Bühler AG
CH-9240 Uzwil, Switzerland
Phone +41 71 955 11 11
Fax +41 71 955 33 79
www.buhlergroup.com
Operating instructions
Moisture controller
For spare parts see spare parts catalog 7952
MYFC-MOZF-66542-1-en-0803
2
Moisture controller
Preface
These operating instructions document the moisture controller MYFC-MOZF.
The operating instructions have to be handed over to those persons who are
responsible for the operation and the supervision of these devices. These
operating instructions contain the information required for the user regarding
installation, operation and maintenance. Description of activities that do not require
any special knowledge have been omitted. Repair instructions that exceed the
normal maintenance work are not provided.
The machine meets all acknowledged safety regulations. However, improper use
can involve physical danger for the user. Highest priority, therefore, has been given
to safety.
The corresponding safety instructions are marked as follows:
Danger!
Risk of injury to persons.
Caution!
Warning of material damage.
Note:
Important information or instructions.
Important information
• Procedures upon receipt
Inspect the equipment visually in accordance with the delivery contract as soon
as it has been received.
• Storage
Equipment that is not installed immediately must be stored protected against
weather and other influences.
• Installation
The assembly and installation of the machine and machine equipment must
only be carried out by observing all installation instructions supplied.
• Design versions
If different designs are described in the documentation provided, only the
information concerning the version supplied will apply. We reserve the right to
make modifications due to technical progress up to the time of delivery.
• Duty of instruction
Commissioning and maintenance must only be done by trained specialists.
Prior to the initial start-up the operating personnel must familiarize themselves
with the documentation provided.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Table of contents
3
Table of contents
1
Safety................................................................................................................6
1.1
1.2
1.3
1.4
1.5
2
3
Technical data .................................................................................................8
Description of the dampening system.........................................................10
3.1
3.2
3.3
4
Handling with a crane ......................................................................................................21
Transport weights and volumes .......................................................................................21
Installation .....................................................................................................22
5.1
6
Structure and application possibilities of the dampening system ....................................10
3.1.1
Functional description.......................................................................................10
3.1.2
Control of the moisture .....................................................................................11
3.1.3
Percent dampening ..........................................................................................11
3.1.4
Litre dosing .......................................................................................................13
3.1.5
Manual operation..............................................................................................13
3.1.6
Formulas...........................................................................................................13
Electrical connections ......................................................................................................14
3.2.1
Moisture controller MYFC/MOZF (Standard wiring) .........................................14
3.2.2
Moisture controller MYFC-MOZF (supplementary wiring)................................15
3.2.3
Percent dampening with MOZF........................................................................16
3.2.4
Litre dosing with MOZF ....................................................................................17
3.2.5
Moisture control MYFC with MOZE (special application).................................18
Remote control.................................................................................................................19
3.3.1
Built-in version ..................................................................................................19
3.3.2
Table/wall version.............................................................................................19
3.3.3
Remote control connection to MYFC ...............................................................20
3.3.4
Remote control connection to MOZF (Litre dosing or with MYFC) ..................20
3.3.5
Remote control connection to MOZF (Percent dampening).............................20
Transport........................................................................................................21
4.1
4.2
5
Safety of persons ...............................................................................................................6
Instructions for the safe use in hazardous areas ...............................................................6
1.2.1
Designated use...................................................................................................6
Installation / commissioning ...............................................................................................6
1.3.1
Installation instructions / assembly.....................................................................7
1.3.2
Special conditions for safe operation .................................................................7
Service / Maintenance .......................................................................................................7
Safety concept ...................................................................................................................7
Location............................................................................................................................22
Commissioning .............................................................................................23
6.1
6.2
Checklist for verifying EU conformity ...............................................................................23
Initial start-up MYFC ........................................................................................................23
6.2.1
Setting the parameters .....................................................................................23
6.2.2
Alignment of the measuring container..............................................................25
6.2.3
Alignment of the level measurement ................................................................26
6.2.4
Alignment of the Flowbalancer MZAH..............................................................26
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
4
Table of contents
6.3
7
7.2
7.3
Display operation............................................................................................................. 31
7.1.1
Changing parameters ...................................................................................... 32
7.1.2
Selecting parameters....................................................................................... 32
Display and status messages (MYFC and MOZF) ......................................................... 33
Offset and nominal value adjustment of the moisture..................................................... 34
7.3.1
Adjusting the offset value................................................................................. 34
7.3.2
Adjusting the moisture nominal value .............................................................. 34
Description of the MYFC Moisture Control................................................. 35
8.1
8.2
8.3
8.4
8.5
8.6
9
6.2.5
Alignment of the temperatures......................................................................... 27
6.2.6
Alignment of the microwave unit...................................................................... 28
Initial start-up MOZF........................................................................................................ 29
6.3.1
Venting the system .......................................................................................... 29
6.3.2
Checking the release and product probe......................................................... 29
6.3.3
MOZF as percent dampening .......................................................................... 29
6.3.4
Alignment of the water meter........................................................................... 30
Operation....................................................................................................... 31
7.1
8
Moisture controller
Mechanics ....................................................................................................................... 35
Schematic diagram.......................................................................................................... 36
Control............................................................................................................................. 37
8.3.1
Overview .......................................................................................................... 37
8.3.2
Control unit MEAF with MYFC auxiliary board EBD1293 variant.................... 38
8.3.3
Auxiliary board EBD1293................................................................................. 39
Electrical connections ..................................................................................................... 40
Parameters...................................................................................................................... 41
8.5.1
Overview of main menu ................................................................................... 41
8.5.2
Overview of general parameters...................................................................... 42
8.5.3
Parameter group REC ..................................................................................... 43
8.5.4
Parameter group TCON................................................................................... 45
8.5.5
Parameter group SYS...................................................................................... 47
8.5.6
Parameter group ADC ..................................................................................... 49
8.5.7
Parameter group HOST................................................................................... 50
8.5.8
Parameter group SVV...................................................................................... 50
8.5.9
Parameter group PROD .................................................................................. 51
Flowbalancer MZAH........................................................................................................ 52
8.6.1
Design features................................................................................................ 52
Description of the Liquids Flow Controller MOZF ..................................... 53
9.1
9.2
9.3
Mechanism and design variations................................................................................... 53
Control............................................................................................................................. 55
9.2.1
Control unit MEAF with IO-Extension EBD1270.............................................. 55
9.2.2
Electrical connections ...................................................................................... 56
Parameters...................................................................................................................... 57
9.3.1
Main menu overview........................................................................................ 57
9.3.2
General parameter overview ........................................................................... 57
9.3.3
Parameter group TCON................................................................................... 58
9.3.4
Parameter group HOST................................................................................... 59
9.3.5
Parameter group SYS...................................................................................... 60
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
10
Alarm messages ..............................................................................................................61
Locking the product probe MOZL (ERR63 FLOWD) .......................................................67
External 24 V alarm acknowledgement ...........................................................................67
Parameter group SERV ...................................................................................................68
Maintenance...................................................................................................71
11.1 MYFC
11.1.1
11.1.2
11.1.3
11.1.4
11.1.5
11.1.6
11.1.7
11.1.8
11.1.9
11.1.10
11.2 MOZF
11.2.1
11.2.2
11.2.3
11.2.4
11.2.5
12
5
Alarms and warnings MYFC and MOZF.......................................................61
10.1
10.2
10.3
10.4
11
Table of contents
71
Removing the measuring container..................................................................71
Sensor tongue ..................................................................................................72
Single-point force transducer ...........................................................................73
Force transducer ..............................................................................................74
Diaphragm drive ...............................................................................................75
Inlet spout .........................................................................................................76
Metering slide gate ...........................................................................................77
Baffle plate........................................................................................................78
Protective bellows.............................................................................................78
Force transducer ..............................................................................................78
79
Water filter ........................................................................................................79
Shut-off valve....................................................................................................79
Control valve.....................................................................................................80
Water meter......................................................................................................81
One-way light scanner for 10…30 V DC (Telco probe)....................................82
After-sales service.........................................................................................83
12.1 Spare parts.......................................................................................................................83
12.2 Address 85
13
Appendix ........................................................................................................86
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
13.9
13.10
Parameter list MYFC........................................................................................................86
Recipe list MYFC .............................................................................................................87
Parameter list MOZF........................................................................................................88
MYFC-65005 overview ....................................................................................................89
MYFC-65000 dimensional drawing..................................................................................90
MOZF-65000 dimensional drawing standard and hot water version ...............................91
MOZF-65007 dimensional drawing chlorine version .......................................................92
Wiring diagram MOZF......................................................................................................93
Sample taking ..................................................................................................................94
Moisture determination in the laboratory .........................................................................94
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
6
Safety
Moisture controller
1
Safety
1.1
Safety of persons
•
•
•
1.2
Safety covers must always be installed and locked. Open or removed safety
covers are danger spots for crushing and cutting injuries.
Always keep safety devices in good working condition. Safety devices must not
be bridged over or put out of operation.
Maintenance work at the machine or parts thereof must only take place with
the installation at a standstill!
Ensure that all power sources such as:
– electricity
– pneumatics
– water
are switched off and interrupted. Set service or local switches to «0» and
secure with lock against being switched on again.
Instructions for the safe use in hazardous areas
Operating instructions (section relevant for explosion protection) for
MYFC
Moisture control unit
MOZF
Liquids flow controller
according to EU guideline 94/9/EG
Group II, category 3D
1.2.1
Designated use
Use in hazardous areas according to classification
II 3D group II, category 3D, operating material for dust atmosphere zone 22
The requirements of standards EN50014 and EN50281-1-1 are fulfilled
Marking (see device)
II 3D IP55 T=70°C Ta<=55°C
Permitted temperature
max. 55°C
1.3
Installation / commissioning
•
•
The devices may only be installed, connected and commissioned by qualified
personnel. The qualified personnel must have knowledge of types of
protection, rules and regulations for operating materials in Ex areas.
Check whether the classification (see marking on the device) is appropriate for
the application.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Safety
7
1.3.1
Installation instructions / assembly
• Avoid static charges on plastic devices and cables.
• To avoid static charges, only clean the device with a damp cloth.
• Do not install the device in the dust flow.
• Avoid dust accumulation on the devices.
• Protect devices and cables effectively against damage
(e.g. no installation in or near transport routes or crane travel routes).
• For connection allocation and electrical parameters, see marking on the device
or operating instructions.
• Only remove any sealing plugs of cable screw connections or plugs
immediately before inserting lines or screwing on socket in order to prevent dirt
entering.
• Avoid dust deposits in the switch cabinets by keeping them closed wherever
possible. If dust has accumulated, clean the cabinets with a suitable vacuum
cleaner (EX area).
1.3.2
Special conditions for safe operation
• Devices with connection room (cable screw connections) have reduced control
cable relief. Sufficient cable relief must be ensured or the cable must be
permanently laid.
• For devices with connection room, do not disconnect connection leads when
energized.
• For plug connections, a warning sign must be fitted near the plug connection
switch the warning «Do not separate when energized».
If available, use the sticker supplied.
