeeze time, Force stabilization time, Hold time, Force
completion time, and Current start time are displayed in the area of displaying
measurement values.
8. Operation Screens
8-15
MM-370B
j. SETUP (1) Screen
(1)
(2)
Displayed
only when
CYC-***Hz
is selected.
No.
(3)
Item
Description
(1)
SCH.#
Select a measurement schedule number (1 to 127) to set
in the SETUP (1) to (4) screens. You can change schedule
numbers by selecting this field with the encoder and
turning the encoder clockwise or counterclockwise.
(2)
Parameter
setting
TRIGGER
/MODE
Select a measurement trigger from among
the following options of trigger and mode
combinations:
<When TRIGGER: Current (CURRENT) is
selected>
When TRIGGER: Current (CURRENT) is
selected, force and external ±10 V voltage
input are not measured.
• MODE: NORMAL
Current normal mode
The instrument performs measurement
each time a current signal is input,
showing the measured values and
waveforms.
To pass multiple current pulses, refer to
the PULSE MODE settings in the SETUP
(2) screen.
Measurement
Measurement
(Continued
to next
page)
NORMAL
The internal processing time varies depending on the force
and current flow time. As a result, the internal processing
may not be complete before next measurement.
8. Operation Screens
8-16
Internal
Processing Time
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER
/MODE
(Continue
d from
previous
page)
• MODE: SINGLE TRACE
Current single-trace mode
The instrument measures the maximum
measurement range of current upon input
of a current signal, after which it enters
hold mode.
The instrument shows “-” in the measured
value field without showing the measured
value and making any OK/NG judgment
on the value.
SINGLE
TRACE
Maximum measurement
Range of current
Hold
mode
• MODE: NORMAL TRACE
Current normal trace mode
The instrument measures the maximum
measurement range of current upon input
of a current signal, after which it enters
hold mode. After displaying the data on
screen, the instrument goes into wait state
until the next current signal is input. The
instrument shows “-” in the measured
value field without showing the measured
value and making any OK/NG judgment
on the value.
NORMAL
TRACE
Maximum measurement
Range of current
Wait state until the
next current signal
is input after
displaying the data
on screen
The maximum current measurement range
varies as follows depending on the TIME and
Current (CURRENT) settings in the SETUP
(1) screen:
• AC
CYC-50/60Hz, CY-***Hz: 4000 ms
ms:
2000 ms
CYC-LONG:
10000 ms
• DC
(Continued
CYC-50/60Hz:
2000 ms
to next
ms:
2000 ms
page)
ms-SHORT:
100 ms
8. Operation Screens
8-17
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER
/MODE
(Continue
d from
previous
page)
(Continued
to next
page)
*1:
*2:
*3:
*4:
<When TRIGGER: AUTO is selected *1>
• MODE: NORMAL
Auto normal mode
The first input among current, force (or
external ±10 V voltage input)*2 and external
force trigger triggers measurement.
• When current is a trigger
The instrument operates in the same
manner as in current or force in normal
mode.
• When force (or external ±10 V voltage
input)*2 is a trigger
The instrument operates in the same
manner as in force (or external ± 10 V
voltage input)*2 normal mode.
• When external force trigger is a trigger
The instrument operates in the same
manner as in force (or external ± 10 V
voltage input)*2 normal mode. Note,
however, that in the case of external
force trigger, the instrument starts
measurement only upon input of current
or force (or external ±10 V voltage
input)*2.
When you have selected Auto for Trigger,
attach the force sensor. The instrument
performs a zero force adjustment when the
hold mode is turned off.
<When TRIGGER: FORCE is selected *3>
• MODE: NORMAL
Force normal mode
The instrument performs measurement
each time a current signal is input, showing
the measured values and waveforms.
To pass multiple current pulses, refer to the
PULSE MODE settings in the SETUP (2)
screen.
The internal processing time varies depending on the force and
current flow time. As a result, the internal processing may not be
complete before next measurement.
Force/displacement-equipped specification function.
Force when FORCE is selected, and external ±10 V voltage input when External
(EXTERNAL) is selected, for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
Only when FORCE is selected for Measurement Selection (SELECT MEAS) in
the STATUS (1) screen.
Only when External (EXTERNAL) is selected for Measurement Selection
(SELECT MEAS) in the STATUS (1) screen.
8. Operation Screens
8-18
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER
/MODE
(Continue
d from
previous
page)
• MODE: SINGLE TRACE
Force single-trace mode
The instrument measures the maximum
measurement range of current upon input
of a current signal, after which it enters
hold mode. The instrument shows “-” in
the measured value field without showing
the measured value and making any
OK/NG judgment on the value.
• MODE: NORMAL TRACE
Force normal trace mode
The instrument measures the maximum
force measurement time upon input of a
force signal. After displaying the data on
screen, the instrument goes into wait state
until the next force signal is input. The
instrument shows “-” in the measured
value field without showing the measured
value and making any OK/NG judgment
on the value.
Wait state
until the next
force signal
is input after
displaying
the data on
screen
The maximum current measurement range
varies as follows depending on the TIME and
CURRENT settings in the SETUP (1) screen:
• AC
CYC-50/60Hz, CY-***Hz: 4000 ms
ms:
2000 ms
• DC
CYC-50/60Hz:
2000 ms
(Continued
ms:
2000 ms
to next The maximum force measurement range is
page) 6000 ms.
*1:
*2:
*3:
*4:
Force/displacement-equipped specification function.
Force when FORCE is selected, and external ±10 V voltage input when External
(EXTERNAL) is selected, for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
Only when FORCE is selected for Measurement Selection (SELECT MEAS) in
the STATUS (1) screen.
Only when External (EXTERNAL) is selected for Measurement Selection
(SELECT MEAS) in the STATUS (1) screen.
8. Operation Screens
8-19
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER
/MODE
(Continue
d from
previous
page)
• MODE: REAL TIME
Force constant start mode
Force is measured at intervals of half a
second.
In this trigger mode, the instrument
measures only force. To use this trigger
mode, select Constant Force (REAL
TIME) in the VIEW screen. Press the
HOLD button to put the instrument in hold
mode and stop the measurement.
<When TRIGGER: External (EXTERNAL) is
selected *1*4>
• MODE: NORMAL
External ± 10 V voltage input normal
mode
The instrument starts measurement each
time a force signal is input, making an
OK/NG judgment and showing the
measured value and waveform.
To pass multiple current pulses, refer to
the PULSE MODE settings in the SETUP
(2) screen.
(Continued
to next
page)
*1:
*2:
*3:
*4:
The internal processing time varies depending on the force and
current flow time. As a result, the internal processing may not be
complete before next measurement.
Force/displacement-equipped specification function.
Force when FORCE is selected, and external ±10 V voltage input when External
(EXTERNAL) is selected, for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
Only when FORCE is selected for Measurement Selection (SELECT MEAS) in
the STATUS (1) screen.
Only when External (EXTERNAL) is selected for Measurement Selection
(SELECT MEAS) in the STATUS (1) screen.
8. Operation Screens
8-20
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER
/MODE
(Continue
d from
previous
page)
• MODE: SINGLE TRACE
External ±10 V voltage input single trace mode
The instrument measures the maximum
measurement time of external ±10 V
voltage input upon input of this voltage,
after which it enters hold mode. The
instrument shows “-” in the measured value
field without showing the measured value
and making any OK/NG judgment on the
value.
• MODE: NORMAL TRACE
External ± 10 V voltage input normal trace mode
The instrument measures the maximum
measurement time of external ±10 V
voltage input upon input of this voltage.
After displaying the data on screen, the
instrument goes into wait state until the
next external ±10 V voltage input signal is
input. The instrument shows “-” in the
measured value field without showing the
measured value and making any OK/NG
judgment on the value.
NORMAL
TRACE
(Continued
to next
page)
*1:
*2:
*3:
*4:
Wait state
until the
next
external
±10V
voltage
input
signal is
input after
displayed
the data
on screen
Force/displacement-equipped specification function.
Force when FORCE is selected, and external ±10 V voltage input when External
(EXTERNAL) is selected, for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
Only when FORCE is selected for Measurement Selection (SELECT MEAS) in
the STATUS (1) screen.
Only when External (EXTERNAL) is selected for Measurement Selection
(SELECT MEAS) in the STATUS (1) screen.
8. Operation Screens
8-21
MM-370B
No.
(2)
Item
Parameter
setting
Description
TRIGGER/
MODE
(Continued
from
previous
page)
The maximum current measurement range
varies as follows depending on the TIME and
CURRENT settings in the SETUP (1) screen:
• AC
CYC-50/60Hz, CY-***Hz: 4000 ms
ms:
2000 ms
• DC
CYC-50/60Hz:
2000 ms
ms:
2000 ms
The maximum external ±10 V voltage input is
6000ms.
• MODE: REAL TIME
External ±10 V voltage
External ±10 V voltage is measured at
intervals of half a second.
In this trigger mode, the instrument
measures only External ±10 V voltage. To
use this trigger mode, select REAL TIME
EXTERNAL (R-EXT) in the VIEW screen.
Press the HOLD button to put the
instrument in hold mode and stop the
measurement.
<When TRIGGER: Displacement (DISP) is
selected *1>
• MODE: NORMAL
Displacement external normal mode
Measurement starts when the signal from
the displacement external trigger is
closed. The delay time starts at the end of
the current flow time or external trigger,
whichever is later. To pass multiple
current pulses, refer to the PULSE MODE
settings in the SETUP (2) screen.
(Continued
to next
page)
*1:
*2:
*3:
*4:
The internal processing time varies depending on the current
flow time and displacement measurement time. As a result, the
internal processing may not be complete before next
measurement.
Force/displacement-equipped specification function.
Force when FORCE is selected, and external ±10 V voltage input when External
(EXTERNAL) is selected, for Measurement Selection (SELECT MEAS) in the
STATUS (1) screen.
Only when FORCE is selected for Measurement Selection (SELECT MEAS) in
the STATUS (1) screen.
Only when External (EXTERNAL) is selected for Measurement Selection
(SELECT MEAS) in the STATUS (1) screen.
8. Operation Screens
8-22
MM-370B
No.
(2)
Item
Description
Parameter
setting
(Continued
from previous
page)
TRIGGER/
MODE
(Continued
from
previous
page)
CURRENT
• MODE: REAL TIME
Force constant start mode
Force is measured at intervals of half a
second. In this trigger mode, the
instrument measures only displacement.
To use this trigger mode, select Constant
Displacement (REAL TIME DIST) in the
VIEW screen.
Set the measurement current to AC or DC
mode.
AC mode: Select this mode to measure the
current of an AC welding power
supply.
DC mode: Select this mode to measure the
current of a DC welding power
supply.
In AC mode, select from the following:
• CYC-50/60Hz
Select this option to measure
single-phase AC welding current.
Frequency: Automatically detected from
the MM-370B’s power supply
Measurement time: 4,000 ms max.
(50 Hz: 200 CYC, 60 Hz: 240 CYC)
• ms
Select this option to measure AC output
inverter welding current in units of ms.
The measurement time is 2,000 ms or
less.
• CYC-***Hz
Select this option to measure AC output
inverter welding current in units of cycle.
Set the frequency of the current you wish
to pass in FREQUENCY in the SETUP (1)
screen.
Measurement time: 4,000 ms max.
(50 Hz: 200 CYC, 60 Hz: 240 CYC, 250
Hz: 1,000 CYC)
• CYC-LONG
Select this option to measure
single-phase AC welding current for a
long period.
Frequency: Automatically detected from
the MM-370B’s power supply
(Continued
Measurement time: 10 ms max.
to next
(50 Hz: 500 CYC, 60 Hz: 600 CYC)
page)
When you have selected CYC-LONG, you
cannot measure force, external ± 10 V
voltage input and displacement.
TIME
8. Operation Screens
8-23
MM-370B
No.
(2)
Item
Description
Parameter
setting
TIME
(Continue
d from
previous
page)
In DC mode, select from the following:
• CYC-50/60Hz
Select this option to measure DC output
inverter welding current in units of cycle.
Frequency: Automatically detected from
the MM-370B’s power supply
Measurement time: 2,000 ms max.*1
(50 Hz: 100 CYC, 60 Hz: 120 CYC)
• ms
Select this option to measure DC output
inverter welding current in units of ms.
Measurement time: 2,000 ms max.*1
• ms-SHORT
Select this option to measure transistor
welding current.
The current flow time is 1 ms when ms is
selected. In contrast, the current flow time
is every 0.05 ms when ms-SHORT is
selected, thus allowing measurement at
more frequent intervals.
Measurement time: 100 ms max.
When you have selected ms-SHORT, you
cannot measure force, external ±10 V
voltage input or displacement.
CURRENT
RANGE
Select from the following five ranges:
Select one which is larger than the maximum
current of welding current actually measured
and close to the measured current.
The current ranges change as follows
depending on the COIL TYPE setting in the
STATUS (1) screen (Refer to (2) s in Chapter
8 for details of COIL TYPE):
COIL TYPE 1
2.000 kA: 2.000 kA range
6.00 kA: 6.00 kA range
20.00 kA: 20.00 kA range
60.0 kA: 60.0 kA range
200.0 kA: 200.0 kA range
COIL TYPE 10
2.000 kA: 0.200 kA range
6.00 kA: 0.60 kA range
20.00 kA: 2.000 kA range
60.0 kA: 6.00 kA range
200.0 kA: 20.00 kA range
VOLTAGE
RANGE
Select from the following two ranges:
Select one which is larger than the maximum
voltage of welding current actually measured
and close to the measured voltage.
6.00 V: 6.00 V range
20.0 V: 20.0 V range
(Continued to
next page)
*1:
4000 ms max. for displacement measurement. However, 2000 ms max. for
current measurement.
8. Operation Screens
8-24
MM-370B
No.
(2)
(3)
Item
Description
Parameter
setting
(Continued
from previous
page)
Function keys
MEAS
START /
MEAS
END
You can measure RMS current/voltage and
mean power/resistance by specifying an
arbitrary range. Set the interval from the start
to end of the measurement as follows:
• CURRENT: AC, TIME: CYC-50/60 Hz
0.0 to 200.0 CYC (for FREQUENCY: 50 Hz)
0.0 to 240.0 CYC (for FREQUENCY: 60 Hz)
(in units of 0.5 CYC for both)
• CURRENT: DC, TIME: CYC-50/60 Hz
0.0 to 100.0 CYC (for FREQUENCY: 50 Hz)
0.0 to 120.0 CYC (for FREQUENCY: 60 Hz)
(in units of 0.5 CYC for both)
• CURRENT: AC, TIME: CYC-*** Hz
0.0 to 1,000.0 CYC (in units of 0.5 CYC)
• CURRENT: AC, TIME: CYC-LONG
0.0 to 500.0 CYC (for FREQUENCY: 50 Hz)
0.0 to 600.0 CYC (for FREQUENCY: 60 Hz)
(in units of 0.5 CYC for both)
• CURRENT: DC, TIME: ms-SHORT
000.00 to 100.00 ms (in units of 0.05 ms)
• CURRENT: AC, TIME: ms or CURR:
DC, TIME: ms 0000 to 2000 ms (in units of 1
ms)
FREQUE
NCY
CURRENT: AC, TIME: CYC-*** Hz
Set the frequency of the current to be
measured as follows according to the
CURRENT and TIME combination:
M050, M053, M056, M059, M063, M067,
M071, M077, M083, M091, M100, M111,
M125, M143, M167, M200, M250, 050 to 250
Hz (in units of 1 Hz)
Set the M*** frequency when using a Miyachi
AC inverter welding power supply.
NEXT
Pressing operation button A displays the
SETUP (2) screen.
