Enclosed Combination Starter
Model MST Digital Soft−Start
10/14
Installation & Operating Manual
MN853
Any trademarks used in this manual are the property of their respective owners.
Important:
Be sure to check www.baldor.com for the latest software, firmware and drivers for your Soft-Start product. Also you can
download the latest version of this manual in Adobe Acrobat PDF format.
Table of Contents
Chapter 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Getting Assistance from Baldor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.6 Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.7 Soft Starter program settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1 Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1.1 Physical Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1.2 Procedure Floor Mounted Enclosures: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.2 AC Main Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.3 Wire Size and Protection Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.4 Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 Phase Sequence Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 Space Heater Optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 TB1 Remote Control Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.8 Control Circuit Transformer (CCT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.9 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 3
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.1 Circuit Breaker Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.1.1 Inrush current (estimation). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.1.2 Motor KVA/HP Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.2 Electronic Trip Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.2.1 Overload Protection (L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.2.2 Short Circuit Protection with Delayed Trip (S). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.2.3 Instantaneous Short Circuit Protection (I). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.3 Overload Relay Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4.1 Reset the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4.2 Reset an Overload Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4.1 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 5
Specifications and Product Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
5.1 Catalog Number Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
5.2 Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2.1 Wall Mount Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2.2 Floor Mount Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Appendix A
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
MN853
i
ii
MN853
Chapter 1
Introduction
This manual is intended for qualified electrical personnel familiar with installing, programming, and maintaining
AC Soft Starters.
1.1 Getting Assistance from Baldor
For technical assistance, contact your Baldor District Office. Before calling, please review the Troubleshooting Chapter of
this manual. You will be asked for the model number or catalog number that is located on the Nameplate along with the
serial number.
1.2 Responsibility
When your equipment is delivered, it becomes the responsibility of the owner/operator to prevent unsafe conditions and
operation of the equipment. Some responsibilities include (but are not limited to) the following:
1. It is the responsibility of the owner/operator to ensure that this equipment is correctly and safely installed.
2. It is the responsibility of the owner/operator to ensure that this equipment, when installed fully complies with all federal,
state and local codes.
3. It is the responsibility of the owner/operator to ensure that any person operating this equipment has been properly
trained.
4. It is the responsibility of the owner/operator to ensure that any person operating this equipment has access to all
manuals and information required for the safe use and operation of this equipment.
5. It is the responsibility of the owner/operator to ensure that it is properly maintained and safety inspected at regular
scheduled intervals.
6. It is the responsibility of the owner/operator to ensure that any person who has not been trained on the safe use of this
equipment does not have access to this equipment.
1.3 Safety Notices
This equipment contains voltages that may be as high as 860 volts! Electrical shock can cause serious or fatal injury.
Only qualified personnel should attempt the start-up procedure or troubleshoot this equipment.
This equipment may be connected to other machines that have rotating parts or parts that are driven by this equipment.
Improper use can cause serious or fatal injury. Only qualified personnel should attempt the start-up procedure or
troubleshoot this equipment.
Precaution Statements Used In This Manual
There are three classifications of precautionary statements used in this manual. The most critical is a WARNING statement,
then the Caution statement and the least critical is the Note statement. The usage of each statement is as follows:
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in injury or death.
Caution: Indicates a potentially hazardous situation which, if not avoided, could result in damage to property.
Note: Additional information that is not critical to the installation or operation.
PRECAUTIONS
WARNING: Do not touch any circuit board, power device or electrical connection before you first ensure that power has
been disconnected and there is no high voltage present from this equipment or other equipment to which it is
connected. Electrical shock can cause serious or fatal injury.
WARNING: Be sure the system is properly grounded before applying power. Do not apply AC power before you ensure that
all grounding instructions have been followed. Electrical shock can cause serious or fatal injury.
WARNING: Do not use motor overload relays with and automatic reset feature. These are dangerous since the process may
injure someone is a sudden or unexpected automatic restart occurs. If manual reset relays are not available,
disable the automatic restart feature using external control wiring.
WARNING: Be sure the system is properly grounded before applying power. Do not apply AC power before you ensure that
all grounding guidelines have been followed. Electrical shock can cause serious or fatal injury.
WARNING: Improper operation of control may cause violent motion of the motor shaft and driven equipment. Be certain
that unexpected motor shaft movement will not cause injury to personnel or damage to equipment. Certain
failure modes of the control can produce peak torque of several times the rated motor torque.
WARNING: MEDICAL DEVICE/PACEMAKER DANGER - Magnetic and electromagnetic fields in the vicinity of current
carrying conductors and industrial motors can result in a serious health hazard to persons with cardiac
pacemakers, internal cardiac defibrillators, neurostimulators, metal implants, cochlear implants, hearing aids,
and other medical devices. To avoid risk, stay away from the area surrounding a motor and its current carrying
conductors.
MN853
Introduction 1-1
1.3 Safety Notices Continued
WARNING: Motor circuit may have high voltage present whenever AC power is applied, even when motor is not rotating.
Electrical shock can cause serious or fatal injury.
WARNING: Across the line motor operation is possible in DEMO Mode. In DEMO Mode, if L1, L2, L3 are applied to the
Soft Starter the motor will operate when TOR (top of ramp) relay activates. Be certain that unexpected motor
shaft movement will not cause injury to personnel or damage to equipment.
WARNING: Combination Soft Starter is phase rotation sensitive. If shaft rotation direction is wrong in these modes, refer to
Chapter 2 Phase Sequence Verification to change rotation direction.
Caution: Control Power Transformer must be properly connected for Line Voltage supplied. (See transformer examples).
Caution: Disconnect motor leads (T1, T2 and T3) from control before you perform a “Dielectric Withstand” test on the
motor. Failure to disconnect motor from the control will result in extensive damage to the control. The control is
tested at the factory for high voltage / leakage resistance as part of Underwriter Laboratory requirements.
Caution: Suitable for use on a circuit capable of delivering not more than the RMS symmetrical short circuit amperes
listed here at rated voltage (460VAC).
Rated Amperes RMS Symmetrical Amperes 30-142 10,000 175−300 18,000
370−470 25,000
570 30,000
720 35,000
840 42,000
Caution: Baldor recommends not using “Grounded Leg Delta” transformer power leads that may create ground loops.
Instead, we recommend using a four wire Wye power system.
Caution: Do not connect power factor correction capacitors to motor terminals. If power factor correction capacitors are
necessary, contact Baldor.
Caution: If a brake motor is used, the initial starting voltage may not be sufficient to release the brake. It is necessary to
provide separate power for the brake release coil.
Caution: Do not remove keypad cable with power applied to unit. Disconnecting the keypad cable with power applied will
damage the control.
Caution: If Service Settings parameters are changed the consequences can be malfunction but also damage to the Soft
Starter and the warranty may not be valid any longer.
Caution: Do not connect external power (voltage) source to Soft Starter terminals 4 through 11. Internal power is provided
to power external circuits. Connection of external power source can damage this soft starter.
Caution: ESD (Electro Static Discharge) can damage or reduce the life span of electronic devices. ESD procedures must
be followed whenever the covers of the device are removed. Failure to observe proper ESD procedures will
damage electronic devices and will not be covered by product warranty.
1.4 Receiving
Each Control Panel is thoroughly tested at the factory and carefully packaged for shipment.
When you receive your motor, there are several things you should do immediately.
1. Observe the condition of the shipping container and report any damage immediately to the commercial carrier that
delivered your motor.
2. Verify that the part number of the Control Panel you received is the same as the part number listed on your purchase
order.
1.5 Storage
NEMA 12/4 Enclosure
Storage Temperature: −22°F to 149°F (−30°C to 65°C)
Humidity: Less than 90% non condensing
1-2 Introduction
MN853
1.6 Quick Start
For the experienced user, this provides a short guide to mount, connect and operate the Soft Starter “Out of the Box” for a
standard installation. Detailed procedures are provided in the Installation Chapters of this manual. The quick start procedure
is as follows:
1. Read the Safety Notice and Precautions in this Chapter. If you do not understand a procedure, Do Not Proceed.
Immediately contact your Baldor District office for assistance.