1.4
Service / Maintenance
No modifications may be made to the device. This also applies to repairs (e.g. no
replacement of components with other products). If in doubt, please contact the
manufacturer.
1.5
Safety concept
The moisture controller MYFC/MOZF is normally part of an installation and therefore integrated into the safety concept of the installation.
If the moisture controller MYFC/MOZF is not used within this safety concept, the
user has to redefine the risk estimation of the dangers involved and has to take
suitable measures.
After the initial startup and safety inspection, the CE sign can be mounted and
the EC Declaration of Conformity issued (see chapter 6.1).
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
8
Technical data
2
Technical data
Moisture controller
Housing
Protection type
IP65
Ambient conditions
Temperature (in operation)
Temperature (device turned off)
Humidity
–10…+50 °C
–10…+75 °C
max. 95 % no condensation
Power supply
MYFC voltage range
MYFC power input
115 V AC / 230 V AC (+10 % / –15 %) 50/60 Hz
max. 70 VA
MOZF voltage range
MOZF power input
Compressed air MYFC
85...264 V AC 50/60 Hz
max. 70 VA
4...10 bar
Air quality:
Free of dust, oil and water, dried according to
Pneurop 6611 (see also UAS-10030/-10031)
Air consumption: 10 l/h
Data backup
Min. 20 years (battery-buffered RAM)
24 V inputs
Power input max. 15 mA
24 V outputs
Max. load 200 mA short-circuit-proof. The entire load
of the 24 V from external consumers must not
exceed 700 mA.
Analog output 0/4…20 mA
Maximal load resistance 500 Ω
(Resolution 800 parts)
Analog input 0/4…20 mA
Input resistance 150 Ω
(Resolution 500 parts)
Serial interface RS-485
Bühler Standard Scales Protocol to control system
(according to Handbook 66435) or remote control
according to Appendix
Interference emission
EN 50081-1 Class B fulfilled
Interference immunity
EN 50082-2 Industrial sector fulfilled
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Accuracy MYFC
Technical data
9
The MYFC does not replace laboratory measurements. The device measures online the product
moisture and reacts to fluctuations in raw moisture.
The raw moisture has to be checked periodically.
In addition please note that the B1 moisture has to
be checked as well. Losses that can occur due to
transport or in the silo cannot be corrected by the
MYFC.
Please note that differences may occur with different
product. These differences can be corrected via the
recipe parameters.
Humidity measurement MYFC
At the operation point (AP) the accuracy is
±0.2 %.
AP
0.4 % 4 %
Flowbalancer
After referencing with a check weigher, the
accuracy is
2…20 t/h
±0.5 t/h
20…100 t/h
±2.5 %
It is to be noted that the reproduceability, which is
very important for dampening, is somewhat more
accurate.
Accuracy MOZF
The accuracy of the MOZF depends on the size of
the device and the flow line. The device can be
calibrated if more accurate dosing is required.
(TCON.WCNT)
MOZF 315
MOZF 1000
MOZF 2250
MOZF 4500
± 6 l/h
±20 l/h
±45 l/h
±45 l/h
Water quality
Water pressure
MOZF standard version
Hot water version
MOZF chlorine version (PVC)
© Copyright 2008 Bühler AG
See section 9
Chlorine addition max. 50 ppm
Water temperature max. 50 °C
Chlorine addition max. 50 ppm
Water temperature max. 90 °C
Chlorine addition max. 600 ppm
Water temperature max. 50 °C
With very dirty water the optional filter assembly
MOZF 82004-81 is to be used.
MYFC-MOZF-66542-1-en-0803
10
Description of the dampening system
Moisture controller
3
Description of the dampening system
3.1
Structure and application possibilities of the dampening system
3.1.1
Functional description
The MYFC/MOZF moisture controller is used to determine the product moisture of
wheat. Here it is possible to determine the natural moisture as well as the moisture
of tempered wheat (Note standing times).
The moisture control system requires no external data in order to be able to
calculate the correct amount of water. All necessary parameters are determined by
the moisture control unit MYFC. The system can therefore be integrated into any
cleaning process.
The system basically consists of two machines:
The moisture control unit MYFC and the liquids flow controller MOZF.
The moisture control unit MYFC continually measures the moisture of the wheat.
The measurements are made with the use of microwave measuring technology.
The product flows through a bypass (approx. 2 t/h), which is equipped with various
sensors. The current moisture of the product is calculated from the microwave
signal, the weight in the container and the product temperature.
Based upon this current moisture, the pre-set nominal moisture and the current
product flow, the MYFC calculates the required water volume, which is transmitted
to the water dosing unit. The MOZF then controls the calculated water volume.
Wheat
MYFC
Moisture
control unit
Nominal value for water
l
Release
MOZF
Wheat
Dampener
(e.g. MOZL)
Wheat
Liquids flow
controller
Alarm
Water
Two MOZF and two dampeners
can be connected if required.
TCON.MODE = MOIST2
Fig. 3.1 Moisture controller MYFC-MOZF
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Description of the dampening system
11
3.1.2
Control of the moisture
This is the normal operation of the moisture control. The user enters a moisture
nominal value and the system doses the required water volume to achieve this
nominal value.
3.1.3
Percent dampening
Only the current product flow and a nominal water value in percent are needed for
percent dampening. The system calculates the required water value on the basis of
the product flow. This mode of operation is used as a pre- or after-dampening
when a defined percentage of water should be added.
This mode of operation can be implemented in different ways:
• Percent dampening with MYFC
• Percent dampening without MYFC
Percent dampening with MYFC
This mode of operation is used in the following situations.
1. The user would like to add a certain percentage of moisture. This is not
recommended, however, since the operation mode of the MYFC must be
switched over.
2. There is a problem with the moisture measurement. The level control and the
metering slide gate work perfectly. This mode of operation can be switched on
temporarily until the problem with the moisture measurement is rectified.
The advantage is that the water volume is calculated correctly even when the
product flow varies.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
12
Description of the dampening system
Moisture controller
Percent dampening without MYFC (only MOZF)
The percent dampening can be implemented without MYFC, since the moisture
determination of the wheat is not required. The MOZF calculates the required water
volume. For this the current product flow must be known, however; i.e. one or more
dosing elements must be connected to the MOZF. The MOZF then independently
totals the sum over all connected dosing or scale elements. This mode should only
be used with relay controls. If a control system is available, the MOZF should be
operated as a litre dosing device, as the capacity of the check weigher is known to
the control system.
Functional description MOZF
Configuration is very simple. The parameter TCON.CTRL determines how many
dosing elements were connected to the MOZF. The MOZF now automatically tests
which and how many check weighers are connected to the bus. For percent
dampening, only the current flow capacity of the check weighers is relevant. Error
messages of the check weighers are not processed.
The following faults result in an alarm message:
• The number of check weighers is <> TCON.CTRL
• The sum of dosing capacities is > TCON.FMAX
Wheat
Bühler
Scale controller
or
Flowbalancer
Product capacity kg/h
maximum 32 Dosing or
Scale elements
Wheat
MOZF
Liquids flow
controller
Water
Dampener
(e.g. MOZL)
Wheat
Fig. 3.2 Percent dampening with MOZF
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
3.1.4
Description of the dampening system
13
Litre dosing
This mode of operation is always switched on at the MOZF. The litre dosing mode
is used in the following situations:
1. Only a MOZF is used to pre-set a water volume. No moisture control unit
MYFC is available. The water volume is pre-set via an interface or locally at the
device.
Example: Dampening 1. break flour or B1
2. The product flow measurement of the MYFC does not function, or the
connection between MYFC and MOZF is interrupted. In this case the MOZF
must be switched over to litre dosing or manual operation.
3.1.5
Manual operation
This mode of operation is only necessary when the MOZF does not function. The
water volume is set via a tap and can be read at the sight glass. The water flow is
stopped as soon as the product detection probe of the dampener is no longer
covered or the release is interrupted.
In case of a malfunction in the MYFC, the MOZF should be switched over to litre
dosing (3.1.4). This allows the MOZF to continue regulating and controlling the
water flow.
3.1.6
Formulas
QH2O = Qproduct ∗
Qproduct
100% – fnominal
= QH2O ∗
fnominal – fraw
fraw = fnominal –
fnominal =
© Copyright 2008 Bühler AG
fnominal – fraw
100% – fnominal
Legend:
QH2O
= Dosing rate in l/h
Qproduct
= Product rate in kg/h
fraw
= Raw moisture in %
fnominal
= Nominal moisture in %
QH2O
∗ (100% – fnominal )
Q product
Qproduct ∗ fraw + QH2O ∗ 100%
Q product + QH2O
MYFC-MOZF-66542-1-en-0803
14
Description of the dampening system
Moisture controller
3.2
Electrical connections
3.2.1
Moisture controller MYFC/MOZF (Standard wiring)
MYFC Moisture
measuring unit
0
lb
kg
MEAF
F
115 / 230 V AC
70 VA
X11
L1
N
PE
1 2 3 4
on
off
Compressed air
4...10 bar
X53 SIO2+
X53 SIO2–
X53 Shield
S6
MOZF
Water dosing unit
0
Interface cable RS-485
twisted and shielded
lb
kg
MEAF
F
1 2 3 4
on
off
85...264 V AC
X7 SIO+
X7 SIO–
S3
X101:L
X101:N
X101:PE
X101:7 Alarm
X101:6 0V
24 V Alarm signal
0 V = Alarm
Release 24 V 0.5 A
Water dosing unit
X101:9 Release 24 V
X101:8 0V
X101:11 Valve
Flow-Detect-Probe MOZL
X101:4 24V
X101:5 Signal
X101:6 0V
X101:10 0 V
Water shut-off
valve
MOZL
(24 V / 3 W)
Fig. 3.3
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
3.2.2
Description of the dampening system
15
Moisture controller MYFC-MOZF (supplementary wiring)
MYFC Moisture
measuring unit
0
lb
kg
MEAF
F
0/4…20 mA input
nominal moisture
X54 AI+
X54 AIShield
HOST interface
RS-485
X7 SIO+
X7 SIO–
Shield
Profibus
interface
X20
X2 DO4
X2 0V
24 V weight pulse
X8 AO+
X8 AOShield
0/4…20 mA output
configurable
Actual moisture or
product rate t/h
X52 24V
X52 0V
X52 SIO3+
X52SIO3–
Shield
Remote control
built-in or
cabinet version
0
lb
kg
MEAF
F
MOZF
Water dosing unit
0
MEAF
lb
kg
F
0/4…20 mA input
nominal value
water flow rate
(only when MOZF
used without MYFC)
X19 AI+
X19 AI–
Shield
X2 DO4
X2 0V
24 V water pulse
X19 AO2+
X19 AO2–
Shield
0/4…20 mA output
water flow rate l/h
X17 24V
X17 0V
X17 SIO2+
X17 SIO2–
Shield
Remote control
built-in or
cabinet version
0
MEAF
lb
kg
F
Fig. 3.4
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
16
Description of the dampening system
3.2.3
Percent dampening with MOZF
Moisture controller
MOZF
Water dosing unit
0
MEAF
lb
kg
F
0/4…20 mA input
nominal value
percent (optional)
Profibus interface
(optional)
HOST interface
RS-485 (optional)
or
remote control
(optional)
0
MEAF
lb
kg
X19 AI+
X19 AI–
Shield
X20
X2 DO4
X2 0V
24 V weight pulse
X19 AO2+
X19 AO2–
Shield
0/4…20 mA output
water flow rate l/h
1 2 3 4
on
off
X7 SIO+
X7 SIO–
Shield
S4
X17 SIO2+
X17 SIO2–
Shield
X6 24 V
X6 0 V
Maximum 32
control units
Bühler
dosing or
scale
elements
F
It is not possible to use
a remote control if the
HOST-interface is used!