COPY
Pressing operation button E copies the
settings made under the schedule number
001 (all the settings made in the SETUP (1)
to (4) screens) to all the schedule numbers
002 to 127.
Pressing operation button E displays
CANCEL above operation button C and
START (execute) above operation button D.
Press operation button D to copy schedules,
and operation button C to cancel the copying.
8. Operation Screens
8-25
MM-370B
k. SETUP (2) Screen
(1)
Can be
switched
between
NO CURR
TRIG LVL
(2)
Displayed
only when
FORCE is
selected.
(3)
No.
Item
Description
(1)
SCH.#
Select a measurement schedule number (1 to 127) to set in
the SETUP (1) to (4) screens. You can change schedule
numbers by selecting this field with the encoder and turning
the encoder clockwise or counterclockwise.
(2)
Parameter
setting
PULSE
MODE
*1:
Current may be passed several times in a
single welding sequence.
Use the impulse settings to measure such a
current. The impulse settings are designed for
current measurement. Select SET PULSE to
measure an arbitrary stage, ALL PULSE to
measure all stages, and NO COOL to
measure the 2nd stage with no cooling time.
(If you do not wish to specify any stage
number, select SET PULSE for PULSE
MODE, and “0” for PULSE No.)
When a force and multiple currents are
measured at a time, the current of the stage
specified for the impulse settings is displayed
as a measured value. However, the
waveforms which currents are applied are
displayed regardless of the impulse setting.
More waveforms than the impulse settings
may be displayed.
Even if the impulse settings are used, a
welding longer than the following period
cannot be measured. When all pulses, force,
displacement and external ±10 V voltage
input are measured, the cool time is included.
• AC
CYC-50/60Hz, CY-***Hz: 4000 ms
ms:
2000 ms
CYC-LONG:
10000 ms
(Continued • DC
CYC-50/60Hz:
2000 ms*1
to next
ms:
2000 ms*1
page)
CYC-LONG:
100 ms
4000 ms max. for displacement measurement. However, 2000 ms max. for
current measurement.
8. Operation Screens
8-26
MM-370B
No.
(2)
Item
Parameter
setting
Description
PULSE
MODE
(Continued
from
previous
page)
• Specified Pulse (SET PULSE)
When you have selected any of 1 to 20
for PULSE No, the specified stage will
be measured.
When you have selected “2” for PULSE
No, the second stage current will be
measured.
Current trigger start
Set the current flow interval to 500ms or
less.
Force trigger start
When external ±10V voltage input and displacement are
measured, the instrument operates in the same manner as
in the force trigger start.
(In the case of displacement, impulse measurement is
terminated by displacement measurement. Then,
measurement is made as a new current flow.)
When “0” is selected for PULSE No, the
instrument makes all measurement at
measurable intervals. (When force,
external ±10 V voltage input or
displacement is measured, the instrument
makes measurements in the same manner
as when “1” is selected for PULSE No.
Current trigger start
Force trigger start
(Continued
to next
page)
8. Operation Screens
8-27
MM-370B
No.
(2)
Item
Parameter
setting
Description
PULSE
MODE
(Continued
from
previous
page)
(Continued
to next
page)
• All Pulses (ALL PULSE)
Measures the current in the number of
stages (1 to 20) specified by PULSE
No.
As for measurement schedule, the
schedule number selected for
measurement start is used. The
judgment schedules are used
successively.
Ex.: In the case of three-stage current
flow with schedules 5, schedules 5 are
used as measurement schedules
whereas schedules 5, 6 and 7 are used
as judgment schedules respectively for
the first, second and third stages.
When you have selected “0” for PULSE
No, the instrument operates in the same
manner as when “1” is selected.
In All Pulses measurement,
multiple-stage current exceeding
maximum current measurement time
cannot be measured.
When CYC is selected for TIME, at least
1.0 CYC of the current flow interval (time
that current does not flow) is required.
When ms is selected for TIME, at least 2
ms of the interval is required.
If the number of measurement stages
are less than the number of stages
specified by PULSE No, the instrument
makes measurement for the maximum
current measurement time and the
impulse error occurs. When the number
of measurement stages reaches the
number of stages specified by PULSE
No, the measurement ends.
Set all measurement schedules to use in
All Pulses measurement.
For example, when you have selected
“3” for PULSE No and started
measurement with schedules 3, set
measurement schedules 3 to 5. The
following settings are also needed to be
the same in schedules 3 to 5: TRIGGER,
MODE, CURRENT, TIME, CURRENT
RANGE, VOLTAGE RANGE in the
SETUP (1) screen, PULSE MODE,
PULSE No, COOL TIME, CURR FALL
LEVEL, CURR END LEVEL, MEAS
INHIBIT TIME, and MEAS MIN TIME in
the SETUP (2) screen.
When “2” is selected for PULSE No, the
instrument measures the current at the
first and second stages, and if schedules
3 are used for measurement start,
schedules 3 are used as measurement
schedules, and schedules 3 and 4 are
used as judgment schedules respectively
for the first and second stages.
8. Operation Screens
8-28
MM-370B
No.
(2)
Item
Description
Parameter
setting
PULSE
MODE
(Continued
from
previous
page)
Current trigger start
Force trigger start
When external ±10V voltage input and displacement are
measured, the instrument operates in the same manner as
in the force trigger start. (In the case of displacement,
impulse measurement is terminated by displacement
measurement. Then, measurement is made as a new
current flow.)
• No Cooling (NO COOL)
(2nd stage measurement)
Set a measurement start current in NO
CURR TRG LVL. The instrument starts
measurement determining the point in
time where the start current is exceeded
as the measurement start point.
Measurement is possible only if the
current at the second stage is larger
than that at the first stage.
PULSE No. /
NO CURR
TRG LVL
(Continued to
next page)
When SET PULSE or ALL PULSE is
selected for PULSE MODE, set the number
of stages (0 to 20) in PULSE No.
When NO COOL is selected for PULSE
MODE, set a measurement start timing
current for NO CURR TRG LVL. For NO
CURR TRG LVL, set a value within the
specified measurement range.
8. Operation Screens
8-29
MM-370B
No.
(2)
Item
Description
Parameter
setting
(Continued
from previous
page)
COOL TIME
If, during current measurement, the COOL
TIME is shorter than the value specified
here, the instrument makes measurement
determining the current to be a
single-stage current. Set the COOL TIME
in the following ranges:
• When CYC-50/60Hz, CYC-LONG
or CYC-***Hz is selected for TIME
0.0-99.5 CYC
• When ms is selected for TIME
0-99 ms
• When ms-SHORT is selected for
TIME
0.0-9.9 ms
CURR FALL
LEVEL
When DC is selected for CURRENT, you
can measure the current flow time till the
Current Fall Level setting is reached.
Set the Current Fall Level as the ratio to
the peak (10 to 90%).
CURR END
LEVEL
When AC is selected for CURRENT, you
can measure the current flow time till the
Current End Level setting is reached.
Set the Current End Level as the ratio to
the used current range (1.5 to 15.0%).
(Continued to
next page)
8. Operation Screens
8-30
MM-370B
No.
(2)
Item
Description
Parameter
setting
(Continued
from previous
page)
MEAS
INHIBIT
TIME
Set a measurement prohibition time (0.0 to
9.9 sec) following a measurement.
MEAS MIN
TIME
In the early stages of current flow, the
instrument may fail to measure the current
if the current is excessively low. (This likely
occurs if the upslope is used.)
In such a case, set a Forced Measurement
Time.
Set a forced measurement time in the
following ranges:
• When CYC-50/60Hz, CYC-LONG
or CYC-***Hz is selected for TIME
0.5-9.5 CYC
• When ms is selected for TIME
1-99 ms
• When ms-SHORT is selected for
TIME
0.1-9.9 ms
Set a time so that currents of measurable
magnitude (shaded areas in the figure) are
included.
(3)
*1:
Function keys
FORCE
RISE
LEVEL*1/
FORCE
FALL
LEVEL*1
When FORCE is selected for SELECT
MEAS in the STATUS (1) screen, set
FORCE RISE LEVEL and FORCE FALL
LEVEL as the ratio to the peak (10 to 90%).
This setting applies to the time
measurements in the WAVEFORM
(FORCE) screen.
NEXT
Pressing operation button A displays the
SETUP (3) screen.
PREV
Pressing operation button B displays the
SETUP (1) screen.
Force/displacement-equipped specification function.
8. Operation Screens
8-31
MM-370B
l. SETUP (3) Screen
(1)
Can be switched
between EXT
START TIME
and EXT END
TIME
Displayed only
when FORCE
is selected.
(2)
(3)
No.
Item
Description
(1)
SCH.#
Select a measurement schedule number (1 to 127) to set
in the SETUP (1) to (4) screens. You can change schedule
numbers by selecting this field with the encoder and
turning the encoder clockwise or counterclockwise.
(2)
Parameter
setting
FORCE
START
TIME*1/
FORCE END
TIME*1/
EXT START
TIME*1/
EXT END
TIME*1
FORCE
LEVEL1*1 /
FORCE
LEVEL2*1
(Continued to
next page)
By specifying an arbitrary range, you can
measure mean force and external ±10 V
voltage input.
When FORCE is selected for SELECT
MEAS in the STATUS (1) screen, set
FORCE START TIME and FORCE END
TIME in the range from 0 to 6,000 ms (in
units of 10 ms).
As for force, there are two input fields for
each item because you can specify two
ranges for a single measurement and
measure the force at two locations.
When EXT (EXTERNAL) is selected for
SELECT MEAS in the STATUS (1)
screen, set the EXT START TIME and
EXT END TIME in the range from 0 to
6,000 ms (in units of 10 ms).
When FORCE is selected for SELECT
MEAS in the STATUS (1) screen, you
can output signals from external outputs
FORCE LEVEL1 and FORCE LEVEL2 if
the measured value exceeds the set
force level.
There are two input fields because you
can specify two levels for a single
measurement and measure the force
level at two locations.
Set a force level within the set
measurement range.
8. Operation Screens
8-32
MM-370B
No.
(2)
Item
Description
DIST DELAY
TIME*1
Parameter
setting
Set a delay time (welding/displacement
stabilization time) from the end of current
flow or from when the external
displacement trigger turns OFF to when
the displacement measurement position
is reached in the range from 0 to 999ms.
Be sure that the total of the current flow
time and the displacement delay time
(including the cooling time between
current flows) does not exceed the
maximum current measurement range.
When external displacement trigger is not used
①
②
If, following the end of the first stage
current flow, the second stage current
flow occurs before the displacement
delay time elapses, the instrument
measures the displacement delay time
again after the end of the second stage
current flow.
The instrument measures the
displacement after the displacement
delay time elapses following the end of
current flow.
When external displacement trigger is used
③
④
(Continued to
next page)
8. Operation Screens
8-33
If the external displacement trigger turns
OFF after the current flow, the
instrument measures the displacement
after the elapse of the displacement
delay time following the turning OFF of
the external displacement trigger.
If the current flow ends after the external
displacement trigger turns OFF, the
instrument measures the displacement
after the elapse of the displacement
delay time following the end of the
current flow.
On the other hand, if the third stage
current flow occurs after the second
stage current flow shown above, the
instrument operates in the same manner
as when external displacement trigger is
not used.
MM-370B
No.
Item
Description
(2)
Parameter
setting
(Continued
from previous
page)
DIST
LEVEL1*1/
DIST
LEVEL2*1
If the measured value exceeds the set
displacement levels, you can output
signals from external outputs DIST
LEVEL1 and DIST LEVEL2.
There are two input fields because you
can specify two levels for a single
measurement and measure the
displacement level at two locations.
The setting range varies depending on
the DIST RESOLUTION setting in the
STATUS (2) screen.
• When a sensor with 1 μm resolution or
less is used:
-30.000 mm to +30.000 mm
• When a sensor with 1.1 μm resolution
or more is used:
-300.00 mm to +300.00 mm
(3)
Function keys
NEXT
Pressing operation button A displays the
SETUP (4) screen.
PREV
Pressing operation button B displays the
SETUP (2) screen.
0 ADJ
The instrument starts Zero point
adjustment.
*1:
Force/displacement-equipped specification function.
8. Operation Screens
8-34
MM-370B
m. SETUP (4) Screen
(1)
(2)
(3)
No.
Item
Description
(1)
SCH.#
Select a measurement schedule number (1 to 127) to set
in the SETUP (1) to (4) screens. You can change schedule
numbers by selecting this field with the encoder and
turning the encoder clockwise or counterclockwise.
(2)
Parameter
setting
Set upper and lower limits for the five measurement items
selected in the VIEW screen as follows:
CURRENT
(RMS) /
CURRENT
(PEAK)
Set upper and lower limits in the
following ranges depending on the type
of toroidal coil connected and according
to the CURR RANGE setting in the
SETUP (1) screen:
• When 1x sensitivity coil is used:
2.000 kA range: 0.000 to 9.999 kA
6.00 kA range:
00.00 to 99.99 kA
2.000 kA range: 00.00 to 99.99 kA
60.0 kA range:
000.0 to 999.9 kA
200.0 kA range: 000.0 to 999.9 kA
• When 10x sensitivity coil is used:
0.200 kA range: 000.0 to 999.9 kA
0.600 kA range: 000.0 to 999.9 kA
2.000 kA range: 000.0 to 999.9 kA
6.00 kA range:
00.00 to 99.99 kA
2.000 kA range: 00.00 to 99.99 kA
VOLTAGE
(RMS) /
VOLTAGE
(PEAK)
Set upper and lower limits in the
following ranges according to the
VOLTAGE RANGE setting in the SETUP
(1) screen:
6.00 V range: 0.00 to 9.99 V
20.0 V range: 0.0 to 99.9 V
(Continued to
next page)
8. Operation Screens
8-35
MM-370B
No.
Item
Description
Parameter
setting
(Continued
from previous
page)
(3)
Function keys
WELD TIME
Set upper and lower limits in the
following ranges according to the TIME
setting in the SETUP (1) screen:
CYC-50/60Hz, CYC-LONG:
0.0 to 1000.0 CYC
CYC-***Hz:
ms:
0 to 10000 ms
ms-SHORT:
0.00 to 100.00 ms
POWER
0.0 to 300.0 kW
RESISTANCE
0.0 to 300.00 mΩ
FORCE
AVERAGE 1 /
FORCE
AVERAGE 2 /
FORCE PEAK
Set upper and lower limits in the
following ranges according to the
FORCE UNIT and FORCE SENSOR
settings in the SETUP (1) screen:
MA-520:
0.00 to 99.99N / 0.00 to 99.99kg / 0.00 to
99.99lbf
MA-521:
0.0 to 999.9N / 0.0 to 999.9kg / 0.0 to
999.9lbf
MA-522, MA-710A, MA-711A,
MA-770A, MA-771A:
0 to 9999N / 0 to 9999kg / 0 to 9999lbf
When rated setting (MANUAL SET) is
selected for FORCE SENSOR, set upper
and lower limits in the following ranges
according to the Force Decimal (FORCE
DECIMAL) Point setting:
**.**:
0.00 to 99.99N / 0.00 to 99.99kg / 0.00 to
99.99lbf
***.*:
0.0 to 999.9N / 0.0 to 999.9kg / 0.0 to
999.9lbf
****:
0 to 9999N / 0 to 9999kg / 0 to 9999lbf
M-EXT /
P-EXT
Set upper and lower limits in the
following ranges according to the
External Decimal Point (EXT DECIMAL)
setting in the STATUS (1) screen:
*.**: 0.00 to 9.99
**.*: 0.0 to 99.9
***: 0 to 999
DISTANCE
Set upper and lower limits in the following
ranges according to the Displacement
Step (DIST RESOLUTION) and
Displacement Unit (DIST UNIT) settings
in the STATUS (2) screen:
• When a sensor with 1μm resolution or
less is used
-30.000 to +30.000 mm /
-1.1811 to +1.1811 inch
• When a sensor with 1.1μm resolution
or more is used
-300.00 to 300.00 mm /
-11.811 to 11.811 inch
PREV
Pressing operation button B displays the
SETUP (2) screen.