2. Remove the control from the shipping box and mount the control. Refer to Chapter 3.
3. Connect AC power wires at L1, L2 and L3 ensuring source voltage matches soft starter voltage rating (Figure 2-1).
See wire and fuse size guidelines in Chapter 2. Tighten all connectors to proper rated torque values.
4. Verify control transformer (CCT) primary is properly connected for supply voltage, see Figure 2-6.
5. Connect the motor wires at T1, T2 and T3 ensuring motor is wired for same voltage as soft starter (Figure 2-1).
See wire and fuse size guidelines in Chapter 2. Tighten all connectors to proper rated torque values.
6. Connect ground wires of proper size at locations shown in (Figure 2-1). See wire and fuse size guidelines in Chapter 2.
Tighten all connectors to proper rated torque values.
7. Connect external Start/Stop Logic or control contact at terminals 1 & 2. See Figure 2-5 for terminal size and tightening
torque values. Tighten connectors to proper rated torque values.
CAUTION: After completing the installation but before you apply power, be sure to check the following electrical items:
1. Verify AC line voltage at source matches control rating.
2. Inspect all power connections for accuracy, workmanship and torques as well as compliance to codes.
3. Verify control and motor are grounded to each other and the control is connected to earth ground.
4. Check all control and signal wiring for accuracy.
WARNING: Improper operation of control may cause violent motion of the motor shaft and driven equipment. Be certain
that unexpected motor shaft movement will not cause injury to personnel or damage to equipment. Certain
failure modes of the control can produce peak torque of several times the rated motor torque.
1.7 Soft Starter program settings
Refer to MN852 for settings and operation procedures of the Soft Starter. Become familiar with the keypad programming
and keypad operation of the control as described in MN852.
The Soft Starter is factory set for “OPTIONAL HOA 2−Wire WIRING” (2−Wire Hand−Off−Auto Control Circuit Operation).
DO NOT CHANGE factory settings for Inputs, Relay Outputs, and Bypass Configuration.
1. Turn off all power to the combination starter.
2. Uncouple the motor from the load (including coupling or inertia wheels) to allow motor shaft to rotate freely.
3. Turn power on.
4. The green “Power on” LED is on and the LCD appears as in MN852 Figure 1−2.
The “Fault” LED must be off. If a fault is indicated, refer to MN852 Chapter 4 “Troubleshooting”.
5. Note the rotation direction of the motor shaft. Refer to Chapter 2 Phase Sequence Verification of this manual if rotation
direction is wrong.
6. Turn off line power to the control.
7. Couple the motor to the load (including coupling or inertia wheels).
8. At the main menu, select Menu/Settings/Application Settings and select the type of application to use.
DO NOT CHANGE factory settings for Inputs, Relay Outputs, and Bypass Configuration.
9. The Soft Starter is now ready for use.
MN853
Introduction 1-3
1-4 Introduction
MN853
Chapter 2
Installation
2.1 Mounting Location
The mounting location of the control panel is important. It should be installed in an area that is protected from direct
sunlight, corrosives, harmful gases or liquids, dust, metallic particles, and vibration.
Exposure to these elements can reduce the operating life and degrade performance.
Several other factors should be carefully evaluated when selecting a location for installation:
1. For effective cooling and maintenance, the control is mounted vertically a wall or on a level concrete pad or floor sills.
2. At least twelve inches clearance must be provided for enclosure sides that provide air convection and work clearance.
3. Front access must be provided to allow the panel to be opened or removed for service and to allow viewing of the
Keypad Display and control devices.
4. Altitude derating. Up to 3300 feet (1000 meters) no derating required. Above 3300 ft, derate the continuous and peak
output current by 2% for each 1000 ft.
5. Temperature derating. Up to 104°F(40°C) no derating required. Above 104°F(40°C), derate the continuous and peak
output current by 2% per °C. Maximum ambient is 130°F (55°C).
Physical Installation
The control must be securely fastened to the mounting surface (Wall or Floor).
Procedure Wall Mounted Enclosures:
1. Refer to Section 5 of this manual for drawings and dimensions for mounting.
2. Locate and drill four mounting holes for your enclosure.
3. Secure the enclosure using 3/8 Grade 5 or better carriage bolt, washer and nut.
Procedure Floor Mounted Enclosures:
1. Refer to Section 5 of this manual for drawings and dimensions for mounting.
2. Locate and drill holes four mounting holes in enclosure floor.
3. Vacuum and remove all metal shaving contamination.
4. Locate and drill four mounting holes in the floor.
5. Secure the enclosure to the floor using ½” Grade 5 or better floor anchor hardware.
Figure 2-1 Starter Diagram
L1
L2
Combination Starter
L3
Soft
Start
Control
Circuit
Breaker or
Fusible
Disconnect
GND
Earth
(PE)
Overload
Relay
1 2 3 4
GND
TB1
TB1 Customer Connections
Factory Connections:
TB1 1 & 2 Jumpered (Remote Permissive)
TB1 3 & 4 Open Circuit (Remote Start/Stop in AUTO mode)
2.2 AC Main Circuit
Be sure a suitable input power source is available. Proper branch circuit protection must be provided per NEC regulations.
2.3 Wire Size and Protection Devices
MN853
Installation 2-1
Table 2-1 Wire Size and Protection Devices - 600VAC Control Panels
*Catalog
Number
UL
Amps
Feeder
Breaker
Feeder Fuse Amps
AC Main Circuit
Recommended
Wire Size
Termination Lug Wire
Size Range
Termination Lug
Torque Value
Ground Lug
Wire
Size Range
Ground Lug
Torque Value
Fast
Acting
Time
Delay
AWG
mm2
AWG
mm2
lb-in
Nm
AWG
mm2
lb-in
Nm
Normal Starting (Class 10)
MST-050-GD
54
90
125
90
4
25
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-072-GD
68
90
150
110
4
25
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-085-GD
80
100
200
125
2
35
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-105-GD
104
150
300
175
1
42
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-142-GD
130
175
350
225
2/0
70
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-175-GD
156
200
450
250
3/0
95
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-210-GD
192
250
500
300
250
130
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-250-GD
248
300
700
400
2x3/0
2x95
2x3/0-250
2x95-125
274
31
14-2
2.5-35
50
5.6
MST-300-GD
302
350
900
500
2x3/0
2x95
2x3/0-250
2x95-125
274
31
14-2
2.5-35
50
5.6
MST-370-GD
361
500
1000
600
2x4/0
2x120
2x3/0-500
2x95-240
274
31
2-600
35-300 375
42
MST-470-GD
480
600
1400
850
2x350
2x185
2x3/0-500
2x95-240
274
31
2-600
35-300 375
42
Heavy Starting (Class 30)
MST-072-GD
54
90
125
90
4
25
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-085-GD
68
90
150
110
4
25
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-105-GD
80
100
200
125
2
35
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-142-GD
104
150
300
175
1
42
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-175-GD
130
175
350
225
2/0
70
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-210-GD
156
200
450
250
3/0
85
4-250
25-127
274
31
14-2
2.5-35
50
5.6
MST-250-GD
192
250
500
300
250
127
2x3/0-250
2x95-125
274
31
14-2
2.5-35
50
5.6
MST-300-GD
248
300
700
400
2x3/0
2x85
2x3/0-250
2x95-125
274
31
14-2
2.5-35
50
5.6
MST-370-GD
302
350
900
500
2x3/0
2x85
2x3/0-500
2x95-240
274
31
2-600
35-300 375
42
MST-470-GD
361
500
1000
600
2x4/0
2x107
2x3/0-500
2x95-240
274
31
2-600
35-300 375
42
MST-175-GS
130
175
350
225
2/0
70
4-250
25-125
274
31
14-2
2.5-35
5.6
MST-210-GS
156
200
450
250
3/0
95
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-250-GS
192
250
500
300
250
127
4-250
25-125
274
31
14-2
2.5-35
50
5.6
MST-300-GS
248
300
700
400
2x3/0
2x85
2x3/0-250
2x95-125
274
31
14-2
2.5-35
50
5.6
MST-370-GS
302
350
900
500
2x3/0
2x85
2x3/0-250
2x95-125
274
31
2-600
35-300 375
42
MST-470-GS
361
500
1000
600
2x4/0
2x107
2x3/0-500
2x95-240
274
31
2-600
35-300 375
42
MST-570-GS
480
600
1400
850
2x350
2x150
3x2/0-400
2x95-200
375
41
2-600
35-300 375
42
MST-720-GS
590
800
1700
1000
2x500
2x253
4x4/0-500
2x95-240
380
43
2-600
35-300 375
42
MST-840-GS
720
900
2100
1250
3X350
3x150
4x4/0-500
2x95-240
380
43
2-600
35-300 375
42
50
Note: All wire sizes based on 75°C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be used per
NEC and local codes. Recommended fuses/breakers are based on 25°C ambient, maximum continuous control output
current and no harmonic current.