The
addresses
may be
defined at will!
X101:L1
85...264 V AC
70VA
X101:N
X101:PE
Release 24 V 0.5 A
Water dosing
Flow-DetectProbe MOZL
X101:7 Alarm
X101:6 0 V
24 V alarm signal
0 V = alarm
X101:9 Release 24 V
X101:8 0 V
X101:11 Valve
Water shut-off valve
MOZL (24 V / 3 W)
X101:4 24 V
X101:5 Signal
X101:6 0 V
X101:10 0 V
Fig. 3.5
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
3.2.4
Description of the dampening system
17
Litre dosing with MOZF
MOZF
Water dosing unit
0
MEAF
lb
kg
F
0/4…20 mA input
nominal value
water (optional)
X19 AI+
X19 AI–
Shield
Profibus interface
(optional)
X20
HOST interface
RS-485 (optional)
X7 SIO+
X7 SIO–
Shield
X2 DO4
X2 0 V
24 V weight pulse
X19 AO2+
X19 AO2–
Shield
0/4…20 mA output
water flow rate l/h
X17 24 V
X17 0 V
X17 SIO2+
X17 SIO2–
Shield
Remote control
built-in or
cabinet version
0
MEAF
lb
kg
F
X101:L1
85...264 V AC
70 VA
X101:N
X101:PE
Release 24 V 0.5 A
Water dosing
Flow-DetectProbe MOZL
X101:7 Alarm
X101:6 0 V
24 V alarm signal
0 V = alarm
X101:9 Release 24 V
X101:8 0 V
X101:11 Valve
Water shut-off valve
MOZL (24 V / 3 W)
X101:4 24 V
X101:5 Signal
X101:6 0 V
X101:10 0 V
Fig. 3.6
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
18
Description of the dampening system
Moisture controller
3.2.5
Moisture control MYFC with MOZE (special application)
The MYFC can also be operated with a liquid flow control MOZE. Differences exist
only in the lock. The product probe of the dampener must be linked in the system
control directly with the release function. The supplementary functions of the MYFC
are all present.
See 3.2.2 Moisture controller MYFC-MOZF (supplementary wiring)
MYFC
115/230 V / 70 VA
X11
L1
0
lb
kg
MEAF
F
N
PE
Alarm X2: DO 1
X2: 0 V
1 2 3 4
Compressed air
4…10 bar
24 V alarm signal
0 V = alarm
on
off
S6
X53 SIO2+
X53 SIO2–
X53 Shield
Interface cable RS-485
twisted and shielded
115/230 V / 70 VA
X12 = B
X13 = B
X14 = B
L
N
PE
Release 24 V
Water dosing
Comp. air
4…8 bar
I = 300 mA
24 V / 9 W
X4:1 +RS-485
X4:2 –RS-485
MOZE
Water dosing unit
X9:2 Release 24 V
X9:3 0 V
Water shut-off valve
Fig. 3.7
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
3.3
Description of the dampening system
19
Remote control
The remote control can be connected at any time. The remote control allows all
functions and displays present on the device.
The remote control can be connected to the MYFC and the MOZF. If there is an
MYFC with remote control, no remote control is needed for the MOZF since the
current water flow and error messages of the MOZF are already displayed on the
MYFC. If the MOZF is used for percent dampening or litre dosing, a remote control
is useful.
3.3.1
Built-in version
246
216
Order No. see spare
parts catalog 7952
Protection type Foil IP65
Depth 40 mm
165
75.5
135
Mains supply
24 V DC from MEAF
max. 100 mA
75.5
8 holes 6 mm
Front cut-out
116
116
Fig. 3.8
3.3.2
Table/wall version
49
310
200
2 slots in the rear wall for
wall mounting
Order No. spare parts
catalog 7952
Protection type IP65
244
Weight approx. 4 kg
Height upper rear
approx. 65 mm
Height lower front
approx. 45 mm
Mains supply
24 V DC from MEAF
max. 100 mA
Fig. 3.9
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
20
Description of the dampening system
Moisture controller
3.3.3
Remote control connection to MYFC
MYFC EBD1293
Remote control
1234
S5
S5:1=ON
S5:2=ON
S5:3=ON
S5:4=OFF
Shield
SIO+
SIOCOM
24 V
0V
X52:1
X52:2
X52:3
X52:4
X52:5
X52:6
RS485
green
yellow
brown
white
X2:1 Shield
X2:2
X2:3
X2:4
X2:5 +
X2:6 –
X1:1
X1:2 0 V
X1:3 +24 V
Cable
UXE-30605-302
max. length
1000 m
X61
RS232
SYS.DISP see description
12345678
S9
S9:1 = OFF
S9:2 = ON
S9:3 = OFF
S9:4 = OFF
S9:5 = OFF
S9:6 = OFF
S9:7 = ON
S9:8 = OFF
Fig. 3.10
3.3.4
Remote control connection to MOZF (Litre dosing or with MYFC)
MEAF IO-Extension
Remote control
1234
S4
S4:1 = ON
S4:2 = ON
S4:3 = ON
S4:4 = OFF
Shield
SIO2+
SIO2COM
+24 V
0V
X17:1
X17:2
X17:3
X17:4
X17:5
X17:6
green
yellow
brown
white
X2:1 Shield
X2:2
X2:3
X2:4
X2:5 +
X2:6 –
X1:1
X1:2 0 V
X1:3 +24 V
Cable
UXE-30605-302
max. length
1000 m
SYS.DISP see description
12345678
S9
S9:1 = OFF
S9:2 = ON
S9:3 = OFF
S9:4 = OFF
S9:5 = OFF
S9:6 = OFF
S9:7 = ON
S9:8 = OFF
Fig. 3.11
3.3.5
Remote control connection to MOZF (Percent dampening)
MEAF Base PCB
Remote control
1234
S3
S3:1 = ON
S3:2 = ON
S3:3 = ON
S3:4 = OFF
Shield
SIO+
SIOCOM
X7:1
X7:2
X7:3
X7:4
24 V
X6:1
X6:2
X6:3
X6:4
0V
SYS.DISP see description
green
yellow
brown
white
Cable
UXE-30605-302
max. length
1000 m
X2:1 Shield
X2:2
X2:3
X2:4
X2:5 +
X2:6 –
X1:1
X1:2 0 V
X1:3 +24 V
12345678
S9
S9:1 = OFF
S9:2 = ON
S9:3 = OFF
S9:4 = OFF
S9:5 = OFF
S9:6 = OFF
S9:7 = ON
S9:8 = OFF
Fig. 3.12
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
4
Transport
21
Transport
Note:
The transport must only be handled by persons who are familiar with and
trained for this task.
4.1
Handling with a crane
A crane can be used to unload and transport the equipment.
Caution: The hoisting gear has to be checked for the required design and the
permissible load capacity. The moisture control unit must only be lifted with the
transportation safety device installed by Bühler.
Attach the ropes only at the eyebolts provided for this purpose.
Fig. 4.1
4.2
Transport weights and volumes
Note:
Generally the transport weights in the shipping papers apply and have to be
observed!
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
22
Installation
Moisture controller
5
Installation
5.1
Location
Note:
When adjusting the height of the device, be sure that the overflow container
does not rest on the Flowbalancer, but rather hangs at the upper table board
(otherwise the metering slide gate scrapes on the inlet spout in the Flowbalancer).
•
•
•
•
First tighten the transport safety screws by hand. Then screw the eyebolts into
the upper table board and hang the MYFC on a crane. Now the lateral screws
on both table boards (upper and lower boards) can be loosened. The machine
can now be moved down by lowering the crane.
The control unit must be mounted free from vibration on a solid floor or on the
ceiling.
Supply and discharge elements/machines may not be screwed to the control
unit.
Select the place of installation for the unit so that the electronics are not
exposed to direct sunlight.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Commissioning
6
Commissioning
6.1
Checklist for verifying EU conformity
23
The following items must be checked prior to commissioning of the machine:
1. The operator has been informed that the operating instructions must always be
accessible to the personnel and that is he is responsible for instructing the
personnel.
2. Assembly and installation have been carried out according to the operating
instructions.
3. If erected in an Ex-zone, the machine must be earthed properly.
6.2
Initial start-up MYFC
6.2.1
Setting the parameters
The following points must be checked before start-up:
1. Remove the transportation safety device of the measuring container
(yellow-headed screws).
2. TCON.FMAX
The maximum cleaning capacity + approx. 20 % must be set. This value
should not be too large, since the level control reacts differently at a setting of
2 tons than at 60 tons.
3. TCON.T1
This time determines the maximum delay between the release and the
detection of the product in the MYFC. See 10.2
4. TCON.T2
This determines the maximum time the product needs from the MYFC to the
dampener. Set the time with adequate tolerance (+100 %). If there is no flow
detection probe, deactivate the monitoring with 0. See 10.2
5. Settings only when a control system is present.
Set the parameter SYS correctly according to the wiring. See 8.5.5
Set the parameter HOST correctly. See 8.5.7
6. Settings only when a MEAF remote control is available.
Set the parameter SYS.DISP correctly. See 8.5.5
7. Settings of the recipes with valid starting values
Load at least Recipe 0 with valid values. See 8.5.3
8. Checking the mechanics
The following points must be checked:
– The measuring container must be center-mounted and hang freely.
– The level measuring rod must turn freely.
– The MZAH slide may not touch even when completely open.
9. Checking the sensors
The sensors are aligned during manufacture. A brief check of the values and
zero points is recommended, however. A new alignment need not be made.
ADC.ZFLO
Zero point of the MZAH
ADC.ZNIV
Zero point of the level control
ADC.ZWT
Zero point of the measuring container
ADC.EXT
Ambient temperature
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
24
Commissioning
Moisture controller
The following settings must be checked when the product is dosed:
1. The throttle flap for the measuring container must be set correctly. At the
normal rate the product should need approx. 10 seconds to flow through the
sight glass. This amounts to a flow rate of approx. 1.5 t/h. For very low flow
rates < 3 t/h a flow time of approx. 15 seconds should be selected.
The adjustment is made with the two adjusting screws.
Upper screw clockwise => product quantity is decreased
Lower screw clockwise => product quantity is increased
ca.
10 10
approx.
Sekunden
seconds
Fig. 6.1
2. Check the inlet aspiration. The inlet aspiration should be approx. 3…5 m³/min.
3. Check the outlet aspiration. The outlet aspiration may be a maximum of
2 m³/min. Check for secondary air at the dampener. This can otherwise lead to
major measurement errors.