8. Operation Screens
8-36
MM-370B
n. PRINT Screen
(1)
(2)
No.
(1)
Item
Parameter
setting
Description
PRINT
MODE
Select an item to print from the following:
OFF
Setting
WAVEFO
RM
HISTORY
HISTORY
OUT OF
(Continue LIM
d to next
page)
8. Operation Screens
8-37
No printing
Prints the measured values of
five items selected in the VIEW
screen.
Prints after the end of
measurement or when the print
button (button B) is pressed.
(Print timing changes depending
on the Print Interval and Error
Print conditions.)
Prints the waveforms of four
items selected in the VIEW
screen.
The vertical and horizontal
scales applied to the printed
waveforms are those set in the
WAVEFORM screen.
You can select the waveforms to
print with waveform ON/OFF in
the VIEW screen.
Prints after the end of
measurement or when the print
button (button B) is pressed.
(Print timing changes depending
on the Print Interval and Error
Print conditions.)
Prints measured value history.
To print, first select this item,
then press the print button
(button B).
Prints measured value history
with Upper limit error, Lower
limit error, Overrange error,
Impulse error, or Parity error. To
print, first select this item and
press the print button (button B).
MM-370B
No.
(1)
Item
Parameter
setting
Description
PRINT
MODE
(Continue
d from
previous
page)
PRINT
INTERVAL
PRINT
OUT OF
LIM
SCHDUL
E AREA
(2)
Function keys
FEED
Prints schedule data whose
range is set in Schedule Data
Range (SCHEDULE AREA). To
print, first select this item,
then press the print button
(button B).
Prints screen image prior to
DISPLAY
print screen. To print, first
select this item, then press
the print button (button B).
Prints current all cycles. Prints
CURR ALL
after the end of measurement
CYCLE
or when the print button
(button B) is pressed. (Print
timing changes depending on
the Print Interval and Error
Print conditions.)
Prints
force all cycles. Prints
FORCE ALL
after
the
end of measurement
CYCLE
or when the print button
(button B) is pressed. (Print
timing changes depending on
the Print Interval and Error
Print conditions.)
You can set a print interval (1 to 999). Prints
irrespective of a print interval in the event of
Upper limit error, Lower limit error, Overrange
error, Impulse error, or Parity error.
The setting of print interval is valid only when
Setting, WAVEFORM, CURR ALL CYCLE, or
FORCE ALL CYCLE is selected for PRINT
MODE. When PRINT OUT OF LIM is set to
ON, a print interval does not work.
Select ON/OFF to specify whether to print
only in the event of Upper limit error, Lower
limit error, Overrange error, Impulse error, or
Parity error.
ON: Prints in the event of an error.
OFF: Prints irrespective of errors.
Prints at intervals set for PRINT INTERVAL
when normal. Prints at the time of an error
occurrence when abnormal.
The setting of error print is valid only when
Setting, WAVEFORM, CURR ALL CYCLE, or
FORCE ALL CYCLE is selected for PRINT
MODE.
SCHEDULE
Set the range of schedule numbers to print
schedule data from 001 to 127. The setting of
schedule data range is valid only when
schedule data is printed.
Pressing operation button A feeds paper.
8. Operation Screens
8-38
MM-370B
No.
(2)
Item
Function keys
Description
PRINT
Pressing operation button B prints the item
selected with the print setting. To pause
printing, press the encoder long. The printer
has a data storage space. Printing will stop
after the data is all output from the printer.
BACK
Pressing operation button E returns the
display to the previous screen.
Print example of COPY
Print example of SCHEDULE
Print example of HISTORY
Print example of HISTORY
8. Operation Screens
8-39
MM-370B
o. COMMUNICATION Screen
(1)
(2)
(3)
No.
Item
Description
(1)
Communicating display
Indicates the communication is underway. While this mark is
displayed, measurement or screen operation can not be
done.
This mark will be displayed on the screen other than the
COMMUNICATION screen.
(2)
Parameter
setting
COMM MODE
Specify unidirectional or bidirectional
communication system.
COMM TYPE
Select whether to use RS-232C or RS-485
for communication.
ID NUMBER
Set an instrument number (1 to 30).
COMM
SPEED
Select from 9,600 bps; 19,200 bps and
38,400 bps.
COMM
OUTPUT
Select an item to output from the following:
(Refer to Chapter 12 "Data
Communication" for details of
communication telegram.)
OFF
No communication
MEASURE
MENT
Outputs the measured values
of five items selected in the
VIEW screen. Outputs after
the end of measurement or
when the communication
button (button B) is pressed.
(Continued to
next page)
8. Operation Screens
8-40
MM-370B
No.
(2)
Item
Parameter
setting
Description
COMM
OUTPUT
(Continued
from previous
page)
WAVEFO
RM
Outputs the waveforms of
four items selected in the
VIEW screen. You can set
waveform decimation for
output interval of the
waveform sample value. Note
that if you set an interval
smaller than the data
sampling interval stored in the
instrument, the data will be
output at the internally stored
interval. You can select the
waveforms to output with
waveform ON/OFF in the
VIEW screen. Outputs after
the end of measurement or
when the communication
button (button B) is pressed.
HISTORY
Outputs measured value
history. To output, first select
this item, then press the print
button (button B).
HISTORY
OUT OF
LIM
Outputs measured value
history with Upper limit error,
Lower limit error, Overrange
error, Impulse error, or Parity
error. To output, first select
this item, then press the print
button (button B).
CURR
ALL
CYCLE
Outputs current all cycles.
Outputs after the end of
measurement or when the
communication button (button
B) is pressed.
FORCE
ALL
CYCLE
Outputs force all cycles.
Outputs after the end of
measurement or when the
communication button (button
B) is pressed.
WAVEFORM
RES
Set a waveform decimation.
You can select from among 0.2 ms, 0.5
ms, 1 ms, 2 ms, 5 ms and 10 ms.
If you set a decimation smaller than the
data sampling interval stored in the
instrument, the data will be output at the
internally stored interval. The setting of
waveform decimation is valid only when
WAVEFORM is selected for COMM
OUTPUT.
UNIT
Select whether to add an unit to the
communication data or not.
OFF: Not added
ON: Added
8. Operation Screens
8-41
MM-370B
No.
(3)
Item
Description
Function keys
USB
Pressing operation button A displays the
USB screen.
COMM
Pressing operation button B prints the item
selected with the communication setting.
To pause communicating, press the
encoder long.
BACK
Pressing operation button E returns the
display to the previous screen.
8. Operation Screens
8-42
MM-370B
p. USB Screen
(1)
(2)
(3)
No.
Item
Description
(1)
USB
memory
operating
display
Indicates the USB memory is operating. While this mark is
displayed, measurement or screen operation can not be done.
Do not remove the USB memory or turn off the power while the
mark is displayed and for 30 seconds after the mark
disappears.
This mark will be displayed on the screen other than the USB
screen.
(2)
Parameter
setting
USB TYPE
Select the data to read from or write in the USB
memory from the following:
TEST
Displays the amount of space in
the USB memory and the
number of data stored in the
instrument.
WAVEFORM
Writes the waveforms of four
items selected in the VIEW
screen in the USB memory.
HISTORY
Writes the measurement values
of five items selected in the
VIEW screen in the USB
memory.
CURR ALL
(Continued CYCLE
to next
FORCE ALL
page)
CYCLE
8. Operation Screens
8-43
Writes current all cycles in the
USB memory.
Writes force all cycles in the USB
memory.
MM-370B
No.
(3)
Item
Function
keys
Description
USB TYPE
(Continued
from
previous
page)
SCHEDULE
Writes/Reads the schedule data
in/from the USB memory.
At writing, all the information of
schedules 0 to 127 is written.
At reading, only the selected
schedule is read.
000-127: All the information
000-000: System information
only
nnn-nnn: Only specified
schedule (1 schedule)
COPY
DISPLAY
Writes the screen copy in the
USB memory.
FILE
NUMBER
Set the file number (0 to 9) to read from or write
in the schedule data.
SCHEDUL
E AREA
Set the range of schedule to read the schedule
data (000 to 127).
READ
Pressing operation button A performs reading
from the USB memory.
Valid only when TEST or SCHEDULE is selected
for USB TYPE.
WRITE
Pressing operation button B performs writing in
the USB memory.
Valid only when WAVEFORM, HISTORY, CURR
ALL CYCLE, FORCE ALL CYCLE, SCHEDULE,
or COPY DISPLAY is selected for USB TYPE.
DELETE
Pressing operation button D deletes the
measured value log data stored in the
instrument.
BACK
Pressing operation button E displays the
COMMUNICATION screen.
8. Operation Screens
8-44
MM-370B
The following folders are automatically created in the USB memory.
Folder name
Description
¥MIYACHI
The following four folders are created.
¥MIYACHI¥LOG
The measured value log is created.
The filenames are “LOG00000.CSV” to “LOG00999.CSV”.
After 999, the filename returns to 000. The file is overwritten.
A thousand of measure value are written in a file.
1000 x 1000 = 1 million data can be saved (if not full).
When the USB memory is connected, the measured value is
automatically saved. After about 1,000 data are saved in the
instrument, they are written in the USB memory.
¥MIYACHI¥BMP
The screen copy file is created.
The filenames are “BMP00000.BMP” to “BMP00099.BMP”.
After 99, the filename returns to 00. The file is overwritten.
¥MIYACHI¥DAT
The various data is created.
The filenames are “DAT00000.CSV” to “DAT00099.CSV”.
After 99, the filename returns to 00. The file is overwritten.
¥MIYACHI¥SCH
The schedule data is created.
The filenames are “SCH00000.CSV” to “SCH00009.CSV”.
About the USB memory
We recommend the following USB memories.
• The RUF series manufactured by BUFFALO INC.
• The TB-ST series manufactured by I-O DATA DEVICE, INC.
Note that USB memories other than above may not work on the MM-370B.
CAUTION
• Do not remove the USB memory or turn off the power while the USB
memory mark is displayed and for 30 seconds after the mark disappears.
Otherwise, the data may be damaged.
• The USB memory is a static-sensitive device. When the USB memory is
plugged, regularly execute TEST to check the connection status. When
an error occurs, turn on the power of the MM-370B again.
8. Operation Screens
8-45
MM-370B
q. HISTORY Screen
(1)
Can be switched
between SAVE
(2)
No.
(1)
Item
Description
The HISTORY screen shows a list of measured values
(presence/absence of waveforms, date, time, schedule
No.) obtained until now.
This screen allows you to load past measured values and
save new ones to the built-in flash memory.
“~” on the left side of the screen indicates the save state of
waveforms and all cycles. When you load the history of the
item with “~”, waveforms and all cycles can be displayed
on the WAVEFORM screen and the ALL CYCLE screen.
You can save measured values both to the built-in
memory and flash memory.
• Amount of history data storable in the built-in memory
The built-in memory is battery-backed-up RAM. It can
store measured values (5 selected measured values),
all cycles and waveforms (4 selected waveforms).
Refer to the following for the amount of storable data:
• When you have selected WAVE MEMORY for SAVE
SELECT in the STATUS (3) screen, the MM-370B
is in mode to save measured values, all cycles and
waveforms.
Measured value data (5 selected measured values):
100
Older data is deleted as the number of measured
values exceeds 100.
All cycles and waveform data (4 selected
waveforms): 20
(The number of storable pieces of data varies
depending on the waveform measurement time.)
Older data is deleted as the number of pieces of data
exceeds 20 or as the maximum measurement time is
surpassed.
• When you have selected MEAS. MEMORY for SAVE
SELECT in the STATUS (3) screen, the MM-370B
is in mode to save measured values.
Measured value data (5 selected measured values):
3,000
Older data is deleted as the number of measured
values exceeds 3,000.
All cycles and waveform data (4 selected
waveforms): 1
(Continued to
The final data remains stored.
next page)
History display
8. Operation Screens
8-46
MM-370B
No.
Item
Description
(1)
History display
(Continued
from previous
page)
(2)
Function keys
• Amount of history data savable in the built-in flash
memory
The built-in flash memory is flash ROM.
It can store measured values (5 selected measured
values), all cycles and waveforms (4 selected
waveforms).
Fifty sets of measured values, all cycles and
waveforms can be saved.
The built-in flash memory has a write limit. An error
message (system error) appears if the write limit is
exceeded. The write limit is 100,000.
Pressing operation button A displays the
DATA
DATA READ screen. Allows you to load
the measured values stored in the built-in
flash memory.
Pressing
operation button B switches
CHANGE
between measured values of five
measurement items. You can switch the
display to show five measurement items by
turning the encoder clockwise or
counterclockwise.
Pressing operation button C and turning
SCROLL
the encoder clockwise or counterclockwise
scrolls the screen down or up.
Pressing operation button D makes it
SELECT
possible to select measured values,
showing the cursor that encloses the
on-screen history line by line. You can
move the cursor by turning the encoder
clockwise or counterclockwise.
To save measured values, all cycles and
waveforms to the flash memory built into
the MM-370B, move the cursor to a
desired measured value and press
operation button E (SAVE). At this time,
SELECT does not scroll the screen.
Therefore, scroll the screen first, and then
make a selection.
Pressing operation button D again makes it
possible to select measured values, thus
allowing you to load stored measured
values, all cycles and waveforms and view
past measured values in the Measurement,
WAVEFORM and ALL CYCLE screens.
When measured value selection is made
SAVE/
possible by operation button D, SAVE
AL DEL
appears. In this condition, move the cursor
to a desired measured value using the
encoder and press operation button E. This
saves the selected measured value to the
flash memory built into the MM-370B.
If no measured value is selected, Al DEL
appears. In this condition, press operation
button E. This displays DELETE in
operation button D, and CANCEL in
operation button E.
Selecting DELETE clears all history data
from the built-in flash memory; selecting
CANCEL leaves the data unclear.
8. Operation Screens
8-47
MM-370B
r. DATA READ Screen
(1)
Can be switched
between READ
(2)
No.
Item
Description
(1)
Loaded data
display
Shows the list of measured values stored in the built-in
flash memory.
This screen allows you to load the measured values stored
in the built-in flash memory.
“~” on the left side of the screen indicates the save state of
waveforms and all cycles. When “~” is displayed,
waveforms and all cycles have been stored.
(2)
Function keys
HISTORY
Pressing operation button A displays the
HISTORY screen.
SCROLL
Pressing operation button C and turning
the encoder clockwise or counterclockwise
scrolls the screen down or up.
Pressing operation button D makes it
possible to select data, showing the cursor
that encloses the on-screen history line by
line. You can move the cursor by turning
the encoder clockwise or counterclockwise.
To load measured values, all cycles and
waveforms from the flash memory built into
the MM-370B, move the cursor to a
desired measured value and press
operation button E (READ). At this time,
SELECT does not scroll the screen.
Therefore, scroll the screen first, and then
make a selection.
Pressing operation button D again cancels
SELECT.
SELECT
(Continued to
next page)
8. Operation Screens
8-48
MM-370B
No.
(2)
Item
Description
Function keys
(Continued
from previous
page)
READ/
AL DEL
When data selection is made possible by
operation button D, READ appears. In this
condition, select desired data using the
encoder and press operation button E. This
loads the selected data from flash memory.
Note that this operation will clear the
history data.
If no measured value is selected, AL DEL
appears. In this condition, press operation
button E. This displays DELETE in
operation button D, and CANCEL in
operation button E.