*
MST−720−GS and MST−840−GS are only available in 230VAC and 460VAC versions.
2-2 Installation
MN853
Table 2-2 Wire Size Motor Lead Termination - 230 VAC Control Panels
*Catalog
Number
UL
Amps
Max.
Power
HP
Motor Connections
Recommended
Wire Size
Termination Lug Wire
Size Range
Termination
Lug Torque
Value
Ground Lug Wire
Size Range
Ground Lug
Torque Value
AWG
mm2
AWG
mm2
lb-in
Nm
AWG
mm2
lb-in
Nm
Normal Starting (Class 10)
MST-050-GD
54
20
4
25
8-4
10-25
20.3
2.3
14-2
2.5-35
50
5.6
MST-072-GD
68
25
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
80
30
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
104
40
1
50
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
130
50
2/0
70
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
156
60
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
192
75
250
130
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
248
100
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
302
100
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
361
150
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
480
200
2x350
2x185
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
Heavy Starting (Class 30)
MST-072-GD
54
20
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
68
25
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
80
30
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
104
40
1
50
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
130
50
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
156
60
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
192
75
250
130
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
248
100
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
302
100
2x3/0
2x95
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
361
150
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-175-GS
130
50
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GS
156
210
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GS
192
75
250
130
4-400
25-200
375
42
14-2
2.5-35
50
5.6
MST-300-GS
248
100
2x3/0
2x95
2x4-500
2x25-253
375
42
14-2
2.5-35
50
5.6
MST-370-GS
302
100
2x3/0
2x95
2x4-500
2x25-253
375
42
2-600
35-300
375
42
MST-470-GS
361
150
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-570-GS
480
200
2x350
2x185
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-720-GS
590
250
2x500
2x240
3x2/0-500
3x70-240
375
42
2-600
35-300
375
42
MST-840-GS
720
300
3X350
2x185
3x2/0-500
3x70-240
375
42
2-600
35-300
375
42
Note: All wire sizes based on 75°C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be used per
NEC and local codes. Recommended fuses/breakers are based on 25°C ambient, maximum continuous control output
current and no harmonic current.
*
MST−720−GS and MST−840−GS are only available in 230VAC and 460VAC versions.
MN853
Installation 2-3
Table 2-3 Wire Size Motor Lead Termination - 460 VAC Control Panels
*Catalog
Number
UL
Amps
Max.
Power
HP
Motor Connections
Recommended
Wire Size
Termination Lug Wire
Size Range
Termination
Lug Torque
Value
Ground Lug Wire
Size Range
Ground Lug
Torque Value
AWG
mm2
AWG
mm2
lb-in
Nm
AWG
mm2
lb-in
Nm
Normal Starting (Class 10)
MST-050-GD
54
40
4
25
8-4
10-25
20.3
2.3
14-2
2.5-35
50
5.6
MST-072-GD
68
50
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
80
60
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
104
75
1
50
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
130
100
2/0
70
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
156
125
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
192
150
250
130
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
248
200
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
302
250
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
361
300
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
480
400
2x350
2x185
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
Heavy Starting (Class 30)
MST-072-GD
54
40
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
68
50
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
80
60
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
104
75
1
50
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
130
100
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
156
125
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
192
150
250
130
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
248
200
2x3/0
2x95
2x4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
302
250
2x3/0
2x95
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
361
300
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-175-GS
130
100
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GS
156
125
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GS
192
150
250
130
4-400
25-200
375
42
14-2
2.5-35
50
5.6
MST-300-GS
248
200
2x3/0
2x95
2x4-500
2x25-253
375
42
14-2
2.5-35
50
5.6
MST-370-GS
302
250
2x3/0
2x95
2x4-500
2x25-253
375
42
2-600
35-300
375
42
MST-470-GS
361
300
2x4/0
2x120
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-570-GS
480
400
2x350
2x185
2x2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-720-GS
590
500
2x500
2x240
3x2/0-500
3x70-240
375
42
2-600
35-300
375
42
MST-840-GS
720
600
3X350
2x185
3x2/0-500
3x70-240
375
42
2-600
35-300
375
42
Note: All wire sizes based on 75°C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be used per
NEC and local codes. Recommended fuses/breakers are based on 25°C ambient, maximum continuous control output
current and no harmonic current.
*
MST−720−GS and MST−840−GS are only available in 230VAC and 460VAC versions.
2-4 Installation
MN853
Table 2-4 Wire Size Motor Lead Termination - 575 VAC Control Panels
Catalog
Number
UL
Amps
Max.
Power
HP
Motor Connections
Recommended
Wire Size
Termination Lug Wire
Size Range
Termination
Lug Torque
Value
Ground Lug Wire
Size Range
Ground Lug
Torque Value
AWG
mm2
AWG
mm2
lb-in
Nm
AWG
mm2
lb-in
Nm
Normal Starting (Class 10)
MST-050-GD
54
50
4
25
8-4
10-25
20.3
2.3
14-2
2.5-35
50
5.6
MST-072-GD
68
60
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
80
75
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
104
100
1
50
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
130
125
2/0
70
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
156
150
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
192
200
250
130
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
248
250
2x3/0
2x95
(2) 4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
302
300
2x3/0
2x95
(2) 4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
361
350
2x4/0
2x120
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
480
500
2x350
2x185
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
Heavy Starting (Class 30)
MST-072-GD
54
50
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-085-GD
68
60
4
25
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-105-GD
80
75
2
35
10-2
6-35
35.4
4
14-2
2.5-35
50
5.6
MST-142-GD
104
100
1
50
8-1
10-50
53
6
14-2
2.5-35
50
5.6
MST-175-GD
130
125
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GD
156
150
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GD
192
200
250
130
(2) 4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-300-GD
248
250
2x3/0
2x95
(2) 4-500
2x25-240
375
42
14-2
2.5-35
50
5.6
MST-370-GD
302
300
2x3/0
2x95
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-470-GD
361
350
2x4/0
2x120
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-175-GS
130
125
2/0
70
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-210-GS
156
150
3/0
95
6-300
16-150
300
34
14-2
2.5-35
50
5.6
MST-250-GS
192
200
250
130
4-400
25-200
375
42
14-2
2.5-35
50
5.6
MST-300-GS
248
250
2x3/0
2x95
(2) 4-500
2x25-253
375
42
14-2
2.5-35
50
5.6
MST-370-GS
302
300
2x3/0
2x95
(2) 4-500
2x25-253
375
42
2-600
35-300
375
42
MST-470-GS
361
350
2x4/0
2x120
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
MST-570-GS
480
570
2x350
2x185
(2) 2/0-500
2x70-240
275
31
2-600
35-300
375
42
Note: All wire sizes based on 75°C copper wire, 3% line impedance. Higher temperature smaller gauge wire may be used per
NEC and local codes. Recommended fuses/breakers are based on 25°C ambient, maximum continuous control output
current and no harmonic current.
MN853
Installation 2-5
2.4 Electrical Connections
Use Table 2-1 to select the correct size Supply Wire for your application.
Use Tables 2-2, 2-3 and 2-4 to select the correct size Motor Lead Wire for your application.
1. Connect Supply wires L1, L2, L3 and GND. Be sure the wire is correct size and rating.
Tighten each terminal to the correct torque. Figure 2-2.