4. Take a product sample and adjust the moisture offset in the corresponding
recipe. REC.OFFS
5. Check the flow capacity of the MZAH (reference check weigher or capacity
measurement). If large deviations occur, the alignment and the mechanics of
the baffle plate must be checked. The output can be adapted with parameter
TCON.FCOR.
Note:
The inlet and outlet aspiration values must be strictly adhered to. Incorrect air
volumes can influence the measurement.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
6.2.2
Commissioning
25
Alignment of the measuring container
1. Ensure that the measuring container is empty. If necessary, open the metering
slide gate with the pneumatic push button.
2. Set the calibration switch to the CAL position.
3. For the zero adjustment change to the ADC.ZWT menu and press the F-key.
SET appears during the weight acceptance and after the adjustment 0 is
displayed. Fluctuations of ±50 grams are normal.
4. Attach one of the supplied 3 kg reference weights to the hook of the measuring
container.
Fig. 6.2
5. Change to the parameter ADC.CWT and press the F-key. SET appears and
after the adjustment 3.000 is displayed.
6. Change to the parameter ADC.WT and check the display.
With the reference weight 3.000 kg and without the reference weight 0 must be
displayed. Fluctuations of ±50 grams are normal.
7. Set the calibration switch to the RUN position.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
26
Commissioning
Moisture controller
6.2.3
Alignment of the level measurement
1. Set the calibration switch to the CAL position.
2. Check the following points:
Open the metering slide gate with the pneumatic push button if necessary.
– Ensure that the product measuring rod is not covered with product
– The rod must be able to turn freely
– The rod is not to be jammed
3. Change to the parameter ADC.ZNIV and push the F-key.
SET appears during the weight acceptance and after the adjustment 0 is
displayed.
4. Set the calibration switch to the RUN position.
6.2.4
Alignment of the Flowbalancer MZAH
1. Set the calibration switch to the CAL position.
2. Change to the parameter ADC.ZFLO and push the F-key. SET appears during
the weight acceptance and after the adjustment 0 is displayed.
3. Place both supplied 3 kg reference weights on the baffle plate left and right at
the indicated mounting points.
Fig. 6.3
4. Change to the parameter ADC.CFLO and push the F-key. SET appears during
the weight acceptance and after the adjustment 6.000 is displayed.
5. Change to the parameter ADC.ZFLO and check the display with and without
reference weights.
6. Set the calibration switch to the RUN position.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
6.2.5
Commissioning
27
Alignment of the temperatures
Alignment of the internal cabinet temperature measurement CINT
1. Set the calibration switch to CAL position.
2. Set Jumper X60 to CAL position (see 8.3.3 Auxiliary board EBD1293).
3. Change to parameter ADC.CINT and press the F-key; SET appears now on
the display.
4. Re-set Jumper X60 to RUN position.
5. Change to parameter ADC.INTT. The correct temperature (± approx. 3 °C)
must be displayed.
6. Set the calibration switch to RUN position.
Alignment of the external product temperature measurement CEXT
1. Set the calibration switch to CAL position.
2. Set Jumper X62 to CAL position (see 8.3.3 Auxiliary board EBD1293).
3. Change to parameter ADC.CEXT and press the F-key; SET appears now on
the display.
4. Re-set Jumper X62 to RUN position.
5. Change to parameter ADC.EXTT. The correct temperature (± ca. 3 °C) must
be displayed.
6. Set the calibration switch to RUN position.
Note:
It is possible to adjust the temperature more precisely. However, this does not
have any effect on the accuracy of the measurement, as only temperature
changes are relevant. For this the temperature must be measured with a
temperature gauge. The measured value can now be entered for the
corresponding parameter CINT or CEXT. Then press the F-key (X62 / X60
remain on RUN) and the temperature now corresponds to the measured value.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
28
Commissioning
Moisture controller
6.2.6
Alignment of the microwave unit
1. Set the calibration switch to the CAL position.
2. Be sure that the internal temperature measurement is adjusted.
CAL INTT appears on the display if the temperature is outside of the tolerance.
Check the parameter ADC.INTT. The cabinet temperature must be displayed
(± approx. 3 °C). If the display is not correct, make alignment 6.2.5.
3. Check SVV parameter. The settings must correspond to the data on the
microwave module.
4. Connect the supplied reference resistor.
Fig. 6.4
5. Change to parameter ADC.CHF and press the F-key. SET appears and after
adjustment 10.00 dB is displayed.
6. Remove the reference resistor and fasten the plugs again correctly. No force is
to be exerted on the measuring container. The cable must be connected
horizontally.
Fig. 6.5
7. Change to parameter ADC.ZWT and check the zero point. If necessary, repeat
alignment 6.2.2.
8. Set the calibration switch to the RUN position.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Commissioning
29
6.3
Initial start-up MOZF
6.3.1
Venting the system
To guarantee the function of the MOZF from the beginning, the system must be
vented and the pressure reduction valve correctly adjusted.
See section 9.1
1. Turn the Manual / Automatic selector to vertical position so that the water can
flow through the sight glass.
2. Lay the test and service connection so that the water can be drained through
the hose connection into a container.
3. Open the water tap completely.
4. The MOZF can be tested with the parameter SERV.VA. As soon as a litre
value is stipulated there, water dosing starts immediately. Independently of the
release, the product probe and serial nominal values.
5. Vent the water filter and activate the relay manually again.
6. After venting, return the Manual / Automatic selector to the horizontal position
so that the water can flow through the control valve and water meter.
Set the test and service connection to the original position. The MOZF is now
ready to dose water.
6.3.2
Checking the release and product probe
The MOZF is locked via the signals of the release and the product probe. The
signals must be checked so that the unit can start correctly.
6.3.3
MOZF as percent dampening
1. Set the parameter SYS.REM. See 9.3.5.
2. If there is a serial HOST-connectivity, set the parameter HOST correctly.
See 9.3.4.
3. Set the parameter TCON.CTRL to the correct number of connected dosing
elements. If no addresses have been defined for the dosing elements, then
each device must be set with a different address. If the number is entered
incorrectly, ERR 17 HSTI appears.
4. Set the parameter TCON.FMAX correctly. This parameter defines the limit
value of the sum of all dosing elements. If the sum exceeds this value, an ERR
63 FMAX is given.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
30
Commissioning
Moisture controller
6.3.4
Alignment of the water meter
If the water volume must be corrected, the parameter TCON.WCNT must be
adjusted. The measurement must be made at the operating point. Fluctuations
occur with very small dosing volumes.
Note:
Do not use the water feed rate for the correction; work instead with the total
sum counter (see SERV.VA from Version 26A onwards or Σ3).
This prevents temporary control deviations from leading to a miscalculation!
The following calculation can be used for the correction.
TCON.WCNTnew =
nominal value ∗ TCON.WCNT
Value _ measured
Example:
A water volume of 95 litres instead of 100 litres was measured. The new value can
be calculated as follows:
TCON.WCNTnew =
MYFC-MOZF-66542-1-en-0803
100 ∗ 105.7
= 111.3
95
© Copyright 2008 Bühler AG
Moisture controller
Operation
7
Operation
7.1
Display operation
31
The devices MYFC and MOZF have an identical operation. This chapter addresses
the elements which are present in both devices and which are relevant for the
operation of the moisture control system MYFC/MOZF.
Joint flashing: calibration switch = CAL
1
2
3
4
5
6
7
0
FLO
lb
kg
123.456
F
14
13
12
11
10
9
8
Fig. 7.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
© Copyright 2008 Bühler AG
Operation mode, Local / Remote (LED ON)
Operation
Metering slide gate opens
Metering slide gate closes
Zero alignment
Tolerance reached
Weight unit in lb or kg
Display of the parameters with code and value
«Minus» key previous parameter
«Plus» key next parameter
«Enter» key data entry
«Arrow» key next parameter group
«F» key
special function depending on parameter
Lamp test key and clear alarm
MYFC-MOZF-66542-1-en-0803
32
Operation
Moisture controller
7.1.1
Changing parameters
longer than 1 sec. (until decimal point is flashing)
1. Press
2.
,
increases or decreases the value, or select the decimal place to be
changed with
3. Press
7.1.2
briefly (until decimal point is not flashing anymore)
Selecting parameters
Operating parameters
↑
↓
>1s
+
>1s
1
2
)
)
Parameter groups (configuration)
REC
TCON
SYS
ADC
HOST
SERV
SVV
PROD
↑
↓
1
Operating parameter → Parameter groups
Press
and
together for more than 1 second
2
Parameter groups → Operating parameter
Press
for more than 1 second
) Change
) Change
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
7.2
Operation
33
Display and status messages (MYFC and MOZF)
In order of importance the most important statuses are displayed.
These displays are only active when the MYFC has been stopped or there is no
product flow.
Status text
Condition for display
No display.
Only the decimal
point on the right
side is flashing
The device has been inactive for 30 min.
The display reappears as soon as
– the device is activated
– a key is pressed
• MYFC
The dosing release is available but no product flow is
measured.
• MOZF
No dosing release is available.
* STOP *
There is no water dosing release
* WAIT *
• MYFC
Dosing release available, but no product in the MYFC
detected.
• MOZF as litre dosing
The dosing release is available, but no set point given.
• MOZF as percent dampening
The dosing release is available, but no product has been
detected.
* MANUAL *
The local switch of the MOZF was switched to manual
operation.
EMPTY
MYFC as dosing device → no product in the MYFC
WAIT FLOWD
Wait until the flow detect probe has reacted
LOW SETPOINT
The nominal moisture value is lower than the actual value
DISCHARGE
The rest discharge was activated. (Input DI 2)
* LOCAL *
Display MOZF
The MOZF was switched to LOCAL!
* LOCAL MOZF *
Display MYFC
Standard display MYFC
If no key is pressed for more than 5 minutes, the display changes automatically to
the standard display selected by the user. For the possibilities of this standard
display, see parameter SYS.SD chapter 8.5.5
Standard display MOZF
If no key is pressed for more than 5 minutes, the display changes automatically to
the display of the current water dosing rate. For the possibilities of this standard
display, see parameter SYS.SD chapter 9.3.5
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
34
Operation
Moisture controller
7.3
Offset and nominal value adjustment of the moisture
The correct setting of the nominal moisture and the moisture offset is essential for
the operation of the device.
The B1 moisture is of great significance for optimal grinding. With the MYFC the
moisture is regulated in a storage cell before filling. Various influences can change
the moisture of the wheat after dampening:
• Temperature and relative humidity
• Long transport distances to the storage cell
• Conveyance by means of suction pneumatics
• etc.
These influences can change daily. Thus it is essential that the B1 moisture be
checked.
There are basically two possibilities for calibrating the MYFC:
1. The moisture of the dry wheat is measured and if there are deviations from the
display of the MYFC, the offset value is corrected.
2. The moisture of the stored wheat is determined and if there are deviations, the
moisture nominal value is adjusted.
7.3.1
Adjusting the offset value
This adjustment must be made at the commissioning. The moisture of the dry
wheat is measured and compared with the actual moisture value of the sample
taken. If there are differences, the offset value is corrected accordingly.