Selecting DELETE clears all measured
values from the built-in flash memory;
selecting CANCEL leaves the measured
values unclear.
8. Operation Screens
8-49
MM-370B
s. STATUS (1) Screen
Can be switched between
External Trigger Level
Displayed only
when FORCE is
(1)
selected
Displayed only when
rated setting is
selected. Can be
switched between
External Rating and
External Decimal
Point.
Displayed only
when FORCE
is selected
(2)
No.
(1)
Item
Description
Parameter
setting
COIL TYPE
Set as follows depending on the type of
toroidal coil connected:
When 1x sensitivity coil is used: 1
When 10x sensitivity coil is used: 10
CURR
TRIGGER
The sensitivity increases as you increase
the value. Excessively increasing the
sensitivity may cause malfunction. If set to
around 99, the current trigger may not be
complete. At the time, decrease the value.
SELECT
MEAS
To measure force*1, select FORCE. To
measure external input voltage*1, select
EXTERNAL.
FORCE
TRIGGER
LEVEL*1/
EXT
TRIGGER
LEVEL
Set a triggering level as the percentage of
full scale.
A force is measured while it exceeds the
trigger level. The waveform is displayed
from 200ms max. before start of trigger to
50ms after completion of trigger.
A
○
Waveform display before start of trigger
Specifies the start position in the range of
200ms before start of trigger to display.
B
○
Waveform display after completion of trigger
Displays for 50ms after had been lower trigger.
When you have selected FORCE for
SELECT MEAS, select a force trigger level
(2.0 to 99.9%).
When you have selected EXTERNAL for
SELECT MEAS, select an external trigger
level (2.0 to 99.9%).
(Continued to
next page)
8. Operation Screens
8-50
MM-370B
No.
(1)
Item
Description
Parameter
setting
(Continued
from previous
page)
FORCE
UNIT*1
When you have selected FORCE for
SELECT MEAS, select the force unit used
for settings and display related to force
from N, kgf, and lbf.
FORCE
SENSOR*1
When you have selected FORCE for
SELECT MEAS, select the connected
force sensor from the following:
MA-520, MA-521, MA-522,
MA-710A, MA-711A, MA-770A,
MA-771A, MANUAL SET
FORCE
MAX*1/
EXT MAX
When you have selected rated setting
(RTD) for FORCE SENSOR, set a force or
external rating as follows:
<When FORCE is selected for SELECT
MEAS>
• FORCE UNIT: N
Force rating: 490 to 9806
• FORCE UNIT: kgf
Force rating: 50 to 1000
• FORCE UNIT: lbf
Force rating: 110 to 2205
<When EXTERNAL is selected for
SELECT MEAS>
Force rating: 100 to 999
FORCE
DECIMAL*1/
EXT
DECIMAL
When you have selected rated setting
(MANUAL SET) for FORCE SENSOR, set
a force or external decimal point as follows:
• <When FORCE is selected for SELECT
MEAS>
Force decimal point: **.**, ***.*, ****
• <When EXTERNAL is selected for
SELECT MEAS>
External decimal point: *.**, **.*, ***
FORCE
SPAN*1
When you have selected FORCE for
SELECT MEAS, select a force span (500
to 1,500). Corrects the sensor output.
The force input assumes 1mV/V of rated
output. Since the sensor have some
variation in accuracy, value and force span
to correct it are listed on the label on the
label of our force sensor and current/force
sensor. Set the value of force span on the
label to the FORCE SPAN. When you have
selected rated setting (MANUAL SET) for
FORCE SENSOR, set 1000 for FORCE
SPAN.
8. Operation Screens
8-51
MM-370B
No.
(2)
*1:
Item
Description
Function keys
NEXT
Pressing operation button A displays the
STATUS (2) screen.
I/O
Pressing operation button C displays the
I/O SET (1) screen.
TEST
Pressing operation button D displays the
I/O TEST screen.
BACK
Pressing operation button E returns the
display to the previous screen.
Force/displacement-equipped specification function.
8. Operation Screens
8-52
MM-370B
t. STATUS (2) Screen
(1)
(2)
No.
(1)
Item
Description
Parameter
setting
COUNT
LIMIT
The counter counts up by 1 for each
measurement. When the counter reaches
the preset counter value, the COUNT UP
signal is output. Set a preset value (0 to
999,999).
DATE
Set the date in the format: year (2000 to
2099), month (1 to 12) and day (1 to 31).
TIME
Set the time in the format: hour (0 to 23)
and minutes (0 to 59).
CONTRAST
Set a display contrast (1 to 10).
DIST OUT
RANGE*1
Select an analog output range for
displacement.
Setting
2 mm
10 mm
30 mm
DIST
RESOLUTION*1
(Continued to
next page)
Multiplying
factor
16x
4x
1x
Enter the displacement sensor resolution.
Set the value between 0.1 to 10.0 μm.
(Ex.) GS-1830, GS-1813,
LGK-110:
1.0 μm
ST1278:
0.5 μm
The measurement range changes
depending on the DIST RESOLUTION
setting. The measurement range of
displacement is ± (DIST RESOLUTION
setting x 30000) μm.
(Ex.) When the DIST RESOLUTION setting
is 1 μm
±(1 x 30000) μm = ±30000 μm = ±30
mm
8. Operation Screens
8-53
Output voltage &
displacement
± 2.047 mm (± 5 V)
± 8.191 mm (± 5 V)
± 32.767 mm (± 5 V)
MM-370B
No.
(1)
(2)
*1:
Item
Description
*1
Parameter
setting
(Continued
from previous
page)
DIST UNIT
Select mm or inch as the unit to measure
and display the displacement.
DIST
Set the displacement polarity.
NORMAL: Plus (+) in the direction of
retraction)
REVERSE: Minus (-) in the direction of
retraction)
Function keys
NEXT
Pressing operation button A displays the
STATUS (3) screen.
PREV
Pressing operation button B displays the
STATUS (1) screen.
Force/displacement-equipped specification function.
8. Operation Screens
8-54
MM-370B
u. STATUS (3) Screen
(1)
(2)
No.
(1)
Item
Description
Parameter
setting
LANGUAGE
SAVE
FORMAT
MEMORY
BATTERY
COUNT
(2)
Function keys
PREV
RESET
Select a language for on-screen display
from among Japanese, English, Chinese,
Korean, French, German and Spanish.
Set the save mode to the waveform or
measured value save mode.
• Waveform save mode (WAVE
MEMORY)
This mode saves the measured
values and waveforms.
The instrument stores the measured
values and OK/NG judgment results of
the five measurement items for up to
the last 100 points and the waveforms
of the four waveform display items.
Older data is deleted when the
measured values exceed 100 points.
Older waveform is deleted as the
number of pieces of data exceeds 20
or as the maximum measurement time
is surpassed. On the other hand, you
can check waveform data on the
screen display or printout.
• Measured value save mode
(MEAS. MEMORY)
Stores the measured values and
OK/NG judgment results of the five
measurement items for the latest
3,000 points.
Shows the backup battery voltage of the
MM-370B. Shows an error if the battery
power is low.
Shows the number of measurements.
Counts up irrespective of OK/NG
judgment against upper and lower limits.
Pressing operation button B displays the
STATUS (2) screen.
Pressing operation button C resets the
counter value.
8. Operation Screens
8-55
MM-370B
v. I/O SET (1) Screen
(1)
(2)
No.
(1)
Item
Description
Set up to three items for each of outputs 1 to 7 from the
following:
----: No setting
CURR-H: Current upper limit error
Output if the currents (peak and RMS) exceed the upper
limits.
CURR-L: Current lower limit error
Output if the currents (peak and RMS) fall below the lower
limits.
VOLT-H: Voltage upper limit error
Output if the voltages (peak and RMS) exceed the upper
limits.
VOLT-L: Voltage lower limit error
Output if the currents (peak and RMS) fall below the lower
limits.
TIME-H: Current flow time upper limit error
Output if the voltages exceed the upper limits.
(Continued to TIME-L: Current flow time lower limit error
Output if the currents fall below the lower limits.
next page)
OUTPUT 1–7
8. Operation Screens
8-56
MM-370B
No.
(1)
*1:
Item
Description
POWER-H: Power upper limit error
Output if the power exceeds the upper limit.
POWER-L: Voltage lower limit error
Output if the power falls below the lower limit.
RESIS-H: Resistance upper limit error
Output if the resistance exceeds the upper limit.
RESIS-L: Resistance lower limit error
Output if the resistance falls below the lower limit.
EXT-H: External ±10 V voltage input upper limit error
Output if the external ±10 V voltage inputs (peak and
RMS) exceed the upper limits.
EXT-L: External ±10 V voltage input lower limit error
Output if the external ±10 V voltage inputs (peak and
RMS) fall below the lower limits.
FORCE-H*1: Force upper limit error
Output if the forces (peak and RMS) exceed the upper
limits.
FORCE-L*1: Force lower limit error
Output if the forces (peak and RMS) fall below the lower
limits.
DIPSL-H*1: Displacement upper limit error
Output if the displacement exceeds the upper limit.
DIPSL-L*1: Displacement lower limit error
Output if the displacement falls below the lower limit.
NO CURR: Lack-of-current error
Output if lack of current occurs.
(The NO CURR signal input terminal on the external input
connector must be used.)
SCH NG: Lack-of- schedule-input error
Output if measurement is made with no external schedule
input
(The schedule signal input terminal on the external input
connector must be used.)
NG: Error
Output if an upper/lower limit, overrange, impulse,
lack-of-current, or parity error occurs.
TROUBLE: Trouble
Output if an instrument error (E**) occurs.
GOOD: Normal
Output when the measured value falls within the upper
and lower limits, with current flowing properly.
COUNT: Count up
Output if the counter exceeds the preset count.
(Continued to POWER: Power ON
next page) Output when the power is ON.
OUTPUT 1–7
(Continued
from previous
page)
Force/displacement-equipped specification function.
8. Operation Screens
8-57
MM-370B
No.
Item
Description
(1)
OUTPUT 1–7
(Continued
from previous
page)
READY: Ready
Output when the MM-370B is ready for measurement.
However, not output during measurement (including
calculation time) or HOLD ON.
(Ex.) To make current OK/NG judgment against upper
and lower limits, set the outputs as follows:
Output 1: CURR-L and CURR-H
Output 2: TIME-L and TIME-H
Output 3: GOOD
Output 4: NG
Output 5: TROUBLE
This provides you with an output from Output 3
when current flows properly, an output from Output
1 if the measured current falls outside the upper
and lower limits, an output from Output 2 if the
measured current flow time falls outside the upper
and lower limits, an output from Output 4 in the
event of an error such as overrange error, and an
output from Output 5 in the event of an error in the
MM-370B.
(2)
Function keys
NEXT
Pressing operation button A displays the
I/O SET (2) screen.
BACK
Pressing operation button E returns the
display to the previous screen.
8. Operation Screens
8-58
MM-370B
w. I/O SET (2) Screen
(1)
(2)
No.
(1)
Item
Description
OUTPUT
MODE
Parameter
setting
OUTPUT
DURATION
PARITY
INPUT
DEBOUNCE
TIME
FORCE/
DISPL
OUTPUT
(2)
Function keys
PREV
Set a mode for the output terminals.
NORMAL CLOSE: Open at output
NORMAL OPEN: Closed at output
This setting applies to the out put of
following items:
CURR-H, CURR-L, VOLT-H, VOLT-L,
TIME-H, TIME-L, POWER-H, POWER-L,
RESIS-H, RESIS-L, EXT-H, EXT-L,
FORCE-H, FORCE-L, DISPL-H, DISPL-L,
NO CURR, SCH NG, NG and TROUBLE.
Select an output time.
10ms: Output time of 10 ms
100ms: Output time of 10 ms
HOLD: Holds output and cancels output
at the start of next measurement, the start
of no-current check, or in the event of an
error reset.
This setting applies to the out put of
following items:
CURR-H, CURR-L, VOLT-H, VOLT-L,
TIME-H, TIME-L, POWER-H, POWER-L,
RESIS-H, RESIS-L, EXT-H, EXT-L,
FORCE-H, FORCE-L, DISPL-H, DISPL-L,
NO CURR, SCH NG, NG, TROUBLE,
GOOD and COUNT.
Select whether to use parity terminals.
When you select ON, be sure that the total
number of schedule selection and parity
terminals that are closed is odd.
Set a delay time from the signal input to
when the signal settles down.
This setting makes it possible to eliminate
input signal chatter.
Select the output method of
force/displacement level signal.
PULSE: Pulse output
LEVEL: Level output
Pressing operation button E returns the
display to the previous screen.
8. Operation Screens
8-59
MM-370B
x. I/O TEST Screen
(1)
(2)
No.
Item
Description
(1)
I/O status
Input signals are shown red when ON, and gray when
OFF. The ON signal is output when “1” is input, and the
OFF signal when “0” is input.
(2)
Function keys
BACK
Pressing operation button E returns the
display to the previous screen.
8. Operation Screens
8-60
MM-370B
9. Measurement
(1) Measuring Current (Current Flow Time)/Voltage
1) Connect the MM-370B to a power supply, and plug the toroidal coil and the
power detection cord to the MM-370B. (For more information, refer to (1) and (2)
a in Chapter 6.)
2) Start the MM-370B. (For more information, refer to (1) in Chapter 7.)
3) Press the HOLD button.
MENU button
HOLD button
The MM-370B enters hold mode, allowing you to manipulate the screens.
4) Press the MENU button.
The menu list appears.
5) Using the encoder, select SETUP from the menu list.
Select SETUP.
The SETUP (1) screen appears.
9. Measurement
9-1
MM-370B
6) Select CURRENT for TRIGGER in the SETUP (1) screen, and select an arbitrary
mode selectable for that trigger. (For more information, refer to (2) j in Chapter 8.)
TRIGGER: CURRENT or AUTO
MODE: arbitrary
7) Set up the MM-370B as follows according to the type of welding power supply
used:
Single-phase AC welding power supply
(1) Set the following items in the SETUP (1) screen. (For more information, refer
to (2) j in Chapter 8.)
Item
Setting
Current
AC
Time
CYC-50/60 Hz
Start Cycle
(S-CYCLE)/
End Cycle
(E-CYCLE)
Referring to the figure shown below, set the
current calculation interval.
AC inverter welding power supply
(1) Set the following items in the SETUP (1) screen. (For more information, refer
to (2) j in Chapter 8.)
Item
Setting
Current
AC
Time
When making measurement by setting a frequency:
CYC-***Hz
When measuring current flow time in units of ms:
ms
9. Measurement
9-2
MM-370B
Item
Setting
Start Cycle
(S-CYCLE)/
End Cycle
(E-CYCLE)
Referring to the figure shown below, set the current
calculation interval.
Frequency
Set the frequency of the current to be measured.
When using a Miyachi AC inverter welding power
supply, set the frequency referring to the table shown
below (Correlation between Frequencies of the
Welding Power Supply and the MM-370B).
Correlation between Frequencies of the Welding
Power Supply and the MM-370B
Welding power
supply
frequency
setting
MM-370B
frequency
setting
Welding power
supply
frequency
setting
MM-370B
frequency
setting
50 Hz
M050
91 Hz
M091
53 Hz
M053
100 Hz
M100
56 Hz
M056
111 Hz
M111
59 Hz
M059
125 Hz
M125
63 Hz
M063
143 Hz
M143
67 Hz
M067
167 Hz
M167
71 Hz
M071
200 Hz
M200
77 Hz
M077
250 Hz
M250
83 Hz
M083
AC inverter welding power supply
(1) Set the following items in the SETUP (1) screen.
(For more information, refer to (2) j in Chapter 8.)