2. Connect Motor Leads T1, T2, T3 and GND. Be sure the wire is correct size and rating.
Tighten each terminal to the correct torque. Figure 2-2.
Figure 2-2 AC Power And Motor Connections
GND L1 L2 L3
ON
Circuit
Breaker
OFF
Motor Circuit Protector
Motor Lead
Terminals
GND T1 T2 T3
2.5 Phase Sequence Verification
The Soft−Start is sensitive to the phase sequence of the input power. If motor rotation direction is opposite the desired
rotation, perform the following procedure: (refer to Figure 2-3)
1. Turn power on and observe direction of motor rotation. If rotation direction is correct, do not perform the following steps.
If rotation direction is wrong, proceed to step 2.
2. Disconnect all power to the control panel.
3. Reverse the phase sequence (and motor rotation direction) by changing the L1 and L2 connections to the Motor Circuit
Protector.
a. Remove and label the L1 and L2 wires at the Motor Circuit Protection breaker (see Figure 2-3 normal connection).
b. Connect the wire labeled L1 to the L2 input of the Motor Circuit Protection breaker (see Figure 2-3 reversed
connection).
c. Connect the wire labeled L2 to the L1 input of the Motor Circuit Protection breaker (see Figure 2-3 reversed
connection).
d. Remove temporary labeling from L1 and L2.
4. Apply power and verify correct motor rotation direction.
Figure 2-3 Reverse Phase Sequence
L1 L2 L3
L2 L1 L3
ON
ON
Circuit
Breaker
OFF
(Normal Connection)
2-6 Installation
Circuit
Breaker
OFF
(Reversed Connection)
MN853
2.6 Space Heater Optional
Each Combination Starter MST Digital Soft−Start includes a built−in space heater. This increases the cooling requirements
by 100watts. If your combination starter is to be used indoors, this space heater may be disconnected to save energy. It is
intended to provide a small amount of heat to prevent condensation when temperature and humidity conditions are less than
optimal.
1. Disconnect all power to the control panel.
2. Remove the “L” wire from the space heater (Figure 2-4).
3. Cut off the exposed copper wire.
4. Install a wire nut on the insulated wire and tape to prevent the wire from contact with another device. The wire may be
reattached if the space heater is needed.
Figure 2-4 Space Heater Connections
2.7 TB1 Remote Control Device
Figure 2-5 TB1 Remote Control Device Connections
TB1
1
2
Remote
Permissive
3
4
Auto
Start/Stop
Factory terminations are on “insulation
displacement” Push-in type terminals.
DO NOT rewire or add wires to this side .
Customer Connections.
Factory jumpers may be removed and
connections made.
Notes:
Customer Connections:
TB1 1 & 2 Jumpered (Remote Permissive)
TB1 3 & 4 Open Circuit (Remote Start/Stop
in AUTO mode)
Use 12-18AWG (2-4mm 2 )
Torque to 4.4-7 lb-in (0.5-0.8Nm)
2.8 Control Circuit Transformer (CCT)
Figure 2-6 Control Circuit Transformer with Fuses
CONNECTION DIAGRAM:
L1
L2
Factory Connections:
Primary side 460V connection.
Move factory installed wire with Warning Tag
from 460V (H2) terminal to 230V (H3) or
575V (H1) to match line voltage.
230V 0V
575v
H1=575VAC
H2=460VAC
H3=230VAC
H4=0VAC
MN853
WARNING TAG
460v
Installation 2-7
2.9 Connection Diagrams
Figure 2-7 Connection Diagram − MST−050−GD through MST−300−GD
Note 1
H4
H3
H2
H1
Note 3
120VAC
GND
POWER ON
W
X1
GND
X2
RUN
K4
13
G
X1
14
X2
SPACE HEATER
L
12
N
GND
SHUNT-TRIP
K6
19
20
Off
Hand
Note 2
Auto
23
24
13
14
Note 4
GND
Note 2
K5
16
17
Surge suppressor
built-into AF
series contractor.
SS1
BYP
A1
A2
Notes:
1. Refer to CCT label (Figure 2‐6) connect transformer primary taps for proper line voltage.
2. MST Factory Settings:
INPUT In0 = Reset Fault/OL
RELAY K4 = RUN
RELAY K5 = TOR
RELAY K6 = SHUNT-TRIP
MOT 1 Ie = MOTOR FLA
Int BYPASS = NO
EXT BYPASS = YES
3. For remote shutdown, disable
4. Use Normally Open Maintained Dry Relay Contact for Automatic Start/Stop operation.
LEGEND:
CCT
CHFU
CXFU
PTC
BYP
13
2-8 Installation
Control Circuit Transformer
CCT Primary Fuse
CCT Secondary Fuse
Thermistor
Bypass Contactor
Connection point on device with number
Connection point at terminal block
MN853
Figure 2-8 Connection Diagram − MST−370−GD through MST−470−GD
Note 1
H4
H3
H2
H1
Note 3
120VAC
GND
POWER ON
W
X1
GND
X2
RUN
K4
13
G
X1
14
X2
SPACE HEATER
L
12
N
GND
SHUNT-TRIP
K6
19
20
Off
Hand
Auto
23
24
13
14
Note 2
Note 4
GND
Note 2
Surge suppressor
built-into AF
series contractor.
SS1
BYP
A1
A2
Notes:
1. Refer to CCT label (Figure 2‐6) and connect transformer primary taps for proper line voltage.
2. MST Factory Settings:
INPUT In0 = Reset Fault/OL
RELAY K4 = RUN
RELAY K5 = TOR
RELAY K6 = SHUNT-TRIP
MOT 1 Ie = MOTOR FLA
Int BYPASS = YES
EXT BYPASS = NO
3. For remote shutdown, disable
4. Use Normally Open Maintained Dry Relay Contact for Automatic Start/Stop operation.
LEGEND:
CCT
CHFU
CXFU
PTC
BYP
13
MN853
Control Circuit Transformer
CCT Primary Fuse
CCT Secondary Fuse
Thermistor
Bypass Contactor
Connection point on device with number
Connection point at terminal block
Installation 2-9
Figure 2-9 Connection Diagram − MST−175−GS through MST−300−GS
Note 1
H4
H3
H2
H1
Note 3
120VAC
GND
POWER ON
W
X1
X2
RUN
K4
13
G
X1
14
X2
SPACE HEATER
L
12
N
GND
SHUNT-TRIP
K6
19
20
Off
Hand
Auto
OLX
3
4
1
9
Note 2
23
24
13
14
Note 4
GND
Note 2
K5
16
17
Surge suppressor
built-into AF
series contractor.
SS1
BYP
Norm
1
E-BYP
2
A1
OL
95
97
OL
96
98
A2
SS2
OLX
13
14
Notes:
1. Refer to CCT label (Figure 2‐6) and connect transformer primary taps for proper line
voltage.
2. MST Factory Settings:
INPUT In0 = Reset Fault/OL
RELAY K4 = RUN
RELAY K5 = TOR
RELAY K6 = SHUNT-TRIP
MOT 1 Ie = MOTOR FLA
Int BYPASS = NO
EXT BYPASS = YES
3. For remote shutdown, disable
4. Use Normally Open Maintained Dry Relay Contact for Automatic Start/Stop operation.
LEGEND:
CCT
CHFU
CXFU
PTC
BYP
13
2-10 Installation
Control Circuit Transformer
CCT Primary Fuse
CCT Secondary Fuse
Thermistor
Bypass Contactor
Connection point on device with number
Connection point at terminal block
MN853
Figure 2-10 Connection Diagram − MST−370−GS through MST−840−GS
Note 1
H4
H3
H2
H1
Note 3
120VAC
BYP
GND
POWER ON
13
RUN
L
12
N
GND
SHUNT-TRIP
K6
20
Off
Hand
Auto
OLX
3
X2
G
X1
X2
SPACE HEATER
14
19
W
X1
K4
4
1
9
Note 2
23
24
13
14
Note 4
Surge suppressor
built-into AF
series contractor.
Norm
1
E-BYP
2
SS1
BYP
OL
95
96
A1
SS2
OLX
OL
97
A2
98
13
14
Notes:
1. Refer to CCT label (Figure 2‐6) and connect transformer primary taps for proper line
voltage.