REC.OFFS = Lab value – MOIST at the sample-taking
The adjustment of the offset value corrects only the errors at the moisture
measurement. Water losses which occur after dampening must be corrected with
the moisture nominal value.
7.3.2
Adjusting the moisture nominal value
This value determines which value is used for dampening by the dampener.
Losses through transport etc. must be adjusted by changing the nominal value.
The setting can be made in the main menu parameter MOIST, or when recipes are
used, in the menu REC.MOIS.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Description of the MYFC Moisture Control
8
Description of the MYFC Moisture Control
8.1
Mechanics
35
The product stream is divided in the inlet. The main stream goes into the product
surge and approx. 2 t are fed directly into the microwave measuring channel. There
must always be some product in the product surge so that the Flowbalancer MZAH
can measure precisely. The level control ensures that the upper surge is always
half full.
Inlet 2…60 t/h
Inlet aspiration
Operation and
display
Microwave
measurement
Product depot with
level control
Control
MEAF
Product volume setting
in measuring container
Button for emergency
opening of the
metering slide gate
Electrical
connections
Flowbalancer
MZAH
Compressed air
connection
Outlet with hopper
Fig. 8.1
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
36
Description of the MYFC Moisture Control
8.2
Schematic diagram
Moisture controller
The product is divided in the inlet. The main stream flows to the left into the upper
product surge bin. The bypass stream (approx. 2 t/h) flows through the measuring
container, where the moisture is determined by means of microwaves. The product
surge bin is needed for the flow measurement. The Flowbalancer MZAH must
always be fully supplied for a precise measurement. This is achieved with a level
control, which ensures that the product surge bin is always half filled with product.
Aspiration
Product
Fig. 8.2
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.3
Control
8.3.1
Overview
Description of the MYFC Moisture Control
37
The control takes over all measuring, checking and control functions. The MEAF
standard control serves as the basis.
Reference resistor
Microwave module
Display board MEAF
Torque key
Auxiliary board MYFC
Motherboard (MEAF)
Fig. 8.3
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
38
Description of the MYFC Moisture Control
Moisture controller
8.3.2
Control unit MEAF with MYFC auxiliary board EBD1293 variant
Basic print
RAM/BATTERY
EPROM
S2
a
24 V DC
100…240 V AC
{
RUN
CAL
}
MYFC auxiliary board EBD1293
1 2 3 4
S6
X60
A B
S5
X50
X51
X52
X53
X54
X55
X56
F3
b
}
A B A B
X11
S3
X1
1 2 3 4
X42 X41
X9
X2
X3
X4
X5
X6
X7
X8
Fig. 8.4
a
b
EPROM
S2
S3, S5
S6
X41, X42
X60, X62
X61
F3
Mains supply (AC/DC converter)
Mains voltage connection 100…240 V AC to X11
See Appendix on mains supply for wiring details
Program component: To change the program, the EPROM must be lifted
carefully with a screwdriver out of the socket.
Caution: The notch must face to the left!
Calibration switch: RUN = released for operation / CAL = calibration mode
Settings for RS-485 host interface:
(Detail see operating instructions «Description of the serial interface RS-485»)
Settings for RS-485 interface to the MOZF (all switches are activated)
X41, X42 Position A
Alignment for temperature measurement Position B = RUN
Setting Position B = RS-485, Position A = RS-232 only for service purposes
Miniature fuse 1.25 A slow-blow as 24 V input fuse
Note:
There are two design variants of supply units.
The new version illustrated above and the version for MYFC delivered
before October 2004. The old versions are equipped with the supply unit
EBD1269 (Printed circuit board with black transformer)!
A conversion set is available (UVV 00031624). The advantage of the
conversion is simplified stockkeeping of spare parts. The MOZF uses the
same supply unit as the MYFC.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.3.3
Description of the MYFC Moisture Control
39
Auxiliary board EBD1293
This auxiliary board converts all relevant signals for the operation of the MYFC.
X62 Temperaturabgleich
External temperatureExtern
alignment
S6 Busabschlusseinstellungen
Bus terminator settings SIO2SIO2
S5 Busabschlusseinstellungen
Bus terminator settings SIO3SIO3
LED 15V I.O.
X61 Umschaltung
RS232
/ RS485
SIO3
Switchover RS232
/ RS485
forfür
SIO3
X60 Temperaturabgleich
internal temperature Intern
alignment
Fig. 8.5
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
40
Description of the MYFC Moisture Control
8.4
Electrical connections
Connection
Terminals
X11
+24 V
AC
85...264 V
L1
N
PE
Moisture controller
DC
24 V
Highfrequency
circuit
0V
EBD 1231
3 2 1
0V 0V 15V
X58
X1
24V
0V
1
2
3
X59
DO 1
DO 2
DO 3
DO 4
DO 5
0V
1
2
3
4
5
6
DO 6
0V
DO 7
0V
DO 8
0V
1
2
3
4
5
6
Valve 3
X4
24V
DI 1
DI 2
DI 3
DI 4
0V
1
2
3
4
5
6
24 V
24 V = Release TCON.MODE = DOSING
24 V = Rest discharge
n.u.
n.u.
0V
X7
Shield
SIO+
SIOCOM
1
2
3
4
X8
Shield 1
2
AO+
3
AO-
X2
X3
Shield
Sense+
OUT+
X9 IN+
INOUTSense-
1
2
3
4
5
6
7
Alarm
24 V = Release for water dosing
n.u.
24 V Volume pulse
X57
X50
Valve 1
Valve 2
+15V
0V
0V
n.u.
n.u.
Shield
Serial interface
RS-485 to Host
Analog output 0/4…20 mA
Actual capacity/actual moisture
or nominal value water SYS.AO
transparent
DMS
baffle plate MZAH
4-line DMS
EBD 1268 MEAF
DO = Digital Output (24 V output)
n.u. = not used
X59
X58
1
2
3
4
5
6
9-Pol SUB-D RS-232
Service interface
Jumper X61=RS-232
Use zero-modem cable
(crossed)
TXD 3
X51 RXD 2
GND 5
Valve 4
green
white
red
black
X57
X52
Shield
SIO3+
SIO3COM
24V
0V
1
2
3
4
5
6
X53
Shield
SIO2+
SIO2COM
24V
0V
1
2
3
4
5
6
X54
AI+
AIShield
T2+
T2Shield
1
2
3
4
5
6
Serial interface for
remote display
X61=RS-485
Serial interface to
MOZF
0/4…20 mA SYS.AI
0V
PT 100 + brown
PT 100 – white
Shield
OUT+
IN+
X55 INCOM
1
2
3
4
5
blue/green
white
red
black/grey
DMS
measuring
container
Shield
OUT+
X56 IN+
INCOM
1
2
3
4
5
brown
green
yellow
white
DMS level
measurement
EBD 1293 MYFC-Extension
Fig. 8.6
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Description of the MYFC Moisture Control
8.5
Parameters
8.5.1
Overview of main menu
User defined
This display can be defined by the user. The device switches after
5 minutes automatically to the selected parameter.
See SYS.SD 8.5.5 Parameter group SYS
MOIST 12.3 %
MOISTS 12.3 %
Nominal moisture or actual moisture.
As soon as the Enter key is pressed, the nominal moisture can be
entered.
H2O
123 l/h
Actual water volume of the water dosing element
FLO
1.442 t/h
Actual product throughput in tons per hour
∑1
123456
Erasable total volume of product in kg
With the F-key the meter can be deleted
∑2
123456
Non-erasable total volume of product in kg
∑3
123456
Erasable total volume of water in litres or m³
With the F-key the meter can be deleted.
∑4
123456
Non-erasable total volume of water in litres or m³
LOAD
0
Load current recipe and new recipe.
41
Examples:
*1* > 0
Recipe 1 is active (*). Recipe 1 was loaded into work recipe 0 and both
recipes are identical.
1 > *0*
Recipe 0 is active (*). Recipe 1 was loaded but adaptations were made
in recipe 1 or recipe 0.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
42
Description of the MYFC Moisture Control
8.5.2
Overview of general parameters
Moisture controller
REC
Recipes
TCON
Type-specific
configuration
SYS
System
configuration
ADC
AD converter
HOST
Ser./ Profibus
host interface
SVV
Current predistortion
PROD
Product group
REC
Recipe number
MODE
REM
ADR
Address
FMAX
Max. flow FBAL
DISP
Remote control
FCOR
Capacity
correction MZAH
T1
Monitoring time
Release
T2
Monitoring time
MOZL
QMIN
Minimum
dosing rate
QMAX
Maximum dosing
rate
AINV
Alarm output
A1
Actual curve
parameter
B1
Actual curve
parameter
C1
Actual curve
parameter
A2
Actual curve
parameter
B2
Actual curve
parameter
C2
Actual curve
parameter
P
Phase
PROD
Product group
MOIS
Nominal value
moisture
PROD
Product group
FLO
Actual product
flow
ZFLO
Zero Alignment
FBAL
CFLO
Ref. Alignment
FBAL
NIV/NIVS 20
Actual value
level
ZNIV 12
Zero Alignment
Level
WT
Actual weight
OFFS
Offset moisture
DMAX
Maximum
dosing rate
IMP
Weight pulse
AO
Analog output
AI
Analog input
SD
StandardDisplaySelection
INIT
Basic
initialization
BAUD
Baud rate
TOUT
Timeout
ZWT
Zero alignment
container
CWT
Ref. alignment
container
INTT
Internal
temperature
CINT
Ref. alignment
Internal
temperature
EXTT
External
temperature
CEXT
Ref. alignment
External
temperature
HF
Actual
attenuation
CHF
Ref. alignment
attenuation
CAL0
Calibration value
CAL1
Calibration value
CAL4
Calibration value
CAL5
Calibration value
CALT
Temperature
coefficient
Note:
The menu SERV can be found on page 68.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.5.3
Description of the MYFC Moisture Control
43
Parameter group REC
Code
Parameter group REC (Recipe)
Input range
REC
Recipe number
This setting determines which recipe can be edited. This setting has no
influence on the LOAD parameter in the main menu.
MOIS
Nominal value moisture
This is the current nominal value for the moisture.
0…25 %
[0]
PROD Product group
This value allows the use of various calibrations. This can be very useful
for special applications.
The correction values for the corresponding product number can be
found in MENU PROD. (CAL0,CAL1,CAL4,CAL5).
For wheat use the calibration 0!
OFFS
0…20
[0]
Offset moisture
This is the offset value of the moisture. Here a correction can be made if
the actual moisture MOIST deviates from the laboratory determination.
DMAX Maximum dosing rate
The maximum dosing rate limits the water flow. This is a monitoring and
safety function. If the calculated water flow increases excessively, an
alarm 66 DMAX is triggered and the water flow is stopped.
0…9
[0]
–99.99…99.99 %
[0]
0…TCON.QMAX litre
[4500]
Note:
Recipes are necessary when the MYFC is used as the first and second
dampening or the product variety changes extensively.
(Hard and soft wheat)
Note:
When recipes are changed, the change is not effected until the recipe is loaded
in the main menu with LOAD!