Item
Setting
Current
DC
time
When making measurement in units of cycle:
CYC-50/60Hz
When measuring current flow time in units of ms:
ms
Start Cycle
Referring to the figure shown below, set the
current calculation interval.
9. Measurement
9-3
MM-370B
Item
Setting
(S-CYCLE)/
End Cycle
(E-CYCLE)
If you set the current calculation interval by
setting the CURR FALL LEVEL in the SETUP (2)
screen, set the E-CYCLE to “0.”*1
*1:
You can set the current calculation end time also by CURR FALL
LEVEL (an item that sets the percentage relative to the current peak
to stop the calculation) in the SETUP (2) screen.
To set the CURR FALL LEVEL, proceed with Steps (2) and (3).
(2) Press operation button A.
Operation
button A
A
B
C
D
E
The SETUP (2) screen appears.
(3) Set the following items in the SETUP (1) screen.
(For more information, refer to (2) k in Chapter 8.)
9. Measurement
9-4
MM-370B
Transistor welding power supply
(1) Set the following items in the SETUP (1) screen. (For more information, refer
to (2) j in Chapter 8.)
Item
Setting
Current
DC
Time
ms-SHORT
Start Cycle
(S-CYCLE)/
End Cycle
(E-CYCLE)
Set a calculation interval.
8) Press the MENU button, and using the encoder, select MEASURE from the menu
list.
Select MEASURE.
The MEASUREMENT screen appears.
9) Press operation button E.
A
B
C
D
The VIEW screen appears.
9. Measurement
9-5
E
Operation button E
MM-370B
10)
According to the desired measurement item, set the following in one of Measure 1
to 5:
(For information on measurement items other than the below, refer to (2) b in
Chapter 8.)
To measure RMS current:
CURR (RMS)
To measure peak current during current flow:
CURR (PEAK)
To measure RMS voltage:
VOLT (RMS)
To measure peak voltage during current flow:
VOLT (PEAK)
To measure current flow time:
CURR TIME
To measure maximum conduction angle during current flow time:
COND ANGLE
11)
To display the waveforms of the measured items, set those items in Waveforms 1
to 4. (For more information, refer to (2) b in Chapter 8.)
12)
As necessary, switch to the SETUP and STATUS screens and set other items.
(For more information, refer to (2) j, k, l, m, r, s and t in Chapter 8.)
13)
Press the HOLD button.
The hold mode is canceled, putting the MM-370B into wait state until
measurement starts (the signal selected as trigger is input).
14)
When the trigger signal is input to the MM-370B, measurement starts. Confirm
the measurement results on the MEASUREMENT and WAVEFORM screens. You
can also print measured values and waveforms from the PRINT screen, as
necessary. (For more information, refer to (1) and (2) in Chapter 8.)
9. Measurement
9-6
MM-370B
(2) Measuring Displacement (Force/displacement-equipped
specification function)
1) Connect the MM-370B to a power supply, and plug the displacement sensor to
the MM-370B. (For more information, refer to (1) and (2) b in Chapter 6.)
2) Start the MM-370B. (For more information, refer to (1) in Chapter 7.)
3) Press the HOLD button.
MENU button
HOLD button
The MM-370B enters hold mode, allowing you to manipulate the screens.
4) Press the MENU button.
The menu list appears.
5) Using the encoder, select SETUP from the menu list.
Select SETUP.
The SETUP (1) screen appears.
9. Measurement
9-7
MM-370B
6) Select CURRENT for TRIGGER, and NORMAL for MODE in the SETUP (1)
screen. (For more information, refer to (2) j in Chapter 8.)
TRIGGER: CURRENT
MODE: NORMAL
Operation
button A
A
B
C
D
E
7) Press operation button A.
The SETUP (2) screen appears.
8) Press operation button A again.
The SETUP (3) screen appears.
9) Set the following items in the SETUP (3) screen.
(For more information, refer to (2) l in Chapter 8.)
Item
10)
Setting
Displacement delay time
(DISP DELAY TIME)
0 to 999 ms
Displacement level
(DISP LEVEL) 1
Displacement level
(DISP LEVEL) 2
• When a sensor with 1 μm resolution or less is
used
Displacement level 1: -30.000 mm
Displacement level 2: +30.000 mm
• When a sensor with 1.1 μm resolution or more
is used
Displacement level 1: -300.00 mm
Displacement level 2: +300.00 mm
Press the MENU button, and using the encoder, select MEASURE from the menu
list.
Select MEASURE.
The MEASUREMENT screen appears.
9. Measurement
9-8
MM-370B
11)
Press operation button E.
A
B
C
D
E
Operation button E
The VIEW screen appears.
12)
According to the desired measurement item, set the following in one of Measure 1
to 5:
(For information on measurement items other than the below, refer to (2) b in
Chapter 8.)
To measure the displacement:
To measure real-time displacement:
Displacement (DISP)
C-DISP
13)
To display the waveforms of the measured items, set those items in Waveforms 1
to 4. (For more information, refer to (2) b in Chapter 8.)
14)
As necessary, switch to the SETUP and STATUS screens and set other items.
(For more information, refer to (2) j, k, l, m, r, s and t in Chapter 8.)
15)
Press the HOLD button.
The hold mode is canceled, putting the MM-370B into wait state until
measurement starts (the signal selected as trigger is input).
16)
When the trigger signal is input to the MM-370B, measurement starts. Confirm
the measurement results on the MEASUREMENT and WAVEFORM screens. You
can also print measured values and waveforms from the PRINT screen, as
necessary. (For more information, refer to (1) and (2) in Chapter 8.)
9. Measurement
9-9
MM-370B
(3) Measuring Force (Force/displacement-equipped specification
function)
CAUTION
• Before using the force sensor, be sure to turn off the power of the welding
machine and confirm that no welding current is flowing.
• Select an appropriate force sensor according to the force range you wish
to measure.
• Before measuring force, be sure to set the force sensor’s offset to “0.”
You can set the offset to “0” by pressing the HOLD button to cancel the
HOLD mode. At this time make sure that no force is applied to the sensor.
1) Connect the MM-370B to a power supply, and plug the force or current/force
sensor to the MM-370B. If you wish to measure the current and voltage as well
as the force at the same time, plug the current/force sensor. (For more information,
refer to (1) and (2) in Chapter 6.)
2) Start the MM-370B. (For more information, refer to (1) in Chapter 7.)
3) Press the HOLD button.
MENU button
HOLD button
The MM-370B enters hold mode, allowing you to manipulate the screens.
4) Press the MENU button.
The menu list appears.
5) Using the encoder, select STATUS from the menu list.
9. Measurement
9-10
MM-370B
Select STATUS.
The STATUS (1) screen appears.
6) Set the following items in the STATUS (1) screen.
(For more information, refer to (2) r in Chapter 8.)
Item
Setting
Measurement Selection
(SELECT MEAS)
Force
Force Trigger Level
(FORCE TRIGGER LVL)
2.0 to 99.9%
FORCE UNIT
N, kgf, lbf
FORCE SENSOR
Select the force sensor connected.
7) Press the MENU button.
The menu list appears.
8) Using the encoder, select SETUP from the menu list.
Select SETUP.
The SETUP (1) screen appears.
9) Select FORCE or AUTO for TRIGGER in the SETUP (1) screen, and select an
arbitrary mode selectable for that trigger. (For more information, refer to (2) j in
Chapter 8.)
TRIGGER: FORCE or AUTO
MODE: arbitrary
Operation
button A
A
B
C
D
9. Measurement
9-11
E
MM-370B
10)
Press operation button A twice.
The SETUP (3) screen appears.
11)
Set the following items in the SETUP (3) screen.
Item
Setting
FORCE START TIME 1
to 2
FORCE END TIME 1 to 2
12)
Referring to the figure shown below, set a force
calculation interval by the FORCE START TIME
and FORCE END TIME.
Press the MENU button, and using the encoder, select MEASURE from the menu
list.
Select MEASURE.
The MEASUREMENT screen appears.
13)
Press operation button E.
A
B
C
D
E
Operation button E
The VIEW screen appears.
14)
According to the desired measurement item, set the following in one of Measure 1
to 5: (For information on measurement items other than the below, refer to (2) b in
Chapter 8.)
To measure mean force:
To measure peak force:
To measure the time from when the force signal
9. Measurement
9-12
Mean Force (M-FORCE) 1,
Mean Force (M-FORCE) 2
Peak Force (P-FORCE)
MM-370B
exceeds the force start level to when the
signal falls below the force end level:
FORCE TIME
15)
To display the waveforms of the measured items, set those items in Waveforms 1
to 4. (For more information, refer to (2) b in Chapter 8.)
16)
As necessary, switch to the SETUP and STATUS screens and set other items.
(For more information, refer to (2) j, k, l, m, r, s and t in Chapter 8.)
17)
Press the HOLD button.
The hold mode is canceled, putting the MM-370B into wait state until
measurement starts (the signal selected as trigger is input).
18)
When the trigger signal is input to the MM-370B, measurement starts. Confirm
the measurement results on the MEASUREMENT and WAVEFORM screens. You
can also print measured values and waveforms from the PRINT screen, as
necessary. (For more information, refer to (1) and (2) in Chapter 8.)
9. Measurement
9-13
MM-370B
10. Interface
This chapter explains about the pins of the I/O connectors.
Input signals are described as contact inputs.
(1) Connection Diagram of the External I/O Signals
a. Input Connector
(Using contacts or open-collector (sink-type) PLC sequencer as input signals)
10. Interface
10-1
MM-370B
b. Input Connector
(Using voltage-output (source-type) PLC sequencer as input signals)
10. Interface
10-2
MM-370B
c. Output Connector
10. Interface
10-3
MM-370B
d. Optional Connector (Force/displacement-equipped specification only)
(2) Description of the External I/O Signals
a. Input Connector (D-Sub, 25-pin)
Pin No.
Name
1
EXT.24
2
EXT.COM
Function
Pins 1 and 2 are EXT.24V and EXT.COM pins.
Connect them as follows depending on the usage:
When using contacts or open-collector (sink-type) PLC
(Programmable Logic Controller) as input signals to the
I/O connectors, connect pins 1 and 2.
When using a voltage-output (source type) PLC
(Programmable Logic Controller) as input signals to the
I/O connectors, connect pin 2 to the COM terminal of the
PLC.
Caution: Do not use Pin 1 other than for connecting to
Pin 2 (external input signal).
10. Interface
10-4
MM-370B
Pin No.
Name
3
4
5
6
7
8
9
SCH1
SCH2
SCH4
SCH8
SCH16
SCH32
SCH64
10
P
11
12
COM
NO CURR
13
NO CURR
25
AC/DC24V
14
PRG PRT
15
MEAS STP
16
CNT RST
17
ERR RST
18
OPTION
19
DIST TRG
20 to 24
-
Function
Select the schedule No. by the binary combination of
closed pin numbers among pins 3 to 9.
The schedule No. selected by the I/O connectors has
precedence over that selected on screen. If you wish to
select the schedule No. through on-screen manipulation,
leave all pins 3 to 9 open.
Input the SCH signal at least 2ms prior to the flow of
welding current. You cannot change schedule No. during
measurement operation.
Parity terminal. It can be selectively enabled or disabled.
To use it in enabled mode, be sure that the number of
signal lines to turn ON is always odd when selecting the
schedule No. by pins 3 to 9.
COM terminal for input signals.
Input terminal for the NO CURR signal.
Be sure that it closes at least 10ms prior to the flow of
welding current and opens after the flow of welding
current.
If no welding current flows while this pin is closed, a
lack-of-current error occurs when the pin opens. (Lack of
current can also be detected using pins 13 and 25.)
These pins are used to detect lack of current using
voltage.
Input 24V AC or DC voltage at least 10 ms prior to the
flow of welding current, and stop the input after the
current flow.
If no welding current flows while this terminal is supplied
with voltage, a lack of current error is displayed when the
voltage input stops.
Schedule input inhibition terminal.
When this terminal is closed, schedule setting input from
the panel is rejected.
Measurement halt terminal.
The instrument does not perform any measurement while
this terminal is closed.
If the terminal closes during current flow, the data during
that period is ignored.
Counter reset terminal.
Closing this terminal resets the counter to 0.
Error reset terminal.
Closing this terminal cancels error display and error
output.
Optional input.
Unused.
Used to start displacement measurement from external
equipment. (Force/displacement-equipped specification
function)
Unused.
10. Interface
10-5
MM-370B
b. Output Connector (D-Sub, 15-pin)
Pin No.
Name
Function
1
OUT COM
COM terminal for outputs.
2 to 8
OUT1 to
OUT7
9, 15
COM
Contact output terminals. (Semiconductor relay. Capacity:
24V AC/DC, 20 mA)
The contacts close according to the function.
Refer to Chapter 8, “(2) u, v” for operations in the operation
screens.
Connected to the chassis.
10
CURR SIG
Analog current signal terminal (2V/range)
11
VOLT SIG
Analog voltage signal terminal (2V/range)
12
TRG SIG
13
SIG GND
Analog current trigger signal terminal (5V)
Goes to 5 V if a current flows
COM terminal for analog signals.
14
-
Unused.
10. Interface
10-6
MM-370B
c. Optional Connector (D-Sub, 15-pin) (Force/displacement-equipped specification
function)
Pin No.
Name
Function
1
FORCE SIG
Analog force signal terminal (5V/sensor rating)
2
DIST SIG
3
SIG GND
Analog displacement signal terminal (5V/2mm, 5V/8mm,
5V/32mm)
COM terminal for analog signals.
4
-
8
-
14
-
15
-
5
EXT TRG1
6
EXT TRG2
7
TRG COM
Force external trigger signal input terminal.
Connect a force signal (solenoid valve signal) to measure
the force and current timings. Supply a 24V DC voltage
input signal. For more information, refer to the description
of the WAVEFORM (FORCE) screen.
Optional input.
Unused.
COM terminal for trigger input.
9
LEV COM
COM terminal for level output.
10
FORCE
LEV1
11
FORCE
LEV2
12
DIST LEV1
13
DIST LEV2
Output signal terminal for Force Level 1, Output time:
approx. 10 ms
(Semiconductor relay. Capacity: 24V AC/DC, 20 mA)
Closes when the set force is reached.
Output signal terminal for Force Level 2, Output time:
approx. 10 ms
(Semiconductor relay. Capacity: 24V AC/DC, 20 mA)
Closes when the set force is reached.
Output signal terminal for Displacement Level 1, Output
time: approx. 10 ms
(Semiconductor relay. Capacity: 24V AC/DC, 20 mA)
Closes when the set displacement is reached.
Output signal terminal for Displacement Level 2, Output
time: approx. 10 ms
(Semiconductor relay. Capacity: 24V AC/DC, 20 mA)
Closes when the set displacement is reached.
Unused.
10. Interface
10-7
MM-370B
11. Time Chart
(1) Normal Measurement
Welding current
SCH1 to 64
GOOD*
(2) At the Occurrence of Error (Current Upper Limit Error)
Welding current
CURR-H*
NG*
(3) NO CURR Input Signal
Welding current
NO CURR (input)
NO CURR* (output)
NG*
* When Output 1 to 7 is set.
11. Time Chart
11-1
MM-370B
12. Data Communication
Monitoring data can be loaded from the MM-370B into the external PC.
(1) Data Transfer
Item
System
Description
Character code
Select one option in the COMMUNICATION
screen.
RS-485-compliant, start-stop, half duplex,
RS-232C
Select one option in the COMMUNICATION
screen.
9600, 19200, 38400 bps
1 start bit, 8 data bits
1 stop bit, even parity
ASCII
Checksum data
None
Connector
D-Sub 9-pin connector
Pin layout
RS-485: 5: SG, 6: RS+, 9: RSRS-232C: 2: RXD, 3: TXD, 5: SG
Transfer rate
Data format
12. Data Communication
12-1
MM-370B
(2) Configuration
a. RS-485
MM-370B
Pin No.