2. MST Factory Settings:
INPUT In0 = Reset Fault/OL
RELAY K4 = RUN
RELAY K5 = TOR
RELAY K6 = SHUNT-TRIP
MOT 1 Ie = MOTOR FLA
Int BYPASS = YES
EXT BYPASS = NO
3. For remote shutdown, disable
4. Use Normally Open Maintained Dry Relay Contact for Automatic Start/Stop operation.
LEGEND:
CCT
CHFU
CXFU
PTC
BYP
13
MN853
Control Circuit Transformer
CCT Primary Fuse
CCT Secondary Fuse
Thermistor
Bypass Contactor
Connection point on device with number
Connection point at terminal block
Installation 2-11
2-12 Installation
MN853
Chapter 3
Adjustments
3.1 Circuit Breaker Adjustment
3.1.1 Inrush current (estimation)
Note: Models MST−050−GD through MST−370−GD include fixed thermal magnetic circuit breaker, no adjustment required.
Models MST−470−GS through MST−840−GS include LSI trip unit with adjustable 1) Long Delay, 2) Short Delay and
3) Instantaneous trip functions.
Mechanical adjustment of the trip setting may be necessary for proper circuit breaker protection. The first step of this
adjustment procedure is to determine the motor inrush current (in amperes). Inrush current is also called “Locked Rotor
AMPS” or “LRA”, or starting current. If not given in motor performance data or on the motor nameplate, the inrush current is
determined by motor horsepower and motor design characteristics. To define inrush characteristics, code letters are used.
This code letter defines both the low voltage and high voltage inrush values for dual voltage motors.
Table 3-1 shows these code letters.
(KVA = Kilovolt-Amperes; HP = Horsepower).
3.1.2 Motor KVA/HP Calculation
Table 3-1 Code Letter Definition
Code Letter
KVA/HP Range
KVA/HP
Mid-Range Value
A
0.00 - 3.14
1.6
B
3.15 - 3.54
3.3
C
3.55 - 3.99
3.8
D
4.00 - 4.49
4.3
E
4.50 - 4.99
4.7
F
5.00 - 5.59
5.3
G
5.60 - 6.29
5.9
H
6.30 - 7.09
6.7
J
7.10 - 7.99
7.5
K
8.00 - 8.99
8.5
L
9.00 - 9.99
9.5
M
10.00 - 11.19
10.6
N
11.20 - 12.49
11.8
P
12.50 - 13.99
13.2
R
14.00 - 15.99
15.0
3 Phase Inrush Current Calculation (Use mid range value for KVA/HP)
Inrush AMPS
HP
KVA
mid range value
x HP x 577
Rated Volts
Example: 3 phase Motor rated at 50 HP at 460VAC, 65 amps (continuous), code letter J.
I Inrush
MN853
7.5 x 50 x 577
460
470 Amperes
Adjustments 3-1
3.2 Electronic Trip Units
3.2.1 Overload Protection (L)
Protection against overloads (long time delay trip function) is identified by Function L. If the fault current exceeds the set
threshold I1, this protection trips according to an inverse time characteristic, where the link time-current is represented by the
relation I2t = K (constant let-through energy); with this curve, the tripping time decreases as the current increases.
3.2.2 Short Circuit Protection with Delayed Trip (S)
Protection against short circuit with time delay trip (short time delay trip function) is identified by Function S.
If the fault current exceeds the set threshold I2, the protection trips with the following characteristic:
• with inverse time according to the relation I2t = K:
with this curve, the highest the fault current is, the shortest is the trip time;
or
• with constant time delay according to the relation t = K:
with this curve the trip time is independent of the current.
I2 represents the adjustable value of the protection trip threshold called short time pickup. This protection can be excluded.
3.2.3 Instantaneous Short Circuit Protection (I)
The instantaneous protection against short circuit (instantaneous trip function) is identified by Function I. If the fault current
exceeds the set threshold value I3, the protection actuates the instantaneous opening of the circuit breaker.
I3 represents the adjustable value of the trip threshold of the protection, called instantaneous pickup setting. If function I is
excluded, in case of a short-circuit, the release mechanism will trip at the instantaneous override of the circuit breaker.
Procedure
The calculated Inrush Amps value is used to initially set the breaker. If the circuit breaker trips during use, the trip level is
increased. Refer to Figure 4-1.
Caution: The trip level of the circuit breaker must remain as low as possible to avoid damage to equipment.
If set too high, the circuit breaker may not trip during a high overcurrent condition.
1. Refer Electronic Trip Unit description in this Section. Become familiar with the adjustments “L”, “S” and “I”.
2. Turn on power and start the motor.
3. If the breaker trips, Turn power off and set the Trip Level to the next greater setting.
4. Turn on power and start the motor.
5. If the breaker trips, repeat steps 3 and 4. If the Trip Level adjustment is at the maximum setting and you have verified
there is no phase to phase or phase to ground shorts, perform step 6. Otherwise, refer to Chapter 5 Troubleshooting.
6. If the breaker continues to trip due to inrush current (and not a short circuit) the Rating Plug may be replaced with one
that has a greater current rating. Refer to the circuit breaker manufacturers information and ratings.
3-2 Adjustments
MN853
Figure 3-1 Electronic Trip Units
S
I2t
OFF
I2t ON
I
I1
I2
I3
In
T2 is delay time for overcurrent trip.
S5=S6=Off=0.05 second delay
S5=S6=On=0.50 second delay
ON
Tripped
0
0
0
0
S1 S2 S3 S4
0.05sec
0.10sec
0.25sec
0.50sec
t2
S5 S6 S7
S7 = I2t Protection (On/Off)
Recommended setting
I2 = 105% of locked rotor current
I3 = Short Circuit Protection Level
I3 = In (S1+S2+S3+S4)
Example: In = 400A
S1=S2=Off
S3=S4=On
0
Where:
In = Nominal rating of Electronic Trip Unit
I1 = Branch Circuit Overload Protection Level
I2 = Locked Rotor Protection Level
I3 = Short Circuit Protection Level
I2 = In (S1+S2+S3+S4)
Example: In = 400A
S1=S2=S3=Off
S4=On
I2 = In (0+0+0+5.8)
I2 = 400A (5.8) =2320A
The breaker will trip when current reaches
2320Amps after t2 seconds.
0
Theoretical Curves
L
I3 = 400A (8) =3200A
The breaker will trip when motor current
reaches 3200Amps.
Recommended setting
S1 = S2 = S3 = OFF
S4 = ON
I3 = In x 5
0
time
I2 = Locked Rotor Protection Level
0
Protection Functions “L”, “S” and “I”
S6 S7
0
L S I
L − May not be excluded (turned OFF).
S − May be excluded.
I − May be excluded.
T1 is delay time for overcurrent trip.
S6=S7=Off=3 second delay
S6=S7=On = MAX
Recommended setting
I1 = 125% motor full load current
t1
3sec
6sec
9sec
Max
0
Electronic
Trip Units
S1 S2 S3 S4 S5
0
Test
I1 = In (0.4+S1+S2+S3+S4+S5)
Example: In = 400A
S1=S2=S3=S5=Off
S4=On
I1 = In (0.4+0+0+0+0.16+0)
I1 = 400A (0.56) =224A
The breaker will trip when current reaches
224Amps after t1 seconds.
0
Handle
I1 = Branch Circuit Overload Protection Level
0
Note: Actual trip unit text will vary for
each breaker size. This example is
shown for reference only.
S1 S2 S3 S4
OFF
Reset
MN853
Adjustments 3-3
Figure 3-2 T ypical Motor Starting Current and Trip Unit Settings
Time
(Long delay for branch circuit overload)
100% In
t1
Typical 3 segment LSI Trip Curve (Branch Circuit Protection)
Typical Motor Starting Curve (Motor Current)
(Short delay for locked rotor)
t2
(Instantaneous for short circuit)
Current
IFL
3-4 Adjustments
I1
IAV
I2
I3
ISP
IFL = rated motor service current (Full Load Amps)
IAV = motor starting current (average of Locked Rotor Current)
ISP = peak value of the sub-transient motor starting current
MN853
3.3 Overload Relay Adjustments
The overload relay is shown in Figure 3-3.