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
44
Description of the MYFC Moisture Control
Moisture controller
Recipe 0
Recipe 0 has a special significance. This recipe is called an operating recipe
because it is always active. Changes made in the main menu are always integrated
into Recipe 0. When the nominal moisture is adjusted in the main menu, the value
REC.MOIS[0] is changed accordingly.
Recipe 0 is thus used in two cases:
1. The user is working without recipe settings
2. The user would like to change the settings only temporarily and not store these
changes.
Recipe 1…20
These recipes are needed to optimize the moisture measurement. When very
different products should be dampened, e.g. hard and soft wheat, the accuracy can
be improved with the recipe settings. Note that the MYFC works very accurately to
a point of ±2 % moisture with the same product; therefore no recipes are required.
In addition, the safety of the dampening can be improved because an alarm is
triggered with the limit value DMAX as soon as the required water volume becomes
too large. This can have various causes:
• There was no first dampening
• The product rate is too high
• The nominal value was set too high
• The MYFC is measuring incorrectly
Recipe administration if the MYFC is connected to a control system
If the device is connected to a control system, the administration of the recipe data
should take place at the level of the control system. In this case the recipes are
only displayed and cannot be changed! It is only possible to change the recipes
when the parameter SYS.REM is set on LOC or REMA.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.5.4
Description of the MYFC Moisture Control
45
Parameter group TCON
Code
Parameter group TCON (Type-specific configuration)
Input range
MODE The operational mode of the moisture control
MOIST…%-DOS
[MOIST]
MOIST = Moisture control on the entered nominal value
%-DOS = Percent dampening based on product flow rate
Special case when two dampeners and therefore also two liquids flow
controllers MOZF are connected. The water capacity is divided
50 % \ 50 % between the two devices.
MOIST2 = Moisture control to the set nominal value
%-DOS2 = Percentage dampening due to product flow rate
DOSING = The MYFC operates as a dosing device with a full inlet.
Input DI 1 is used as a release input.
The flow rate can be set with the parameter TCON.FMAX
CALC
= The MYFC operates as a moisture control unit without MOZF
The nominal value can still be set and the water quantity is
calculated and can be issued at the analog output AO.
This setting determines the operational mode of the control. For normal
operation the MOIST setting is always used. The %-DOS setting is only
selected when the moisture measurement is not functioning properly.
FMAX
Maximum flow of the Flowbalancer
This value must be adapted to the cleaning rate so that downstream
devices are not overloaded.
Standard value: Maximum cleaning value +20 %
FCOR
Output correction factor (100.0 = no correction)
Correction factor FCOR = Reference / MZAH FLO x 100
T1
T2
QMIN
1.000…999.999 t
[60.000]
70.0…130 %
[100 %]
Monitoring time of the release
The setting of T1 determines how much time is allowed between the
dosing release and the arrival of the product at the MYFC.
See 10.2 Locking the product probe MOZL (ERR63 FLOWD)
0…9999 seconds
[3600]
Monitoring time of the product probe of the dampener.
The setting of T2 determines how much time is allowed until the product
probe at the dampener detects the product dosed from the MYFC. This
guarantees that the product probe is adjusted correctly and ensures that
the product does not remain dry. This value must be adjusted in the
system, since delays between the MYFC and the moisture unit can vary
from cleaning process to cleaning process.
See 10.2 Locking the product probe MOZL (ERR63 FLOWD)
0…9999 seconds
[300]
Minimum permissible dosing rate
With this value the minimum water rate is determined. If the actual value
is lower than this setting, the water is stopped. This setting serves to
monitor the system. If the actual water value is too low, this can have
various causes. The product moisture is being measured incorrectly or
the product flow meter is measuring incorrectly.
See (ERR65 QMIN)
© Copyright 2008 Bühler AG
0 = monitoring
deactivated
0 = no product probe
connected to the
MOZF X1:5
0…QMAX
[0]
MYFC-MOZF-66542-1-en-0803
46
Description of the MYFC Moisture Control
Code
Parameter group TCON (Type-specific configuration)
QMAX Maximum permissible dosing rate (device limit)
This value determines the editing limits of the maximum water dosing
rate. The setting should be adjusted to the liquids flow controller.
315
for MOZF315
1000 for MOZF1000 etc.
Moisture controller
Input range
[QMIN…6500] litres
[4500]
With this the value set at the parameter REC.DMAX is limited to the
QMAX value.
Note that the (ERR66 DMAX) is not related to this QMAX but to the
parameter REC.DMAX, which can be set according to the recipe.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.5.5
Description of the MYFC Moisture Control
47
Parameter group SYS
Code
Parameter group SYS (System configuration)
Input range
REM
LOC
REMS
REMA
REMP
= The nominal values are set locally
= The nominal values are serially (RS-485) adjusted
= The nominal value is adjusted by a 0…20 mA signal
= The nominal values are serially (Profibus) adjusted
LOC…REMP
[LOC]
DISP
OFF
LOC
REM
BOTH
= The remote control is turned off
= Local control (remote control displays only)
= Remote control
= Both local and remote control
LOC…BOTH
[OFF]
AINV
Invert alarm output DO 1
ON
= 0 V is an alarm (fail-safe in case of wire breakage)
OFF = 24 V is an alarm
ON…OFF
[ON]
IMP
Weight pulse
The setting determines the size in [kg] of the 24 V weight pulse of the output
(DO 4).
Note that the setting must be made correctly. A pulse always lasts 0.5 s.
Then a pause of at least 0.5 s follows.
0.5 s
>= 0.5 s
0.5 s
TCON.FMAX/3600
…65000
[100]
>= 0.5 s
This results in a maximum of 60 pulses per minute and 3600 pulses per
hour.
Example: If the maximum product flow is 30 tons, the IMP can be calculated
as follows:
IMP >= 30’000 kg / 3600 = 8.333
Thus the pulse must be set greater than 8.33.
In this case the setting is limited by the software to 9!
=> Selection 10 kg / pulse
If the pulse output is used to determine the current product flow rate, this
must be calculated over at least 5 pulses or over approx. 1 minute.
Note: If the TCON.FMAX rate is later dramatically increased, the pulse size
may need to be adjusted. All of the pulses are always emitted. If the rate is
too high, the missing pulses continue to be emitted after shutdown.
AO
Function of the analog output AO
OFF
= The output is deactivated
H2OS = Nominal water value for dampener
MOIST = Actual moisture value
FLO
= Current product flow
H2OS 4 = Nominal water value for dampener
MOIS 4 = Actual moisture value
FLO 4 = Current product flow
© Copyright 2008 Bühler AG
OFF…FLO
[OFF]
0…20.0 mA = TCON.QMAX
0…20.0 mA = 20.0 %
0…20.0 mA = TCON.FMAX
4…20.0 mA = TCON.QMAX
4…20.0 mA = 20.0 %
4…20.0 mA = TCON.FMAX
MYFC-MOZF-66542-1-en-0803
48
Description of the MYFC Moisture Control
Code
AI
Moisture controller
Parameter group SYS (System configuration)
Function of the analog input AI
OFF
= The input is deactivated
H2O IN = Actual water value
MOISTS = Nominal moisture value
H2O 4 = Actual water value
MOIS 4 = Nominal moisture value
Input range
OFF…MOISTS
[OFF]
0…20.0 mA = TCON.QMAX
0…20.0 mA = 20.0 %
4…20.0 mA = TCON.QMAX
4…20.0 mA = 20.0 %
The setting H2O IN is needed if no MOZF or MOZE is connected. This
allows any liquids flow controller to be connected. The input current is
displayed in the main group (H2O). This input is displayed only. No check is
made whether the nominal value AO.H2OS is being reached!
SD
Standard-Display-Selection
With this setting the standard display can be selected which appears every
five minutes on the display.
No.
0
1
2
3
4
5
6
7
Value left
Nominal moisture
Nominal moisture
Nominal moisture
Nominal moisture
Water throughput
Actual moisture
Actual moisture
Actual moisture
0…7
[0]
Value right
Actual moisture
Product flow FLO
Water throughput
∑1 erasable product quantity
Product throughput FLO
Product throughput FLO
Water flow
∑1 erasable product quantity
The user can also choose any parameter as a standard display. The lamp
test button is pressed on the desired parameter for 10 seconds and then the
parameter is displayed. Example SERV.TIME
INIT
Basic initialization
All parameters are reset to the standard settings.
Note: Only possible when the calibration switch is activated!
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.5.6
Description of the MYFC Moisture Control
49
Parameter group ADC
Code
Parameter group ADC (Analog-Digital-Converter)
FLO
Display of the current Flowbalancer flow
–
ZFLO
With the F-key a null balance of the Flowbalancer can be made. See
6.2.4 Alignment of the Flowbalancer MZAH
–
CFLO
Reference alignment of the Flowbalancer. This value is identical with the
weight of the supplied weights.
See 6.2.4 Alignment of the Flowbalancer MZAH
0.100…99.999 kg
[6.000]
NIV
/NIVS
The current level in the bypass is displayed. The product level should be
in the middle of the sight glass. A correction can be made with the input
key. The arrow indicates whether the current level is too high or too low.
20…300
[60]
ZNIV
With the F-key a null balance of the level-DMS can be made. Be sure that
the bypass is empty and the product detection rod turns freely. See 6.2.3
Alignment of the level measurement
WT
Input range
–
Displays the current weight of the measuring container.
ZWT
With the F-key a null balance of the measuring container can be made.
Be sure that both cables for the microwave measurement are connected
and the measuring container is empty.
See 6.2.2 Alignment of the measuring container
CWT
Reference alignment of the measuring container. This value is identical to
the weight of one weight. Be sure that both cables for the microwave
measurement are connected and the measuring container is empty. See
6.2.2 Alignment of the measuring container
INTT
The internal cabinet temperature is displayed.
CINT
Reference alignment of the internal cabinet temperature. Be sure that the
Jumper X60 is switched to CAL! The alignment is made with the F-key.
See 6.2.5 Alignment of the temperatures
EXTT
The product temperature is displayed.
CEXT
Reference alignment of the product temperature. Be sure that the Jumper
X62 is switched to CAL! The alignment is made with the F-key. See 6.2.5
Alignment of the temperatures
0…20.000 kg
[3.000]
–
–500.0…+500.0 °C
[–258.2]
–
–500.0…+500.0 °C
[–258.2]
HF
Actual attenuation
The value of the attenuation of the microwave measuring segment is
displayed. If product is in the measuring container, a value of 7..14 dB is
displayed.
–
CHF
Reference alignment attenuation
With the F-key the attenuation of the microwave measuring segment can
be aligned. For this the reference resistor (10 dB) must be connected in
place of the microwave measuring line. The alignment can only be made
if ADC.INTT was aligned correctly. If the alignment is not possible, CAL
INTT appears. See 6.2.6 Alignment of the microwave unit
0…99.99 dB
[10 dB]
Note:
Alignments can be made only when the calibration switch is activated!