1
2
3
4
5
RS+ 6
7
8
RS- 9
ホHost
ス トcomputer
コ ン ピ ュー タ
装 置No.1
Instrument
No.1
RS-232C
RS+
RS-485
RS-232C/RS-485 conversion
RS-232C/RS-485変
換 ア ダ プadapter
タ
Note: The RS-232C/RS-485 conversion adapter is not
supplied with the product. So please have one
ready.
RS-
D-Sub 9 Pin
Male
Only one instrument can be connected.
b. RS-232C
Host Computer
Pin No.
CD
RXD
TXD
DTR
GND
DSR
RTS
CTS
1
2
3
4
5
6
7
8
9
D-Sub 9 Pin
Female
MM-370B
Pin No.
1
2 RXD
3 TXD
4
5 GND
6
7
8
9
Host computer
ホストコンピュータ
装 置No.1
Instrument
No.1
RS-232C
Only one instrument can be connected.
D-Sub 9 Pin
Male
12. Data Communication
12-2
MM-370B
(3) Protocol
a. Single-Directional Communication
1) Measured values
Data string:
!01,0001:
A B
Header
001,11/14 18:41:55,
C
D
00,N,02.98kA,
E F G
01,N,04.37kA,
H I
J
Data
04,H,0010.0CYC,
K L M
11,N,5794N,
N O
P
13, ,1071ms[CR]
QR S
[LF]
Note: [ ] (shaded) area represents a space.
Item
A
B
Length
Description
2 fixed digits from 00 to 31
4 fixed digits
C
Instrument No.
Measured
value count
Schedule No.
D
Date
E
Measurement
item 1
14 fixed digits
**/** **/**/** (month/day
hour/min./sec.)
2 fixed digits from 00 to 19 (refer to
the Measurement Item No Table)
F
Judgment 1
G
Measured
value 1
H
Measurement
item 2
I
Judgment 2
J
Measured
value 2
3 fixed digits from 001 to 127
Instrument-specific ID
Number of measured values
transmitted
Schedule No. used for
measurement
Measured date
Measured value type*1
(Judgment 1, Measured value 1)
1 fixed digit (refer to the Judgment
Table)
Varies depending on measurement
item (refer to the Measurement Item
No Table)
2 fixed digits from 00 to 19 (refer to
the Measurement Item No Table)
Judgment result of Measured
item 1*1
Value obtained from
measurement of Measured item
1*1
Measured value type*1
1 fixed digit (refer to the Judgment
Table)
Varies depending on measurement
item (refer to the Measurement Item
No Table)
Judgment result of Measured
item 2*1
Value obtained from
measurement of Measured item
2*1
(Judgment 2, Measured value 2)
12. Data Communication
12-3
MM-370B
Item
Length
Description
Measurement
item 3
2 fixed digits from 00 to 19 (refer to
the Measurement Item No Table)
Measured value type*1
L
Judgment 3
M
Measured
value 3
N
Measurement
item 4
1 fixed digit (refer to the Judgment
Table)
Varies depending on measurement
item (refer to the Measurement Item
No Table)
2 fixed digits from 00 to 19 (refer to
the Measurement Item No Table)
Judgment result of Measured
item 3*1
Value obtained from
measurement of Measured item
3*1
Measured value type*1
O
Judgment 4
P
Measured
value 4
Q
Measurement
item 5
1 fixed digit (refer to the Judgment
Table)
Varies depending on measurement
item (refer to the Measurement Item
No Table)
2 fixed digits from 00 to 19 (refer to
the Measurement Item No Table)
Judgment result of Measured
item 4*1
Value obtained from
measurement of Measured item
4*1
Measured value type*1
1 fixed digit (refer to the Judgment
Table)
Varies depending on measurement
item (refer to the Measurement Item
No Table)
Judgment result of Measured
item 5*1
Value obtained from
measurement of Measured item
5*1
K
R
Judgment 5
S
Measured
value 5
*1
(Judgment 3, Measured value 3)
(Judgment 4, Measured value 4)
(Judgment 5, Measured value 5)
Measurement items vary depending on the settings selected for Measurement
(MEAS) 1-5 in the VIEW screen.
Measurement Item No Table
Code
*2
Item
Length
*.***kA (7 digits)*2
*.***kA (7 digits)*2
*.***kA (7 digits)
*.**kA (6 digits)
**.**kA (7 digits)
**.*kA (6 digits)
***.*kA (7 digits)
00
Current (RMS)
01
Current (PEAK)
02
Voltage (RMS)
03
Voltage (PEAK)
04
Current Flow Time
CYC:
****.*CYC (9 digits)
ms:
*****ms (7 digits)
ms-SHORT: ***.**ms (8 digits)
05
Conduction Angle
***deg (6 digits)
06
Power (POWER)
***.**kW (8 digits)
07
Resistance
***.**m0hm (10 digits)
08
Counter
****** (6 digits)
0.200kA range:
0.600kA range:
2.000kA range:
6.00kA range:
20.00kA range:
60.0kA range:
200.0kA range:
6.00V range:
20.0V range:
Only when 10x sensitivity coil is used.
12. Data Communication
12-4
*.**V (5 digits)
**.*V (5 digits)
MM-370B
Code
*3
Length
Item
Force unit: N
MA-520, Decimal position **.**:
**.**N (6 digits)
MA-521, Decimal position ***.*:
***.*N (6 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
****N (5 digits)
Force unit: kgf
MA-520, Decimal position **.**:
**.**kgf (8 digits)
MA-521, Decimal position ***.*:
***.*kgf (8 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
****kgf (7 digits)
Force unit: lbf
MA-520, Decimal position **.**:
**.**lbf (8 digits)
MA-521, Decimal position ***.*:
***.*lbf (8 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
****lbf (7 digits)
09
Mean Force 1
10
Mean Force 2
11
Peak Force
12
Continuous Force*3
Force unit: N
MA-520, Decimal position **.**:
--.---N (6 digits)
MA-521, Decimal position ***.*:
---.-N (6 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
----N (5 digits)
Force unit: kgf
MA-520, Decimal position **.**:
--.---kgf (8 digits)
MA-521, Decimal position ***.*:
---.-kgf (8 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
----kgf (7 digits)
Force unit: lbf
MA-520, Decimal position **.**:
--.---lbf (8 digits)
MA-521, Decimal position ***.*:
---.-lbf (8 digits)
MA-522/770A/771A/710A/711A,
Decimal position ****:
----lbf (7 digits)
13
Force Time
****ms (6 digits)
Since the function to output the measured value of Continuous Force via
communication, the value is output as “-.”
12. Data Communication
12-5
MM-370B
Code
Length
Item
14
Mean External
Voltage
Decimal position *.**: ±*.** (5 digits)
15
Peak External
Voltage
Decimal position ***: ±*** (4 digits)
16
Continuous External*4 Decimal position *.**: --.-- (5 digits)
Decimal position **.*: ±**.* (5 digits)
Decimal position **.*: ---.-(5 digits)
Decimal position ***: ---- (4 digits)
17
External Time
****ms (6 digits)
18
Displacement
Displacement step 01.0μm or less:
±**.***mm (9 digits)
Displacement step 01.1μm or more:
±***.**mm (9 digits)
19
Continuous
Displacement*5
Displacement step 01.0μm or less:
---.---mm (9 digits)
Displacement step 01.1μm or more:
----.---mm (9 digits)
*4
Since the function to output the measured value of Continuous External via
communication, the value is output as “-.”
*5
Since the function to output the measured value of Continuous Displacement via
communication, the value is output as “-.”
Judgment Table
Code
Judgment
(Space) (20H)
N (4EH)
H (48H)
L (4CH)
C (43H)
O (4FH)
I (49H)
P (50H)
No judgment
Normal*6
Upper limit error*6
Lower limit error*6
Lack-of-current error*7*9
Overrange error*9
Impulse error*8*9
Parity error
Error Display on
Measurement Screen
None
NOR
HIGH
LOW
NOCURR
OVER
INPULS
PARITY
*6
Normal, Upper limit error or Lower limit error is output when the measurement item is
Current (RMS, PEAK), Voltage (RAMS, PEAK), Current Flow Time, Power,
Resistance, Force (Mean 1, Mean 2, Peak), External (Mean, Peak) or Displacement.
*7
Lack-of-current error is output when the measurement item is Current (RMS, PEAK),
Voltage (RAMS, PEAK), Current Flow Time, Conduction Angle, Power or
Resistance.
*8
Impulse error is output when the measurement item is Current (RMS, PEAK),
Voltage (RAMS, PEAK), Current Flow Time, Conduction Angle, Power, Resistance
or Displacement.
12. Data Communication
12-6
MM-370B
*9
In case of Lack-of-current error, Overrange error or Impulse error, the value is output
as “-.”
Output example of Impulse error
!01,0001:001,11/14 18:41:55,00,I,--.--kA,01,I,--.--kA,04,I,----.-CYC,
11, ,----N,13, ,----ms[CR][LF]
2) Waveform
Data string:
!01,03191:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
A
B
C
11,N,5794N,13, ,1071ms[CR][LF]
0,1,2,4,[CR][LF],
DEF G
0000.0, 0.00, 0.0, 0.00, 1.85[CR][LF]
H
I
J
K
L
0000.5, 0.00, 0.0, 0.00, 1.90[CR][LF]
0001.0, 0.00, 0.0, 0.00, 1.90[CR][LF]
0001.5, 0.00, 0.0, 0.00, 1.90[CR][LF]
…
No output is produced if waveform display is OFF in the VIEW screen.
The data is as follows if the 3rd item is OFF:
!01,00201:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
11,N,5794N,13, ,1071ms[CR][LF]
0,1,,4[CR][LF]
0000.0, 0.00, 0.0, 1.85[CR][LF]
0000.5, 0.00, 0.0, 1.90[CR][LF]
0001.0, 0.00, 0.0, 1.90[CR][LF]
0001.5, 0.00, 0.0, 1.90[CR][LF]
…
Even if the force or external is measured simultaneously with current etc., the data
of force or external are not output if waveform display of force or external is OFF in
the VIEW screen.
The data is as follows if the 4th item is OFF:
!01,00201:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
11,N,5794N,13, ,1071ms[CR][LF]
0,1,2,[CR][LF]
0000.0, 0.00, 0.0, 0.00[CR][LF]
0000.5, 1.02, 0.5, 0.51[CR][LF]
0001.0, 2.44, 0.7, 1.70[CR][LF]
0001.5, 3.12, 0.8, 2.49[CR][LF]
…
12. Data Communication
12-7
MM-370B
Item
Length
A
Instrument No.
2 fixed digits from 00 to 31
B
Sampling count
5 fixed digit
C
Refer to data (C to S) of “1) Measured values.”
1 fixed digit from 0 to 6 (refer to
Waveform item 1
the Waveform Item Table)
1 fixed digit from 0 to 6 (refer to
Waveform item 2
the Waveform Item Table)
1 fixed digit from 0 to 6 (refer to
Waveform item 3
the Waveform Item Table)
1 fixed digit from 0 to 6 (refer to
Waveform item 4
the Waveform Item Table)
Sampling time
6 fixed digit
Varies depending on
Waveform 1
measurement item (refer to the
Waveform Item Table)
Varies depending on
Waveform 2
measurement item (refer to the
Waveform Item Table)
Varies depending on
Waveform 3
measurement item (refer to the
Waveform Item Table)
Varies depending on
Waveform 4
measurement item (refer to the
Waveform Item Table)
D
E
F
G
H
I
J
K
L
Description
Instrument-specific ID
Number of samplings
transmitted
Measured waveform type*1
Measured waveform type*1
Measured waveform type*1
Measured waveform type*1
Sampling time*2 (unit: ms)
Measured value in each
sampling time of Waveform
item 1*1
Measured value in each
sampling time of Waveform
item 2*1
Measured value in each
sampling time of Waveform
item 3*1
Measured value in each
sampling time of Waveform
item 4*1
*1
Measurement items and presence/absence of output vary depending on the settings
selected for Waveforms (WAVE) 1-4 in the VIEW screen.
*2
May differ from the Waveform Decimation setting in the COMMUNICATION screen
depending on the stored waveform data.
Waveform Item Table
Code
Item
Length
0
Current
5 to 6 digits including zero-suppressed decimal point
1
Voltage
5 digits including zero-suppressed decimal point
2
Power
6 digits including zero-suppressed decimal point
3
Resistance
6 digits including zero-suppressed decimal point
4
Force
4 to 5 digits including zero-suppressed decimal point
5
External
3 to 4 digits including zero-suppressed decimal point
6
Displacement
7 digits including zero-suppressed decimal point
12. Data Communication
12-8
MM-370B
3) Current all cycles
Data string:
!01,0020:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
A
B
C
11,N,5794N,13, ,1071ms[CR][LF]
0.5CYC, , 3.06kA, 0.5V, 133DEG[CR][LF]
D
E
F
G
H
1.0CYC,*, 3.23kA, 0.5V, 147DEG[CR][LF]
1.5CYC,*, 3.11kA, 0.5V, 136DEG[CR][LF]
…
The data is as follows if no conduction angle is output:
!01,0020:001,11/14 19:24:55,00,N,1.97kA,01,N,3.78kA,04,H,10.0CYC,
11, ,0N,13, ,0ms[CR][LF]
0.5CYC, , 1.68kA, 0.3V[CR][LF]
1.0CYC,*, 2.04kA, 0.4V[CR][LF]
1.5CYC,*, 2.02kA, 5.0V[CR][LF]
…
Item
A
B
C
D
E
Length
Instrument No. 2 fixed digits from 00 to 31
All cycles
4 fixed digit
count
Refer to data (C to S) of “1) Measured values.”
Cycle time
CYC: 9 digits including
zero-suppressed decimal point and unit
“CYC”
ms: 7 digits including zero-suppressed
value and unit “ms”
Measurement
1 fixed digit
range
F
Current
G
Voltage
H
Conduction
Angle
7 digits including zero-suppressed
decimal point and unit “kA”
6 digits including zero-suppressed
decimal point and unit “V”
6 digits including zero-suppressed
value and unit “DEG”
12. Data Communication
12-9
Description
Instrument-specific ID
Number of all cycles
transmitted
Cycle time of all cycles
*: Within the range
(space): Outside the
range
Current in each cycle
Voltage in each cycle
Conduction angle in each
cycle
MM-370B
4) Force all cycles
Data string:
!01,0139:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
A
B
C
11,N,5794N,13, ,1071ms[CR][LF]
10ms, ,1024N[CR][LF]
D E F
20ms,*,1124N[CR][LF]
30ms,*,1221N[CR][LF]
…
Item
A
B
C
D
E
F
Length
Instrument No. 2 fixed digits from 00 to 31
All cycles
4 fixed digit
count
Refer to data (C to S) of “1) Measured values.”
Cycle time
7 digits including
zero-suppressed value and unit
“ms”
Measurement
1 fixed digit
range
Force
6 to 8 digits including
zero-suppressed decimal point
and unit “N”, “kgf” or “lbf”
Description
Instrument-specific ID
Number of all cycles
transmitted
Cycle time of all cycles
(ms)
*: Within the range
(space): Outside the
range
Force in each cycle
5) History
Data string:
!01,0003:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
A
B
C
11,N,5794N,13, ,1071ms[CR][LF]
001,11/14 18:41:50,00,N,02.97kA,01,N,04.36kA,04,H,0010.0CYC,
11,N,5793N,13, ,1070ms[CR][LF]
001,11/14 18:41:45,00,N,02.95kA,01,N,04.34kA,04,N,0009.0CYC,
11,N,5783N,13, ,1075ms[CR][LF]
Item
Length
A
B
Instrument No.