Figure 3-3 Overload Relay
Reset
Trip Class
Setting
In Stop
T1 T2 T 3
97
95
98
96
Test
1. Adjust In to the rated current of the motor.
2. Reset: Rotate control to the MAN (Manual) or AUTO (Automatic) position.
Manual: Depress to manually reset the overload relay.
Automatic: Overload is reset automatically.
3. Set the Trip Setting Class to the correct trip class. Settings are: 10E, 20E and 30E.
4. Press Test to momentarily activate the relay. 95−96 Opens; 97−98 Closes.
5. Press Stop to open 95−96 and terminate motor operation.
MN853
Adjustments 3-5
3-6 Adjustments
MN853
Chapter 4
Troubleshooting
The control panel is intended to provide years of trouble free service with appropriate cooling and
protection from the elements. Should trouble occur, refer to the appropriate control manual for control
and motor troubleshooting information. Refer to MN852 for Soft−Starter troubleshooting.
4.1 Reset the Circuit Breaker
If the circuit breaker is tripped, it must be reset to restore power. The breaker is tripped if the handle is in the “Tripped”
position as indicated in Figure 4-1.
Before the breaker is reset, locate the source of electrical trouble.
1. Check for phase-to-phase and phase-to-ground shorts.
2. Check for loose connections at power connectors (L1, L2, L3 and Earth as well as T1, T2, T3 and Motor Ground).
3. If all checks in steps 1 and 2 are OK, move the breaker handle all the way down to the “Reset” position then move the
handle to the “ON” position to restore power. (In the “Reset” position, a click sound will be heard.)
4. Verify that the inrush current in the “Emergency Bypass” mode does not trip the breaker.
If the breaker continues to trip and the Trip Level has been adjusted as described in Section 3, the breaker is defective
and must be replaced. When the new breaker is installed, be sure to refer to Section 3 and perform the Circuit Breaker
Adjustment procedure.
Figure 4-1 Circuit Breaker
ON
Tripped
Handle
Test
Electronic
Trip Units
MN853
OFF
Reset
Troubleshooting 4-1
4.2 Reset an Overload Relay
If the Overload relay is tripped, perform the following:
1. Verify that the overload condition has been cleared to allow restart.
2. Verify motor lead connections are tight.
3. Allow time for the overload bi-metallic elements to cool.
4. Press the “Reset Button” (Figure 4-2). If the “Auto/Manual Reset Bar” is in the AUTO position, the relay will automatically
attempt to restart after an overload.
Figure 4-2 Overload Relay
Reset
Trip Class
Setting
In Stop
Test
4.1 Fuse Replacement
If the control circuit voltage drops to zero volts, the control power transformer fuses (Figure 4-3) should be inspected. If a
fuse is opened, perform the following steps:
1. Check for line-to-ground short circuit condition and repair if necessary.
2. Check control wiring and control devices (timers, relays, terminal blocks, wire terminations, etc.) for signs of damage,
overheating, or loose connections and repair if necessary.
3. Disconnect all power to the starter.
4. Replace the fuse with the same fuse class, type and rating (interrupting capacity).
5. Restore power.
Figure 4-3 Control Transformer with Fuses
4-2 Troubleshooting
MN853
Chapter 5
Specifications and Product Data
5.1 Catalog Number Identification
MST - 105 - CA
Controlled ramp start and stop digital-soft start
Class 10 Normal Starting
Current Rating (UL)
030=28A
037=34A
044=42A
050=54A
072=68A
085=80A
105=104A
142=130A
175=156A
210=192A
250=248A
300=302A
370=361A
470=480A
570=590A
Refer to Tables
720=720A
840=840A
Enclosure:
CA=Open Chassis
GD=NEMA Type 12/4 Combination Starter with Disconnect
GS= Severe Duty NEMA 4 Combination Starter with Circuit Breaker Disconnect
Table 5-1 Features
Output
Overload
Input Ratings
Control Spec
SCR Spec
Voltage (Ue)
208-460V, 230-575V
Current (Ie)
30-1040A
Horsepower
Voltage and application rated, 7.5 Hp @ 208V to 1000 Hp @ 600V
Short Circuit
Size dependent 10 kA (30A) to 85 kA (1040A)
Altitude Derate
0.7% per 330 feet above 3300 feet
Temperature Derate
0.8% per one °C above 40°C up to 50°C
Starts per Hour
MST-030 - MST-300 – 30 starts; MST-370 - MST-1050 – 10 starts (50% on / 50% off time)
Normal Duty
400% of motor current for 30 seconds starting capacity and Class 10 moor running protection
Heavy Duty
350-400% of motor current for 60 seconds starting capacity and Class 30 motor running protection
Voltage
208 - 575V
Frequency
50/60 Hz
Phase
Three Phase
Control Method
Microprocessor controlled full wave, three phase, six thyristor firing
Start Time
Programmable 1-30 seconds, (Normal Range) 1-120 seconds (Heavy Duty Range)
Stop Time
Programmable 0-255 seconds
Voltage Pedestal
Programmable: Start 10-60%, Kick 60-90%, Stop 10-60%
Current Limit
800% of rated current
Power Factor
Continuously monitored to eliminate motor over-flux for power optimizing
Control Power (Us)
110-130VAC, 50/60 Hz
Peak Inverse Voltage
460VAC controllers 1400V
575VAC controllers 1600V
Ambient Conditions
Tools
MN853
Heat Loss
3.3 Watts per 1 Ampere running current
Temperature
Storage: -13°F to 158°F (-25°C to +70°C) operation; 32°F to 104°F (0°C to +40°C)
Cooling
Convection / Forced Air included / Additional cooling required when installed in enclosure
Altitude
3300 feet above sea level
Simulator
Windows® based application tool for programming simulation and settings navigation learning
Sizing ProSoft
Windows® based starter selection tool with Baldor motor information to aim with proper rating choice for starter and motor
Specifications and Product Data 5-1
Table 5-2 Power Ratings and Enclosure Size
Catalog
Number
UL Amps
HP
Enclosure
230V
460V
575V
Size
Ship
Weight
Normal Starting (Class 10)
MST-050-GD
54
20
40
50
A
70
MST-072-GD
68
25
50
60
A
72
MST-085-GD
80
30
60
75
B
105
MST-105-GD
104
40
75
100
B
110
MST-142-GD
130
50
100
125
B
118
MST-175-GD
156
60
125
150
C
210
MST-210-GD
192
75
150
200
C
226
MST-250-GD
248
100
200
250
C
230
MST-300-GD
302
100
250
300
C
240
MST-370-GD
361
150
300
350
D
343
MST-470-GD
480
200
400
500
D
352
Heavy Starting (Class 30)
MST-072-GD
54
20
40
50
A
72
MST-085-GD
68
25
50
60
B
105
MST-105-GD
80
30
60
75
B
110
MST-142-GD
104
40
75
100
B
118
MST-175-GD
130
50
100
125
C
210
MST-210-GD
156
60
125
150
C
226
MST-250-GD
192
75
150
200
C
230
MST-300-GD
248
100
200
250
C
240
MST-370-GD
302
100
250
300
D
343
MST-470-GD
361
150
300
350
D
352
MST-175-GS
130
50
100
125
C
223
MST-210-GS
156
210
125
150
C
228
MST-250-GS
192
75
150
200
C
237
MST-300-GS
248
100
200
250
C
244
MST-370-GS
302
100
250
300
D
373
MST-470-GS
361
150
300
350
D
399
MST-570-GS
480
200
400
570
E
649
MST-720-GS
590
250
500
E
681
MST-840-GS
720
300
600
E
687
*
MST−720−GS and MST−840−GS are only available in 230VAC and 460VAC versions.
5-2 Specifications and Product Data
MN853
5.2 Ratings
5.2.1 Wall Mount Enclosures
B
C
B1
C1
A1
A
Xf
Mounting Hole (Qty 4)
located inside the
enclosure on back wall.