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
50
Description of the MYFC Moisture Control
8.5.7
Parameter group HOST
Code
Parameter group HOST (Serial Interface 1 and Profibus DP)
ADR
Address
Moisture controller
Input range
0…255
[0]
BAUD
Setting of the baud rate for the HOST and service interface
TOUT
If the host does not communicate with this device for longer than the
preset time, an error ERR 12 HOST is triggered. The monitoring is only
active if the SYS.REM parameter is set on REMS or REMP. If the
parameter is set on LOC or REMA, the error monitoring is not active.
8.5.8
4800 / 9600 / 19200
[4800]
0…99 seconds
[60]
Parameter group SVV
Code
Parameter group SVV (Current pre-distortion)
Input range
A1
Current curve parameter
(see table on the microwave module)
0.01…5.00
[0.40]
B1
Current curve parameter
(see table on the microwave module)
0.01…1000.00
[400.00]
C1
Current curve parameter
(see table on the microwave module)
0.01…5.00
[0.75]
A2
Current curve parameter
(see table on the microwave module)
0.01…5.00
[0.50]
B2
Current curve parameter
(see table on the microwave module)
0.01…1000.00
[280.00]
C2
Current curve parameter
(see table on the microwave module)
0.01…5.00
[0.75]
P
Phase current curve parameter
(see table on the microwave module)
0…360.0 degree
[80.0]
CALT
Temperature correction value for the microwave circuit in dB / °C
(to be changed by Bühler personnel only!)
–999.999…+9999.999
[0.050]
Note:
These parameters determine the modulation of the microwave circuit. These
parameters can be read off the microwave unit and must be entered. If the
microwave circuit is replaced, these parameters must be re-entered and the
adjustment of the microwave unit must be repeated (see 6.2.6 Alignment of the
microwave unit).
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
8.5.9
Description of the MYFC Moisture Control
51
Parameter group PROD
Code
Parameter group PROD (Product group)
Input range
PROD Product group
CAL0
Calibration constant 0
Offset of the calibration
[15.781]
CAL1
Calibration constant 1
Attenuation (S21)
[+1.245]
CAL4
Calibration constant 4
Product quantity in measuring container (bulk density)
[-1.638]
CAL5
Calibration constant 5
Product temperature
[-0.100]
Note:
These parameters determine the moisture calculation. A change may be made
only with information from Bühler. Incorrect settings lead to an incorrect
moisture calculation.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
52
Description of the MYFC Moisture Control
8.6
Flowbalancer MZAH
8.6.1
Design features
Moisture controller
Fig. 8.7
The automatic Flowbalancer is used to meter a pre-selected volume of free-flowing
product from a full product stream. The product is supplied at the inlet (1).
A pneumatically operated slide gate (2) meters the product flow which, after a short
drop, strikes an inclined plate (3) and is thus deflected from the original direction of
flow. The resulting deflection force is proportional to the weight-related flow
volume. This force is measured by a force transducer (4). The MEAF electronic
control unit (5) monitors and controls the balance with the help of the control valves
(6) via the diaphragm drive (7), by opening and closing the slide gate (2). This will
result in a constant flow capacity.
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Description of the Liquids Flow Controller MOZF
9
Description of the Liquids Flow Controller MOZF
9.1
Mechanism and design variations
Control unit
53
Test and service
connection
Hand switch
Manual / Automatic
Setting the water quantity
in manual operation
Water meter
Shut-off valve
Water filter
Sight glass for manual
operation
Pressure reducing
valve
Control valve
Shut-off valve
Change-over switch
Manual / Automatic
Fig. 9.1
Design variations: standard version
(maximum water temperature 50 °C and maximum chlorine addition 50 ppm)
Type
designation
Dosing range
automatic
operation
[l/h]
Sight glass for
manual
operation
[l/h]
Minimum inlet
water pressure
[bar]
Setting of internal
pressure reduction
valve
[bar]
MOZF 315
20…1000
31.5…315
1.5
1
MOZF 1000
20…1000
100…1000
2
1.5
MOZF 2250
180…2250
250…2500
2.5
2
MOZF 4500
180…4500
650…6500
4
3.5
Note:
Setting of the internal pressure reduction valve. The value in the table
corresponds to the setting if no height difference has to be overcome on the
outlet. The pressure drop after the MOZF must be added to the setting of the
pressure reduction valve and to the inlet water pressure (approximate value:
0.1 bar per meter if the water has to be transported upwards).
Only correct setting and sufficient inlet pressure ensure faultless
operation! If the inlet pressure is set too high, this can lead to
fluctuations in the water dosing rate!
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
54
Description of the Liquids Flow Controller MOZF
Moisture controller
Special version for hot water applications
(maximum water temperature 90 °C and maximum chlorine addition 50 ppm)
Type
designation
Dosing range
automatic
operation
[l/h]
Sight glass for
manual
operation
[l/h]
Minimum inlet
water pressure
[bar]
Setting of internal
pressure reduction
valve
[bar]
MOZF 315 H
20…1000
31.5…315
1.5
1
MOZF 1000 H
20…1000
100…1000
2
1.5
Design version for chlorine addition
(Maximum water temperature 50 °C and maximum chlorine addition 600 ppm)
Type
designation
Dosing range
automatic
operation
[l/h]
Sight glass for
manual
operation
[l/h]
Minimum inlet
water pressure
MOZF 315 C
20…1000
31.5…315
1.5
MOZF 1000 C
20…1000
100…1000
2
MOZF 2250 C
180…2250
250…2500
2.5
MOZF 4500 C
180…4500
650…6500
4
[bar]
Note:
The design version for chlorine addition is supplied without pressure reducing
valve. Make sure to install the correct inlet water pressure (provide chlorineresistant pressure reducing valve)
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
9.2
Description of the Liquids Flow Controller MOZF
55
Control
Motherboard MEAF
IO-board MEAF
Power supply 24 V
Relay for shut-off valve
Connection terminals
Display board MEAF
Local switch AUT / MAN
Fig. 9.2
9.2.1
Control unit MEAF with IO-Extension EBD1270
Motherboard
RAM/BATTERY
EPROM
S2
MEAF
MOZF
RUN
IO-Extension
X104
X14
X15
A B
1 2 3 4
S4
X49
DI12
DI13
DI14
X13
CAL
X16
X17
X18
X19
F3
A B A B
S3
X1
1 2 3 4
X42 X41
X9
X2
X3
X4
X5
X6
X7
X8
Fig. 9.3
S2
S3
S4
F3
DI12
X104
Calibration switch: RUN = released for operation / CAL = calibration mode
If there is an MYFC, turn S3.3 to «On».
Settings for RS-485-Host-Interface: (For details see operating instructions
«Description of the serial interface RS-485»).
Miniature fuse 1.25 A slow-blow as 24 V input fuse
Bridge for water meter must be removed
Switch over output DO20 to pulse width modulation (Position MOZF!)
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
56
Description of the Liquids Flow Controller MOZF
9.2.2
Electrical connections
Connection
Terminals
X101
L1
N
PE
+24 V
AC
85...264 V
DC
24 V
X1
1
2
3
X2
DO 1
DO 2
DO 3
DO 4
DO 5
0V
1
2
3
4
5
6
Alarm
Water valve
n.u.
Volume pulse
n.u.
n.u
X3
DO 6
0V
DO 7
0V
DO 8
0V
1
2
3
4
5
6
n.u.
n.u.
n.u.
n.u.
n.u.
n.u
X4
24V
DI 1
DI 2
DI 3
DI 4
0V
1
2
3
4
5
6
24 V
Release
=>(X101:9)
Manual operation
Product probe =>(X101:5)
Relay test
n.u
X5
24V
DI 5
DI 6
0V
1
2
3
4
n.u.
n.u.
n.u.
n.u.
X6
24V
DI 7
DI 8
0V
1
2
3
4
n.u.
Clear alarm (pulse)
Clear alarm (release)
n.u.
X7
Shield
SIO+
SIOCOM
1
2
3
4
X8
Shield 1
2
AO+
AO3
1
2
3
4
5
6
7
DI = Digital Input (24 V Input)
DO = Digital Output (24 V Output)
n.u. = not used
0V
24V
0V
Shield
Sensor+
X9 OUT+
IN+
INOUTSensor-
Moisture controller
X13
DO 9
DO 10
DO 11
DO 12
DO 13
0V
1
2
3
4
5
6
n.u.
n.u.
n.u.
n.u.
n.u.
n.u.
X14
DO 14
DO 15
DO 16
DO 17
DO 18
0V
1
2
3
4
5
6
n.u.
n.u.
n.u.
n.u.
n.u.
X15
DO 19
DO 20
+24V
DI 9
DI 10
0V
1
2
3
4
5
6
n.u.
Control valve +
n.u.
n.u.
n.u.
Control valve –
X16
+24V
DI 11
DI 12
DI 13
DI 14
0V
1
2
3
4
5
6
Water meter +24 V
n.u.
Signal water meter
n.u.
n.u.
Water meter 0V
X17
Shield
SIO2+
SIO2COM
+24V
0V
1
2
3
4
5
6
X18
Shield
T+
TR+
RCOM
1
2
3
4
5
6
X19
Shield
AO2+
AO2Shield
AI+
AI-
1
2
3
4
5
6
=>(X101:7)
Serial interface
RS-485 to MYFC or
Host
Analog output 0/4...20 mA
current water flow rate
n.u.
Serial interface 2
RS-485 to
Remote control
n.u.
Analog output 0/4…20 mA
current water flow rate
(electrically isolated)
Analog input 0/4...20 mA
Nominal water value
l
OPTION IO-Extension
Fig. 9.4
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Description of the Liquids Flow Controller MOZF
9.3
Parameters
9.3.1
Main menu overview
H2O
H2OS
9.3.2
123 l/h
123 l/h
57
Current water flow
H2OS appears as soon as the «Enter» key is pressed.
The nominal value can be set here if the device is operated
locally (SYS.REM = LOC).
MOISTS + 1.2 %
Nominal value if the MOZF is used as percent dampening.
This parameter is normally hidden.
∑3
123456
Erasable total volume of water in litres or m³
∑4
123456
Non-erasable total volume of water in litres or m³
15.0 %
10.2 %
Nominal moisture % and actual moisture %
(The nominal moisture cannot be changed; these data are
conveyed from the MYFC)
FLO
12.345 t/h
Current product flow in tons / hour
(These data are conveyed from the MYFC)
General parameter overview
TCON
Type-specific
configuration
SYS
System configuration
HOST
Serial / Profibus
Host interface
MODE
MYFC / %-DOS / LDOS
FMAX
Max. product flow rate
T1
Monitoring time
release
WDLY
Water dosing time
delay
QMIN
Minimum dosing rate
REM
Local/ Serial/ Analog /
Profibus
DISP
Remote control
AINV
Alarm output inv.