History count
2 fixed digits from 00 to 31
4 fixed digit
C
Refer to data (C to S) of “1) Measured values.”
12. Data Communication
12-10
Description
Instrument-specific ID
Number of histories
transmitted
MM-370B
6) Error history
Data string:
!01,0002:001,11/14 18:41:55,00,N,02.98kA,01,N,04.37kA,04,H,0010.0CYC,
A
B
C
11,N,5794N,13, ,1071ms[CR][LF]
001,11/14 18:41:50,00,N,02.97kA,01,N,04.36kA,04,H,0010.0CYC,
11,N,5793N,13, ,1070ms[CR][LF]
Item
A
B
Length
Instrument No. 2 fixed digits from 00 to 31
Error history
4 fixed digit
count
Refer to data (C to S) of “1) Measured values.”
C
Description
Instrument-specific ID
Number of error
histories transmitted
Error history is output when the history of Upper limit error, Lower limit error,
Lack-of-current error, Overrange error, Impulse error or Parity error exists.
Error codes E01 to E11 cannot be output via communication.
b. Bi-Directional Communication
Description of Symbols
ID1, ID2:
Shows Device No.
Fixed to 2 digits (ID1=Ten’s place, ID2=One’s place)
SH1, SH2, SH3: Shows Schedule No.
Fixed to 3 digits (SH1=Hundred’s place, SH2=Ten’s place, SH3= One’s place)
DT1:
Shows Data type.
Fixed to 1 digit (1: Measured value, 2: Current all cycles, 3: Force all
cycles, 4: Waveform data)
CR:
Carriage return code (0x0d)
LF:
Line feed code (0x0a)
Code
Contents
Format
I
Inquiry about Model
and ROM Version
PC -> MM-370B
# ID1 ID2 I CR LF
(#01ICRLF)
MM-370B -> PC
! ID1 ID2 : MM-370B , ROM version CR LF
(! 0 1 : M M – 3 7 0 B , V 0 0 – 0 0 A CR LF)
R
Reading of Schedule
Data
PC -> MM-370B
# ID1 ID2 R SH1 SH2 SH3 CR LF
(# 0 1 R 0 0 1 CR LF)
MM-370B -> PC
! ID1 ID2 Schedule data CR LF
(! 0 1 0 0 1 ... CR LF)
12. Data Communication
12-11
MM-370B
Code
Contents
Format
W
Writing of Schedule
Data
PC -> MM-370B
# ID1 ID2 W SH1 SH2 SH3 : Schedule data CR LF
(# 0 1 W 0 0 1 : 0 0 , ... CR LF)
MM-370B -> PC
! ID1 ID2 : SH1 SH2 SH3 Schedule data CR LF
(! 0 1 : 0 0 1 0 0 ... CR LF)
?
Reading of Various
Data
PC -> MM-370B
# ID1 ID2 ? DT1 CR LF
(# 0 1 ? 1 CR LF)
MM-370B -> PC
! ID1 ID2 , Data CR LF
(! 0 1 , 0 0 0 0 ... CR LF)
B
Reading of Screen
Copy
PC -> MM-370B
# ID1 ID2 B CR LF
(# 0 1 B CR LF)
MM-370B -> PC
Screen image data (76800 bytes)
(F F F F F F ... 0 0 A A 5 5 ...)
12. Data Communication
12-12
MM-370B
(4) Communication Data
1) Schedule data
Data No.
Item
Setting Range
1
Trigger
0: Current, 1: Auto, 2: Force, 3: External, 4:
Displacement
2
Trigger mode
0: Normal, 1: Normal trace, 2: Single, 3:
Real time
3
Current
0: AC, 1: DC
4
Time
0: CYC-50/60Hz, 1: ms, 2: CYC-***Hz, 3:
CYC-LONG, 4: ms-SHORT
5
Current range
0: 2kA, 1: 6kA, 2: 20kA, 3: 60kA, 4: 200kA
6
Voltage range
0: 6V, 1: 20V
7
Start cycle
Refer to (2) j, Chapter 8.
8
End cycle
Refer to (2) j, Chapter 8.
9
Frequency
033: M050, 034: M053, 035: M056, 036:
M059, 037: M063, 038: M067, 039: M071,
040: M077, 041: M083, 042: M091, 043:
M100, 044: M111, 045: M125, 046: M143,
047: M167, 048: M200, 049: M250, 050 to
250: 50 to 250 (Hz)
10
Impulse mode
0: Specified pulse, 1: All pulses, 2: No
cooling
11
Impulse No.
00 to 20
12
Start current value
0.000 to 2.000: 2kA range
00.00 to 06.00: 6kA range
00.00 to 20.00: 20kA range
000.0 to 060.0: 60kA range
000.0 to 200.0: 200kA range
13
Cool time
CYC: 00.0 to 99.5CYC
ms: 00 to 99ms
ms-SHORT: 0.0 to 9.9ms
14
Current fall level
10 to 90
15
Current end level
01.5 to 15.5 (in unit of 0.5)
16
Measurement pause
time
0.0 to 9.9
17
Forced measurement
time
CYC: 0.5 to 9.5CYC
ms: 01 to 99ms
ms-SHORT: 0.1 to 9.9ms
18
Force rise level
10 to 90
19
Force fall level
12. Data Communication
12-13
MM-370B
Data No.
Item
Setting Range
0000 to 6000
20
Force start time 1
21
Force start time 2
22
Force end 1
23
Force end 2
24
External start time
25
External end time
26
Force level output 1
27
Force level output 2
0000 to 9999
For format, refer to Length of Mean Force 1
in the Measurement Item No Table, (3) a 1,
Chapter 12.
28
Displacement delay time
000 to 999
29
Displacement level
output 1
30
Displacement level
output 2
-30000 to +30000
For format, refer to Displacement in the
Measurement Item No Table, (3) a 1,
Chapter 12.
31
Comparator type 1
32
Comparator upper limit 1
33
Comparator lower limit 1
34
Comparator type 2
35
Comparator upper limit 2
36
Comparator lower limit 2
37
Comparator type 3
38
Comparator upper limit 3
39
Comparator lower limit 3
40
Comparator type 4
41
Comparator upper limit 4
42
Comparator lower limit 4
43
Comparator type 5
44
Comparator upper limit 5
45
Comparator lower limit 5
For type 1 to 5, refer to Code in the
Measurement Item No Table, (3) a 1,
Chapter 12.
For upper/lower limi1 to 5, refer to Length in
the Measurement Item No Table, (3) a 1,
Chapter 12.
Current (RMS) and Current (PEAK) with
6.00kA range or 60.0kA range are as
follows:
6.00kA range: **.**kA (7 digits)
60.0kA range: ***.*kA(7 digits)
Resistance is as follows:
***.**moh (9 digits)
2) System data
Data No.
Item
Setting Range
1
Measured value type 1
2
Measured value type 2
3
Measured value type 3
4
Measured value type 4
5
Measured value type 5
Refer to Code in the Measurement Item No
Table, (3) a 1, Chapter 12.
12. Data Communication
12-14
MM-370B
Data No.
Item
Setting Range
0: Current, 1: Voltage, 2: Power, 3:
Resistance, 4: Force, 5: External, 6:
Displacement
6
Waveform 1
7
Waveform 2
8
Waveform 3
9
Waveform 4
10
Waveform display
ON/OFF1
11
Waveform display
ON/OFF2
12
Waveform display
ON/OFF3
13
Waveform display
ON/OFF4
14
Print setting
0: OFF, 1: Measured value, 2: Waveform
data, 3: Measured value history, 4: Error
history, 5: Schedule data, 6: Screen copy,
7: Current all cycle, 8: Force all cycle
15
Print interval
1 to 999
16
Error printing
0: OFF, 1: ON
17
Schedule data range
(start)
1 to 127
18
Schedule data range
(end)
19
Coil
0: 1 time, 1: 10 times
20
Trigger level
1 to 99
21
Measurement selection
0: Force, 1: External
22
Force trigger level
02.0 to 99.9
23
Force unit
0: N, 1: kgf, 2: lbf
24
Force sensor
0: MA-520, 1: MA-521, 2: MA-522, 3:
MA-710A, 4: MA-711A, 5: MA-770A, 6:
MA-771A, 7: Rated setting
25
Force rating
0490 to 9806 (N)
0050 to 1000 (kgf)
0110 to 2205 (lbf)
26
Force decimal point
0: **.**, 1: ***.*, 2: ****
27
Force span
0500 to 1500
28
External trigger level
02.0 to 99.9
29
External rating
100 to 999
30
External decimal point
0: *.**, 1: **.*, 2: ***
31
Preset counter
000000 to 999999
32
Power-off time
00 to 30
33
Displacement output
range
0: 2mm, 1: 10mm, 2: 30mm
0: OFF, 1: ON
12. Data Communication
12-15
MM-370B
Data No.
Item
Setting Range
34
Displacement step
00.1 to 10.0
35
Displacement unit
0: mm, 1: inch
36
Displacement polarity
0: NORMAL, 1: REVERSE
37
Language
0: Japanese, 1: Chinese, 2: Korean, 3:
English, 4: French, 5: German, 6: Spanish
38
Output 1-1
39
Output 1-2
40
Output 1-3
41
Output 2-1
42
Output 2-2
43
Output 2-3
44
Output 3-1
45
Output 3-2
46
Output 3-3
47
Output 4-1
48
Output 4-2
49
Output 4-3
50
Output 5-1
51
Output 5-2
00: No setting,
01: CURR-H, 02: CURR-L,
03: VOLT-H, 04: VOLT-L,
05: TIME-H, 06: TIME-L,
07: POWER-H, 08: POWER-L,
09: REGIS-H, 10: REGIS-L,
11: NOCURR,
12: SCHNG,
13: NG,
14: TROUBLE,
15: GOOD,
16: COUNT,
17: POWER,
18: READY,
19: FORCE-H, 20: FORCE-L,
21: EXT-H, 22: EXT-L
23: DISPL-H, 24: DISPL-L
52
Output 5-3
53
Output 6-1
54
Output 6-2
55
Output 6-3
56
Output 7-1
57
Output 7-2
58
Output 7-3
59
Output setting
0: NORMAL CLOSE, 1: NORMAL OPEN
60
Output time
0: 10ms, 1: 100ms, 2: HOLD
61
Parity
0: OFF, 1: ON
62
Input stability time
0: 1ms, 1: 10ms
63
Displacement / Force
output
0: PULSE, 1: LEVEL
12. Data Communication
12-16
MM-370B
The following items are not included in the system data. Therefore, these items do not
change if the stored system data is returned.
STATUS (2) screen
CONTRAST
STATUS (3) screen
SAVE FORMAT
USB screen
USB TYPE, FILE NUMBER, SCHEDULE
AREA
COMMUNICATION
screen
COMM MODE, COMM TYPE, ID
NUMBER, COMM SPEED, COMM
OUTPUT, WAVEFORM RES, UNIT
3) Various data
Data
Type
Format
1
Measured value
Refer to a 1) Measured values in Chapter 12.
2
Current all cycle
Refer to a 3) Current all cycles in Chapter 12.
3
Force all cycle
Refer to a 4) Force all cycles in Chapter 12.
4
Waveform data
Refer to a 2) Waveform in Chapter 12.
4) Screen copy data
The 320 x 240-dot color data from the upper left portion of the screen is
transmitted.
The relationship between data and color is as shown below.
Data
Color
0
Black
1
Dark blue
2
Dark green
3
Dark light blue
4
Dark red
5
Dark purple
6
Brown
7
Light grey
8
Dark grey
9
Blue
A
Green
B
Light blue
C
Red
D
Purple
E
Yellow
F
White
12. Data Communication
12-17
MM-370B
(5) PC Operation Example
In this PC operation example, the Hyper Terminal that comes with Windows 95, Windows
98, Windows 2000 or Windows XP (32-bit version) is given as example.
The Hyper Terminal does not come with Windows Vista and Windows 7. Use Windows
that includes the Hyper Terminal.
The method to receive measurement values using RS-232C is described below.
a. Check if the Hyper Terminal has been Installed on a Computer.
b. Install the Hyper Terminal.
c. Connect the Weld Checker with a Computer.
d. Set the Hyper Terminal.
e. Set the Weld Checker.
f. Start Communication.
a. Check if the Hyper Terminal has been Installed on a Computer.
If the Hyper Terminal has been installed, the Hyper Terminal will be displayed in the
menu. Click on the [Start] button on the lower left portion of the screen.
(On Windows 98)
Program -> Accessories -> Communications -> Hyper Terminal
If the Hyper Terminal is displayed in the menu, go to c. Connect the Weld Checker
with a Computer.
12. Data Communication
12-18
MM-370B
b. Install the Hyper Terminal.
1) Click on the [Start] button on the lower left portion of the screen, point to [Settings]
and then select [Control Panel].
2) Double-click [Add/Remove Programs] in the Control Panel window.
12. Data Communication
12-19
MM-370B
3) When the Add/Remove Programs Properties window appears, click [Windows
Setup] tab. Select [Communications] in [Components] field and click [OK] button.
4) When the Communications window appears, select [Hyper Terminal] and click
[OK] button. Installation of the Hyper Terminal starts.
c. Connect the Weld Checker with a Computer.
Connect the communication connector at the rear of the Weld Checker and a computer
with the cable (sold separately)
12. Data Communication
12-20
MM-370B
d. Set the Hyper Terminal.
1) Click on the [Start] button on the lower left portion of the screen and select [Hyper
Terminal].
2) When the Hyper Terminal window appears, double-click [Hypertrm.exe].
3) The Hyper Terminal starts and the Connection Description window appears.
4) Type a name. “COM” is typed in the example at right.
5) Select an icon you like and click [OK] button.
12. Data Communication
12-21
MM-370B
6) When the Connect To window appears, set [Connect using]. Select the connector
connecting the cable. [Connect to COM1] is set in the example.
7) Click [OK] button. The COM1 Properties window appears.
8) Set [Bits per second], [Data bits], [Parity], [Stop bits] and [Flow control] as shown
the figure below.
9) Click [OK] button to close the COM1 Properties window.
12. Data Communication
12-22
MM-370B
10) Select [Exit] from [File] menu. When the message “Do you want to save session
COM?” appears, click [Yes] button.
The setting may not be saved depending on the computer to be used. In that case,
perform the steps from 1) again and skip the steps 10) and 11).
11) The set icon (COM.ht) is displayed in the Hyper Terminal window.
e. Set the Weld Checker.
Refer to (2) o in the Chapter 8 to set COMM MODE to ONE WAY COMM, COMM
TYPE to RS-232, COMM SPEED to 9600, and COMM OUTPUT to MEASUREMENT.
f. Start Communication.
1) Connect the Weld Checker with a computer.
2) Turn on the Weld Checker.
3) Open the Hyper Terminal window from the start menu of a computer, double-click
the [COM.ht] icon.
12. Data Communication
12-23
MM-370B
4) When the COM - Hyper Terminal window appears, select [Capture Text] from
[Transfer] menu.
5) When the Capture Text window appears, type a filename including the path and
click [Start] button. “C:¥COM¥DATA.CSV” is typed in the example below.
ATTENTION
Be sure to type the extension “.csv” at the end of the filename.
6) When the communication ends, [END] is displayed at the bottom of the screen.
Point to [Capture Text] from [Transfer] menu, and then select [Stop].
12. Data Communication
12-24
MM-370B
7) Select [Exit] from [File] menu. When the message “You are currently connected.
Are you sure you want to disconnect now?” is displayed, click [Yes] button.
Now the Hyper Terminal ends.
8) The saved data (csv format) can be read in Microsoft Excel.