Xt
Xl
Xr
A1
A
B1
Note 1
B
Xb
Mounting Hole (Qty 4) located
outside the enclosure as shown.
Size A, B, and C
Size D
Table 5-3 Dimensions
Enclosure
Size
Dimensions
A
A1
B
B1
C
C1
Clearance (minimum)
Xl (left)
Xr (right)
Xt (top)
Xb bottom)
Xf (front)
A
20.00
18.5
20.00
18.5
12.78
14.55
3
3
12
12
36
B
24.00
22.5
24.00
22.5
12.80
14.57
3
3
12
12
36
C
36.00
34.5
36.00
34.5
12.76
14.54
3
3
12
12
42
D
60.00
61.2
36.00
30.00
17.31
19.08
3
3
12
12
42
Note 1: Apply seal to mounting hole in the back of the enclosure to prevent dust, debris or liquid entry.
MN853
Specifications and Product Data 5-3
5.2.2 Floor Mount Enclosure
C1
C
A1
B1
Xf
Mounting Hole (Qty 4)
locate and drill in floor plate
of the enclosure.
B
Xt
Xl
Xr
A
Table 5-4 Dimensions
Enclosure
Size
E
Dimensions
Clearance (minimum)
A
A1
B
B1
C
C1
Xl (left)
Xr (right)
Xt (top)
Xb bottom)
Xf (front)
72.06
68.00
37.06
33.00
25.22
26.99
3
3
12
3
42
5-4 Specifications and Product Data
MN853
Chapter 6
Parameter Descriptions
6.1 Settings
Settings can be done in three different ways:
• Keypad
• External keypad (option)
With the keypad, settings can be done as individual parameter setting or selection of predefined parameters for different
applications.
The unit has one complete set of parameters but some parameters have extra sets for sequence start. The default
parameter set is stored in the unit for a possible reset to default values.
WARNING: Improper operation of control may cause violent motion of the motor shaft and driven equipment. Be certain
that unexpected motor shaft movement will not cause injury to personnel or damage to equipment. Certain
failure modes of the control can produce peak torque of several times the rated motor torque.
The motor may start unexpectedly if there is a start signal present when doing any of these actions.
• Switching from one type of control to another (hardwire control)
• Re-programming of the programmable inputs
• Reset all Settings (programmable input set to Enable)
6.1.1 Overview of all accessible settings (various menus)
Table 6-1 Settings
Setting/parameter
Top level
Password
X
Keypad lock/unlock
X
Application
Setting
Basic
Settings
Functional
Settings
Presentation
Settings
All Settings
Reset to factory default
setting
X
Application type
X
Setting current
X
X
X
X
Overload protection class
X
X
X
X
External by-pass
X
X
X
X
Start mode
Tune Set
X
X
X
Stop mode
Tune Set
X
X
X
Start ramp
Tune Set
X
X
X
Stop ramp
Tune Set
X
X
X
Initial voltage
Tune Set
X
X
X
End voltage
Tune Set
X
X
X
Step down voltage
Tune Set
X
X
X
Current limit
Tune Set
X
X
X
Torque limit
Tune Set
X
X
X
Kick start
X
X
Kick start level
X
X
Kick start time
X
X
Start ramp range
X
X
Stop ramp range
X
X
Tune torque control
X
X
Overload protection type
X
X
Overload protection, dual
type, start class
X
X
Overload protection, dual
type, run class
X=Yes, Accessible
X
X
MN853
Reset all
Settings
Parameter Descriptions 6-1
Setting/parameter
Top level
Application
Setting
Basic
Settings
Functional
Settings
Presentation
Settings
All Settings
Overload protection, type
of operation
X
X
Locked rotor protection
X
X
Locked rotor protection
level
X
X
Locked rotor protection
time
X
X
Locked rotor protection,
type of operation
X
X
Underload protection
X
X
Underload protection level
X
X
Underload protection time
X
X
Underload protection, type
of operation
X
X
Phase imbalance
protection
X
X
Phase imbalance
protection level
X
X
Phase imbalance
protection, type of
operation
X
X
High current protection
X
X
High current protection,
type of operation
X
X
Phase reversal protection
X
X
Phase reversal protection,
type of operation
X
X
PTC protection
X
X
PTC protection, type of
operation
X
X
High current warning
X
X
High current warning level
X
X
Low current warning
X
X
Low current warning level
X
X
Overload warning
X
X
Overload warning level
X
X
Thyristor (SCR) overload
warning
X
X
Phase loss fault, type of
operation
X
X
Frequency fault, type of
operation
X
X
Heat sink over-temperature
fault, type of operation
X
X
Thyristor short circuit fault,
type of operation
X=Yes, Accessible
X
X
6-2 Parameter Descriptions
Reset all
Settings
MN853
MN853
Parameter Descriptions 6-3
6-4 Parameter Descriptions
MN853
MN853
Parameter Descriptions 6-5
6-6 Parameter Descriptions
MN853
Chapter 7
Troubleshooting
7.1 General
This chapter is a guide that can be used in case problems arise with the softstarter or the application.
The softstarter normally indicates a fault with LED Fault, and the LCD displays what type of fault it is.
When a protection is activated, it will be indicated with LED Protection and the LCD displays what type of protection is
active. Faults not displayed in the softstarter can also be found in this chapter.
7.2 Overview of indications
This table shows in which state the different indications for protections, faults and warning may show up.
Fault Line Side
Fault HS Temp
–
–
–
–
X
At start signal
X
–
–
X
–
X
X
X
X
X
X
X
X
Ramp up
X
–
–
X
–
–
X
X
X
–
–
–
TOR
X
X
X
X
X
–
X
X
X
–
–
At stop signal
X
–
–
X
–
–
X
X
X
–
Ramp down
X
–
–
X
–
–
X
X
X
–
1) Only if by-pass is not used.
2) Only if Kick-start is selected.
3) Only if by-pass is used.
7.1 General problems and faults
–
–
X1
–
–
X
X
–
–
X
–
X1
–
–
X
X
–
–
X
–
X
X1
–
–
X
X
–
–
–
X
–
X
X1
–
X3
X
X
X
X
–
–
X
4
X
X
1
X
3
X
–
X
X
–
–
–
–
X
X
X
X1
–
–
X
X
–
–
Fault Kick-Cur
Warn I=Low
Fault Wrong Freq
X
Warn I=High
Fault Connection
X
Warn SCR OL
Fault Phase Loss
–
Warn OL
Prot SCR OL
–
Fault BP Open
Prot PTC
X
Fault BP Closed
Prot Phase Rev
–
Fault FB Timeout
Prot Phase Imb
–
Fault Open SCR
Prot High I
X
Active when selected
Fault SC SCR
Prot Locked Rot
Stand by
LCD indication
Prot Underload
Always active
Prot Motor OL
Active when selected
X
2
Table 7-1 LCD Indication
Table 7-2 General Faults
Status
Possible cause
Solution
Motor humming/starts without
given start signal
Shorted SCR By-pass contactor stuck in
the closed position
Check and replaceCheck and correct the reason
Bad motor sound during start
and operation
Inside Delta connection wrong
Check and correct the wiring
Bad motor sound during stop
Wrong ramp time for stop
Try different ramp times (some adjustments may be
necessary for best result)
Control wiring not correctStart and stop
Motor does not start when
giving start command usingthe command given at the same timeKeypad
is in Local Control menu
hardware inputs
Displayed current in LCD is
not stable
MN853
The motor is too small The load on
the motor is too small (current is out
ofmeasuring range)
Check connections for start and stopCheck that
start and stop command is not given at the same
time Check that the keypad is not in Local Control
menu.
Check that the softstarter corresponds to the m
Troubleshooting 7-1
7-2 Troubleshooting
MN853
MN853
Troubleshooting 7-3
7-4 Troubleshooting
MN853
Appendix A
Replacement Parts
Part Description
MST030
MST037
MST044
MST050
MST060
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Printed circuit board Low Voltage Bd.
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
Printed circuit board High Voltage Bd.