• Windows 95/Windows 98/Windows 2000/Windows XP/Windows Vista/Windows 7
are registered trademarks of Microsoft Corporation, USA.
• Hyper Terminal is registered trademark of Hilgrave Inc., USA.
• TM and the mark are not used in this manual.
12. Data Communication
12-25
MM-370B
13. Error List
The MM-370B informs of an error occurrence by showing the error number.
Error
code
Description
Cause
Remedy
Turn off the power and on again.
If "E01" (SYSTEM ERROR) appears again,
the MM-370B needs repair. Please
contact Miyachi Corporation.
Check all the settings.
If the data in memory is damaged, the
following are possible causes:
• Generation of powerful power supply or
electrostatic noise
• Abnormal supply voltage resulting, for
example, from lightening or induced
lightening
• Flash memory’s rewrite limit exceeded
It would be useful to record the settings in
preparation for data damage. To print the
settings, refer to “n. PRINT Screen” in
Chapter 8 Operation Screens.
When you switch ON the power switch
while holding down the MENU key, a
message “Initializing --- Please wait a
moment.” appears, after which the memory
is initialized, resetting all settings back to
factory settings. Set the data you recorded
again. The memory will be initialized in
approximately 10 seconds. Do not turn
OFF the power during the initialization.
If "E02" (SCH MEMORY ERROR) appears
again, the MM-370B needs repair. Please
contact Miyachi Corporation.
Measured value data in memory is corrupt.
If the data in memory is corrupt, the
following are possible causes:
• Generation of power supply noise, or
electrostatic noise
• Abnormal supply voltage resulting, for
example, from lightening or induced
lightening
• Low memory battery voltage
It is advisable to back-up measured value
data onto other media often, as a
precaution against possible data
corruption.
If "E03" (MON MEMORY ERROR) appears
again, the MM-370B needs repair. Please
contact Miyachi Corporation.
E01
SYSTEM
ERROR
E02
SCH
MEMORY
ERROR
Problem
detected in
MM-370B’s
control system
Schedule data in
memory is
damaged
E03
MON
MEMORY
ERROR
Measured value
data in memory
is corrupt.
E04
MEM
BATTERY
ERROR
The backup
battery voltage is
2.2 V or less.
13. Error List
13-1
Replace the batteries.
MM-370B
Error
code
Description
Cause
Remedy
E05
CLOCK
TROUBLE
Loss of the hour
due to low
voltage of the
backup current
Set the clock.
E06
FORCE
SENSOR
ERROR
Unable to set the
force offset to 0.
After
measurement,
the force and
external ±10 V
voltage input
signals remain
above the trigger
levels.
E07
START
LEVEL
ERROR
A problem was
detected in the
current detection
circuit.
E09
PRINTER
ERROR
A problem was
detected in the
printer.
E10
EXT POWER
OVER
The built-in 24V
DC power, output
from the rear
terminal, was
overloaded.
E11
FREQUENCY
ERROR
A problem was
detected in the
frequency
detection circuit.
If no force sensor is connected, connect a
force sensor or select a setting other than
AUTO, FORCE and EXT for TRIGGER in
the SETUP (1) screen.
If, after measurement, force continues to
be applied or external ±10 V voltage input
continues to be supplied, bring the force or
voltage input down below the trigger level
after measurement.
If "E06" (FORCE SENSOR ERROR)
appears again, the MM-370B needs
repair. Please contact Miyachi Corporation.
Turn off the power and on again.
If "E07" (START LEVEL ERROR) appears
again, the MM-370B needs repair. Please
contact Miyachi Corporation.
Check the printer for paper. If the printer is
out of paper, load new paper.
If the printer paper cover is open, close the
cover.
Turn off the power, and check the I/O
connections on the rear.
• Check if the 24V DC power supply is
not shorted.
• Check if nothing with the large current
capacity is connected.
Do not use the internal power supply other
than for external input signals.
Turn off the power and on again.
If "E11" (FREQUENCY ERROR) appears
again, the MM-370B needs repair. Please
contact Miyachi Corporation.
E13
CURR
TRIGGER
ERROR
After
measurement,
the current
continues to flow.
The current
trigger remains
above the trigger
level.
13. Error List
13-2
When the current is measured over the
maximum time, set the weld time shorter
than the maximum time of current
measurement.
If an error occurs after the HOLD is
canceled, the current trigger sensitivity may
be high. Decrease the value.
If "E13" (CURR TRIGGER ERROR)
appears again, the MM-370B needs
repair. Please contact Miyachi Corporation.
MM-370B
Description
Error display
MEASURE
MENT
screen
HISTORY
screen
NOR
None
HIGH
H
LOW
L
NOCURR
C
OVER
O
INPULS
I
PARITY
P
COUNT
None
Measured value is between the upper and lower limits set in the
SETUP (4) screen.
Measured value is greater than the upper limit set in the
SETUP (4) screen.
Measured value is smaller than the lower limit set in the SETUP
(4) screen.
Input must be fed to the NO CURR signal if you wish to use the
lack of current judgment feature in the event of lack of welding
current (if lack of current flow is detected). (Refer to Chapter 10,
“(2) Description of the External I/O Signals.”)
Measured value is outside the measurable range.
Check the range for each item. Check also whether the welding
power supply is operating properly.
Current flow stopped before the set number of stages was
reached during impulse measurement.
Check the impulse settings. Check also whether the welding
power supply is operating properly.
The total number of schedule selection and parity signals
closed is not odd.
Select the parity signal and close the schedule selection and
parity signals so that the total number of closed signals is odd.
This error occurs if you have selected ON for the parity terminal
in the I/O SET (2) screen.
Count exceeds the preset value.
Check the preset counter or reset the count.
13. Error List
13-3
MM-370B
14. Specification
(1) Measurement Specification
Target
Specification
Measurement
range
2.000kA range: 0.100 to 2.000kA
6.00kA range: 0.30 to 6.00kA
20.00kA range: 1.00 to 20.00kA
60.0kA range: 3.0 to 60.0kA
200.0kA range: 10.0 to 200.0kA
Measurement
time
• Current: AC, Time: CYC-50/60Hz, CYC-***Hz
0.5 to 200.0CYC (50Hz), 0.5 to 240.0CYC (60Hz),
0.5 to 1000.0CYC (250Hz)
• Current: AC, Time: ms
1 to 2000ms
• Current: AC, Time: CYC-LONG
0.5 to 500.0CYC (50Hz), 0.5 to 600.0CYC (60Hz)
• Current: DC, Time: CYC-50/60Hz
0.5 to 100.0CYC (50Hz), 0.5 to 120.0CYC (60Hz)
• Current: DC, Time: ms
1 to 2000ms
• Current: DC, Time: ms-SHORT
0.50 to 100.00ms (0.05-ms increment)
Current
Maximum value (peak value) within the current flow
time or RMS in the interval from the start to end of the
measurement
Measurement
item
RMS depending on the measurement mode
CYC mode: Arithmetic mean RMS every half-cycle
ms mode: Arithmetic mean RMS every 1ms
ms-SHORT mode: RMS in the interval from the
start to end of the measurement
14. Specification
14-1
MM-370B
Target
Current
Specification
Measurement
accuracy
Current:
RMS
<2.000kA, 20.00kA or 200.0kA range>
Single-phase AC welding power supply
± (1%rdg+9dgt)
AC inverter welding power supply, DC inverter
welding power supply, transistor welding power
supply
± (1%rdg+15dgt)
<6.00kA or 60.0kA range>
Single-phase AC welding power supply
± (1%rdg+3dgt)
AC inverter welding power supply, DC inverter
welding power supply, transistor welding power
supply
± (1%rdg+5dgt)
Peak value
<2.000kA, 20.00kA or 200.0kA range>
Single-phase AC welding power supply
± (1%rdg+9dgt)
AC inverter welding power supply, DC inverter
welding power supply, transistor welding power
supply
± (1%rdg+20dgt)
<6.00kA or 60.0kA range>
Single-phase AC welding power supply
± (1%rdg+3dgt)
AC inverter welding power supply, DC inverter
welding power supply, transistor welding power
supply
± (1%rdg+7dgt)
Time:
<CYC mode>
Single-phase AC welding power supply
±0CYC
AC inverter welding power supply, DC inverter
welding power supply
±0.5CYC
<ms mode>
AC inverter welding power supply, DC inverter
welding power supply, transistor welding power
supply
±1ms
<ms-SHORT mode>
Transistor welding power supply
±0.05ms
Detection
method
Toroidal coil
(Recommended: MB-800K, MB-400K, MB-45F)
14. Specification
14-2
MM-370B
Target
Specification
Measurement
range
6.00V range: 0.30 to 6.00V
20.0V range: 1.0 to 20.0V
Maximum value (peak value) within the current flow
time or RMS in the interval from the start to end of the
measurement
Voltage
Measurement
item
RMS depending on the measurement mode
CYC mode: Arithmetic mean RMS every half-cycle
ms mode: Arithmetic mean RMS every 1ms
ms-SHORT mode: RMS in the interval from the
start to end of the measurement
Measurement
accuracy
± (1%rdg+3dgt)
Measurement
range
Force*
MA-520
4.90 to 98.06N, 0.50 to 10.00kgf, 1.10 to
22.04lbf
MA-521
49.0 to 980.6N, 5.0 to 100.0kgf, 11.0 to
220.4lbf
MA-710A
MA-770A
245 to 4903N, 25 to 500kgf, 55 to 1102lbf
MA-522
MA-711A
MA-771A
490 to 9806N, 50 to 1000kgf, 110 to
2204lbf
Rated
setting
5% to 100% of rated setting
Measurement
time
1 to 6000ms
Measurement
item
Arithmetic mean RMS/maximum (peak)
Measurement
accuracy
± (Full scale error of load cell +2%rdg+29dgt)
Detection
method
Force sensor: MA-520A/MA-521A/MA-522A
Current/force sensor: MA-770A/MA-771A
Input voltage
range
-10V to +10V
Measurement
range
5% to 100% of rated setting
External ±10V Measurement
voltage input* time
1 to 6000ms
Measurement
item
Mean value/maximum (peak)
Measurement
accuracy
± (2%rdg+15dgt)
14. Specification
14-3
MM-370B
Target
Specification
Measurement
range
Displacement
*
Measurement
item
Measurement
accuracy
Conduction
Angle
Measurement
range
Measured
values
The measurement range changes depending on the
DIST RESOLUTION setting. The measurement range
of displacement is ± (DIST RESOLUTION setting x
30000) μm.
(Ex.) When the DIST RESOLUTION setting is 1 μm:
±30.000mm
When the DIST RESOLUTION setting is 10 μm:
±300.00mm
Starts measurement at the start of current flow and
measures the displacement at the end of delay time.
± (0.05% of full scale)
±30.000mm range: ±150m (sensor with 1μm or less
resolution)
±300.00 mm range: ±150m (sensor with 1.1μm or more
resolution)
0 to 180 degrees
Max. conduction angle over measurement interval
Select five measurement values from the following to display:
Current (RMS)
Current (PEAK)
Voltage(RMS)
Voltage (PEAK)
Conduction angle
Power
Resistance
Measurement
value display Weld time
Force 1 (AVE)*
Force 2 (AVE)*
Force (PEAK)*
Force time*
External ±10V voltage input (AVE)*
External ±10V voltage input (PEAK)*
External ±10V voltage input time*
Displacement*
Waveform
display
Select four waveforms from the following to display (The waveform is
displayed coarsely since the measurement result is skipped.):
Current waveform
Voltage waveform
Resistance waveform
Power waveform
Force waveform*
Displacement waveform*
External ±10V voltage input waveform*
14. Specification
14-4
MM-370B
Target
Specification
All cycle
display
Current, voltage, conduction angle (Conduction angle appears only
when AC is selected for CURR and CYC-50/60 Hz, CYC-*** Hz or
CYC-LONG is selected for TIME in the SETUP (1) screen.)
Displays data every half-cycle or 1 ms
Force*
Displays data every 10ms.
Trigger
method
Current normal mode
Current single-trace mode
Current normal trace mode
Force normal mode*
Force single-trace mode*
Force normal trace mode*
External ±10V voltage input normal mode*
External ±10V voltage input single-trace mode*
External ±10V voltage input normal trace mode*
Auto trigger*
Displacement external normal mode*
Force constant start mode*
Displacement constant start mode*
External ±10V voltage input constant start mode*
Impulse
Specified pulse measurement
All pulses measurement 20 pulses maximum
No cooling, 2nd stage measurement (Measurement is possible only if the
current at the second stage is larger than that at the first stage.)
Judgment
function
Upper/lower limit judgment of five measurements selected for
measurement value display
No-current judgment
*:
Force/displacement-equipped specification function
14. Specification
14-5
MM-370B
(2) Specification of the MM-370B
Item
Specifications
Display items
MEASUREMENT screen
VIEW screen
WAVEFORM screen
ALL CYCLE screen
WAVEFORM (FORCE) screen
SETUP screens
PRINT screen
COMMUNICATION screen
USB screen
HISTORY screen
DATA READ screen
STATUS screens
I/O SET screens
I/O TEST screen
Printer output
Printer is built in.
External data
output
RS-232C/RS-485
Schedules
Number of schedules: 127
Power supply
Single-phase 100 to 240V AC±10% (50/60Hz)
Operating
temperature
Outer
dimensions
0°C to 45°C
269mm (H) x 172mm (W) x 290mm (D) (excluding protrusions)
Mass
Approx. 5kg
Power
consumption
22W (50W with printer running)
14. Specification
14-6
MM-370B
15. Calibration
Regular calibration is required to maintain the MM-370B performance.
Calibration is conducted at our facility.
For calibration, please send your toroidal coil and force sensor together with the MM-370B.
Depending on the operating environment, the extent of deterioration varies from one
MM-370B to another. Therefore, the MM-370B must be calibrated together with the toroidal
coil and the force sensor as a set.
For more information about calibration, contact Miyachi Corporation.
15. Calibration
15-1
MM-370B
16. Appearance
(1) MM-370B
(Unit: mm)
16. Appearance
16-1
MM-370B
(2) Displacement Sensor
a. GS-1830 Type, Ono Sokki
34
φ4
φ15.5
Cable length: Approx. 1.9m
(3.5)
8.5
φ11
Surface
for fixing
0
φ15-0.009
(63.5)
1
33
13
21
(20)
9
9 (12)
1
16. Appearance
16-2
79
3.5
14±0.1
82.5
13
15.5
3.5
2-φ
205.5
123
119.5
10.5
MM-370B
b. GS-1813 Type, Ono Sokki
34
φ4
(3.5)
8.5
φ11
14±0.1
0
φ15 -0.009
(39.5)
33
9
13
21
(20)
1
9 (12)
1
16. Appearance
16-3
55
13
2-φ
3.5
15.5
3.5
Surface
for fixing
141.5
83
79.5
10.5
58.5
φ15.5
Cable length: Approx. 1.9m
MM-370B
c. LGK-110 Type, Mitutoyo
125.5
73.1
φ 12
6.5
Screw for fixing
Thrust Stem
M9.5 × 0.5
31.9
10.6 or more
(Stroke)
14
0
φ8 ー0.015
(h7)
16. Appearance
16-4
MM-370B
d. LGF-125L-B Type, Mitutoyo
41
φ18
20.6
0.6
61.7
20
34
30.7
(Thread height)
114.7
Cable length=2m
(208.3)
8.6
0
22
φ15 -0.015
(Stroke)
26 or more
93.6
6.5
M14×0.5
Screw for fixing
Thrust Stem
13.8
16. Appearance
16-5
MM-370B
12
φ13
19.2
110.3
58.5
φ5.1
e. ST1278 Type, HEIDENHAIN
0
- 0.009
φ13
(h6)
16. Appearance
16-6