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
Cooling fan
2
1SFA 899015R7024
2
1SFA 899015R7024
2
1SFA 899015R7024
2
1SFA 899015R7024
2
1SFA 899015R7024
Display
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
Keypad
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
SCR (Thyristors)
3
1SFA 899010R1042
3
1SFA 899010R1057
3
1SFA 899010R1092
3
1SFA 899010R1092
3
1SFA 899010R1132
SCR (Thyristor)
Changing Kit
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
Current transformer
3
1SFA 899001R1030
3
1SFA 899001R1040
3
1SFA 899001R1050
3
1SFA 899001R1050
3
1SFA 899001R1060
Cover
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
Part Description
MST072
MST085
MST105
MST142
MST175
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Printed circuit board Low Voltage Bd.
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
Printed circuit board High Voltage Bd.
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
Cooling fan
2
1SFA 899015R7024
2
1SFA 899015R7224
2
1SFA 899015R7224
2
1SFA 899015R7224
4
1SFA 899015R7224
Display
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
Keypad
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
SCR (Thyristors)
3
1SFA 899010R1172
3
1SFA 899010R1172
3
1SFA 899010R1210
3
1SFA 899010R1250
3
1SFA 899010R1250
SCR (Thyristor)
Changing Kit
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
Current transformer
3
1SFA 899001R1075
3
1SFA 899001R1100
3
1SFA 899001R1125
3
1SFA 899001R1150
3
1SFA 899001R1200
Cover
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
Part Description
MST210
MST250
MST300
MST370
MST470
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Printed circuit board Low Voltage Bd.
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
Printed circuit board High Voltage Bd.
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
Cooling fan
4
1SFA 899015R7224
4
1SFA 899015R7224
4
1SFA 899015R7224
3
1SFA 899015R7224
3
1SFA 899015R7224
Display
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
Keypad
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
SCR (Thyristors)
3
1SFA 899010R1330
3
1SFA 899010R1500
3
1SFA 899010R1500
6
1SFA 899008R1280
6
1SFA 899008R1370
SCR (Thyristor)
Changing Kit
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1001
1
1SFA 899012R1002
1
1SFA 899012R1002
Current transformer
3
1SFA 899001R1250
3
1SFA 899001R1250
3
1SFA 899001R1300
3
1SFA 899001R1400
3
1SFA 899001R1500
Cover
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7001
1
1SFA 899019R7002
1
1SFA 899019R7002
MN853
Replacement Parts A-1
Part Description
MST570
MST720
MST840
MST1050
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Qty.
Part No.
Printed circuit board Low Voltage Bd.
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
1
1SFA 899020R7000
Printed circuit board High Voltage Bd.
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
1
1SFA 899020R7690
Cooling fan
3
1SFA 899015R7224
3
1SFA 899015R7224
3
1SFA 899015R7224
3
1SFA 899015R7224
Display
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
1
1SFA 899017R1000
Keypad
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
1
1SFA 899018R1000
SCR (Thyristors)
6
1SFA 899008R1370
6
1SFA 899008R1540
6
1SFA 899008R1600
6
1SFA 899008R1990
SCR (Thyristor)
Changing Kit
1
1SFA 899012R1002
1
1SFA 899012R1002
1
1SFA 899012R1002
1
1SFA 899012R1002
Current transformer
3
1SFA 899001R1600
3
1SFA 899001R1750
3
1SFA 899001R2000
3
1SFA 899001R2200
Cover
1
1SFA 899019R7002
1
1SFA 899019R7002
1
1SFA 899019R7002
1
1SFA 899019R7002
A-2 Replacement Parts
MN853
Baldor Sales Offices
UNITED STATES
ARIZONA
PHOENIX
4211 S 43RD PLACE
PHOENIX, AZ 85040
PHONE: 602-470-0407
FAX: 602-470-0464
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FAX: 203-269-5485
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FAX: 813-241-9514
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62 TECHNOLOGY DRIVE
ALPHARETTA, GA 30005
PHONE: 770-772-7000
FAX: 770-772-7200
ILLINOIS
CHICAGO
340 REMINGTON BLVD.
BOLINGBROOK, IL 60440
PHONE: 630-296-1400
FAX: 630-226-9420
NEW YORK
AUBURN
ONE ELLIS DRIVE
AUBURN, NY 13021
PHONE: 315-255-3403
FAX: 315-253-9923
TEXAS
DALLAS
2920 114TH STREET SUITE 100
GRAND PRAIRIE, TX 75050
PHONE: 214-634-7271
FAX: 214-634-8874
INDIANA
INDIANAPOLIS
5525 W. MINNESOTA STREET
INDIANAPOLIS, IN 46241
PHONE: 317-246-5100
FAX: 317-246-5110
NORTH CAROLINA
GREENSBORO
1220 ROTHERWOOD ROAD
GREENSBORO, NC 27406
PHONE: 336-272-6104
FAX: 336-273-6628
IOWA
DES MOINES
1943 HULL AVENUE
DES MOINES, IA 50313
PHONE: 515-263-6929
FAX: 515-263-6515
OHIO
CINCINNATI
2929 CRESCENTVILLE ROAD
WEST CHESTER, OH 45069
PHONE: 513-771-2600
FAX: 513-772-2219
UTAH
SALT LAKE CITY
2230 SOUTH MAIN STREET
SALT LAKE CITY, UT 84115
PHONE: 801-832-0127
FAX: 801-832-8911
MARYLAND
BALTIMORE
7071A DORSEY RUN RD
ELKRIDGE, MD 21075
PHONE: 410-579-2135
FAX: 410-579-2677
OHIO (Continued)
CLEVELAND
8929 FREEWAY DRIVE
MACEDONIA, OH 44056
PHONE: 330-468-4777
FAX: 330-468-4778
WISCONSIN
MILWAUKEE
1960 SOUTH CALHOUN ROAD
NEW BERLIN, WI 53151
PHONE: 262-784-5940
FAX: 262-784-1215
MASSACHUSETTS
BOSTON
6 PULLMAN STREET
WORCESTER, MA 01606
PHONE: 508-854-0708
FAX: 508-854-0291
OKLAHOMA
TULSA
5555 E. 71ST ST., SUITE 9100
TULSA, OK 74136
PHONE: 918-366-9320
FAX: 918-366-9338
INTERNATIONAL SALES
FORT SMITH, AR
P.O. BOX 2400
FORT SMITH, AR 72902
PHONE: 479-646-4711
FAX: 479-648-5895
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DETROIT
5993 PROGRESS DRIVE
STERLING HEIGHTS, MI 48312
PHONE: 586-978-9800
FAX: 586-978-9969
OREGON
PORTLAND
12651 SE CAPPS ROAD
CLACKAMAS, OR 97015
PHONE: 503-691-9010
FAX: 503-691-9012
MINNESOTA
MINNEAPOLIS
13098 GEORGE WEBER DR, SUITE 400
ROGERS, MN 55374
PHONE: 763-428-3633
FAX: 763-428-4551
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PHILADELPHIA
103 CENTRAL AVENUE
SUITE 400B
MOUNT LAUREL, NJ 08054
PHONE: 856-840-8011
FAX: 856-840-0811
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159 PROMINENCE DRIVE
NEW KENSINGTON, PA 15068
PHONE: 724-889-0092
FAX: 724-889-0094
MISSOURI
ST LOUIS
13678 LAKEFRONT DRIVE
EARTH CITY, MO 63045
PHONE: 314-373-3032
FAX: 314-373-3038
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9810 INDUSTRIAL BLVD.
LENEXA, KS 66215
PHONE: 816-587-0272
FAX: 816-587-3735
TENNESSEE
MEMPHIS
4000 WINCHESTER ROAD
MEMPHIS, TN 38118
PHONE: 901-365-2020
FAX: 901-365-3914
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10355 W. LITTLE YORK ROAD
SUITE 300
HOUSTON, TX 77041
PHONE: 281-977-6500
FAX: 281-977-6510
P.O. Box 2400, Fort Smith, AR 72902-2400 U.S.A., Ph: (1) 479.646.4711, Fax (1) 479.648.5792, International Fax (1) 479.648.5895
www.baldor.com
© Baldor Electric Company
MN853
All Rights Reserved. Printed in U.S.A.
10/14