ADR
Address
QMAX
Maximum dosing rate
WCNT
Water meter constant
CTRL
Number of devices
© Copyright 2008 Bühler AG
SERV
See page 68
BAUD
Baud rate
TOUT
Time-out
IMP
Flow quantity pulse
AO
Analog output
0/4…20 mA
AI
Analog input
0/4…20 mA
SD
Standard-DisplaySelection
INIT
Basic initialization
MYFC-MOZF-66542-1-en-0803
58
Description of the Liquids Flow Controller MOZF
9.3.3
Parameter group TCON
Code
Moisture controller
Parameter group TCON (Type-specific configuration)
Input range
MODE The operational mode of the liquids flow controller MOZF
MYFC … L-DOS
[MYFC]
MYFC = The MOZF is connected to an MYFC
%-DOS = Percent dampening based on product flow rate
L-DOS = Litre dosing based on a nominal value
This setting determines the operational mode of the control. For standard
operation the MYFC setting is always used. The %-DOS setting is only
selected when the device is involved in a dampening process in which no
MYFC is present but the product rate can be obtained from Bühler dosing
elements.
L-DOS is used when a constant volume of water dosage is desired. This
volume can be set locally or pre-set via an interface.
FMAX
2)
T1
1)
Maximum permissible total of the product dosage rate of all connected
devices when the MOZF is used for percent dampening. If this setting is
exceeded, an ERR 42 LIMIT is triggered.
Monitoring time of the release
The setting of T1 determines how much time is allowed between the
dosing release and its detection by the product detection probe at the
dampener.
See 10.2 Locking the product probe MOZL (ERR63 FLOWD)
0…9999 seconds
[3600]
0 = monitoring
deactivated
0…9999 seconds
[0]
WDLY Water dosing time delay
Waiting time until water dosing starts. As soon as all of the following
conditions are met, the time begins to elapse.
QMIN
1)
–
Release must be present
–
Nominal value > 0 must be available
–
Product probe must be covered
–
No Alarm
Minimum permissible dosing rate
With this value the minimum water rate is determined. If the actual value
is lower than this setting, the water is stopped. This setting serves to
monitor the system.
See (ERR65 QMIN)
QMAX Maximum permissible dosing rate (device limit)
This value determines the editing limits of the maximum water dosing
rate. The setting must be adjusted to the type of liquid flow control.
315
1000
1…500’000 kg
[100’000]
0…QMAX
[0]
QMIN…6500 litres
[4500]
for MOZF315
for MOZF1000 etc.
Note that the (ERR66 DMAX) is not active when TCON.MODE = MYFC
is set.
In this mode the maximum water dosage rate is set at the MYFC
according to the recipe
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Code
Description of the Liquids Flow Controller MOZF
Parameter group TCON (Type-specific configuration)
59
Input range
WCNT Correction value of the water meter. This value defines the number of
pulses per litre. Thus any water meter can be connected, or the flow can
be corrected with this factor if deviations occur.
0.1…6500.0
[105.7]
Standard values
MOZF 315
680
MOZF1000
709.5
MOZF 2250
105.7
MOZF 4500
105.7
CTRL
2)
Number of connected dosing elements when the MOZF is used for
percent dampening. If the sum of the detected devices is not identical to
this number an ERR 17 HSTI is triggered.
1…32
[1]
1) These parameters are only displayed when TCON.MODE is set at %-DOS or L-DOS. When
TCON.MODE = MYFC is set, then these parameters are not necessary and serve no function.
2) These parameters are only displayed when TCON.MODE is set at %-DOS.
9.3.4
Parameter group HOST
Code
Parameter group HOST (Serial Interface 1 and Profibus DP)
ADR
Address
Input range
0…255
[1]
BAUD
Setting of the baud rate for the HOST and service interface
TOUT
Time-out time of the host interface.
If the host does not communicate with this device for longer than the preset time, an error ERR 12 HOST is triggered. The monitoring is only
active if the SYS.REM parameter is set to REMS or REMP. If the
parameter is set to LOC or REMA, the error monitoring is not active.
© Copyright 2008 Bühler AG
4800 / 9600 / 19200
[4800]
0…99 seconds
[60]
MYFC-MOZF-66542-1-en-0803
60
Description of the Liquids Flow Controller MOZF
9.3.5
Parameter group SYS
Moisture controller
Code
Parameter group SYS (System configuration)
Input Range
REM
LOC
REMS
REMA
REMP
= The nominal values are set locally
= The nominal values are serially (RS-485) adjusted
= The nominal value is adjusted by a 0…20 mA signal
= The nominal values are serially (Profibus) adjusted
LOC…REMP
[REMS]
DISP
OFF
LOC
REM
BOTH
= The remote control is turned off
= Local control (remote control only displays)
= Remote control
= Both local and remote control
LOC…BOTH
[OFF]
AINV
Invert alarm output DO 1
ON
= 0 V is an alarm (fail-safe in case of wire breakage)
OFF
= 24 V is an alarm
ON…OFF
[ON]
IMP
Water pulse
The setting determines the volume in litres of the 24 V water pulse of the
output (DO 4)
Note that the setting must be made correctly. A pulse always lasts for
0.5 s. Then a pause of at least 0.5 s follows.
0.5 s
>= 0.5 s
0.5 s
0.1…6500.0
[10.0]
>= 0.5 s
This results in a maximum of 60 pulses per minute and 3600 pulses per
hour.
Example: If the maximum water rate is 2000 litres, the IMP can be
calculated as follows:
IMP >= 1000 l/ 3600 = 0.556
Thus the pulse must be set to a value greater than 0.55.
If the pulse output is used to determine the current product flow rate, this
must be calculated over at least 5 pulses or over approx. 1 minute.
Note: If the rate is later highly increased, the pulse size may need to be
adjusted. All of the pulses are always emitted. If the rate is too high, the
missing pulses continue to be emitted after shutdown.
AO
Analog output change-over 0/4…20 mA
The setting is valid for both outputs AO and AO2!
0MA/4MA [0MA]
AI
Analog input change-over 0/4…20 mA
0MA/4MA [0MA]
SD
Standard display
At the MOZF, the standard display after a time-out of 5 minutes is always
the actual water flow quantity.
The user can, however, choose any parameter as a standard display.
The lamp test button is pressed on the desired parameter for 10 seconds
and then the parameter is displayed. Example SERV.TIME
INIT
Basic initialization
All parameters are reset to the standard settings.
Note: Only possible when the calibration switch is activated!
MYFC-MOZF-66542-1-en-0803
[USER.H2O]
© Copyright 2008 Bühler AG
Moisture controller
10
Alarms and warnings MYFC and MOZF
61
Alarms and warnings MYFC and MOZF
10.1 Alarm messages
The MYFC and MOZF have alarm and warning messages. Alarms are triggered in
serious situations. The 24 V alarm output is set. Warnings are given when the
basic functions of the device are not influenced, e.g. interruption of the connection
to the remote control.
The error is displayed on both the MYFC and the MOZF. The errors can be
acknowledged with the alarm acknowledgement key. The errors can also be
acknowledged at the MYFC or at the MOZF.
Example 1:
The MYFC reports the error 26 TOL. The error also appears on the MOZF display
with the message that the MYFC has detected an error.
Display MYFC
Display MOZF
ERR 26 TOL
ERR 26 *MYFC
Example 2:
The MOZF reports the error 67 QTOL. The error also appears on the MYFC
display with the message that the MOZF has detected an error.
Display MYFC
Display MOZF
ERR 67 *MOZF
ERR 67 QTOL
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
62
Alarms and warnings MYFC and MOZF
Number
Meaning
Moisture controller
O
A
Standard
M
ERR 1 EPROM
EPROM Error detected in program
storage during start-up
Acknowledgement by switching off and on again
Automatic acknowledgement when the cause of the alarm
has been eliminated
Manual acknowledgement with key
Turn the MEAF off and on again.
If the alarm reoccurs, the EPROM must be replaced.
M
ERR 2
RAM
RAM
Turn the MEAF off and on again.
M
Error detected in data storage If the alarm reoccurs, the motherboard must be replaced.
during start-up
ERR 3
RTIME
Running time error software
During program execution,
data have assumed incorrect
values
If the alarm reoccurs, the EPROM must be replaced.
Contact Bühler-Service and give the system address
(Parameter SERV.SADR) and the program version
(SERV.VER).
ERR 4
WDOG
Watch-Dog
Timeout during a program
cycle
Turn the MEAF off and on again.
M
If the alarm reoccurs, the EPROM or the electronics must
be replaced. Contact Bühler-Service.
ERR 5
NO24V
24 V voltage too low
Check 24 V
A
ERR 6
MLOST
Data loss
Incorrect data detected in data
storage (RAM) during start-up.
The data are automatically
initialized to the original
values.
Change the battery over the storage component
(RAM). The data must then be re-entered.
M
AD-converter sector
The measuring range is
exceeded or fallen short of.
•
Make new alignment
•
Eliminate outside influence on baffle plate
•
Check force transducer cable
•
Replace force transducer or motherboard
•
Make new alignment
•
Eliminate outside influence on baffle plate
•
Check installation position of force transducer
ERR 7
RANGE
ERR 8
ADCAL
AD-converter calibration
Too few AD-values are
available for the calibration
M
Caution: The error can only be acknowledged if an
expansion board is mounted on the motherboard.
A complete commissioning must be carried out.
A
A
ERR 9
ADFCT
AD-converter function
Converter component delivers
no AD-values
•
Replace motherboard
A
ERR 10
AD10V
AD-converter sensor supply
The sensor supply is outside
of the permissible tolerance
•
Check jumpers X41, X42 (Sense-signals)
A
•
Replace force transducer
•
Replace motherboard
•
Measure current
•
Set counter-device to 4…20 mA also
•
Correct line interruption
•
Replace Option IO-Extension
ERR 11
<4MA
Nominal value lower 4 mA
For analog nominal value
selection
4…20 mA
(Remote-Mode-Analog)
MYFC-MOZF-66542-1-en-0803
A
© Copyright 2008 Bühler AG
Moisture controller
Number
Meaning
Alarms and warnings MYFC and MOZF
O
A
M
Acknowledgement by switching off and on again
Automatic acknowledgement when the cause of the alarm
has been eliminated
Manual acknowledgement with key
•
Put host in operation
•
Interface cable interrupted or incorrectly connected
•
Enlarge HOST.TOUT
•
HOST.TOUT = 0 (switch off)
WRN 13 Remote control
DISP
Serial communication to
remote control disturbed
(not on alarm-output)
•
Check wiring
•
Set the remote control board switch correctly
•
Remote control connected to correct terminals
according to SYS.SIO or SYS.SIO2
ERR 14
P-DP
Profibus
Profibus warning or
communication has been
interrupted (Timeout)
•
Is the Profibus master active?
•
Check Profibus wiring and address HOST.ADR
Internal communication
MYFC
The serial communication
between MYFC and MOZE/F
is disturbed for longer than
5 s.
•
Check serial interface cable between MYFC
and MOZE/F
•
Are the bus terminators set correctly?
•
It is possible that the interface SIO2 of the MYFC is
defective. Connect cable to SIO3 and wait for 30 s
(from version V24A)
•
If there is no MOZF/E, switch TCON.MODE to CALC.
•
Check that all the addresses of the dosing elements
were set correctly and that all dosing elements work
properly. If necessary adjust the TCON.CTRL
parameter.
ERR 12
HOST
ERR 17
HSTI
Timeout on Host-interface
The host system no longer
communicates with the MEAFelectronics
MOZF for percent dampening.
The number of detected
dosing elements is not
identical with the number in
TCON.CTRL parameter
Flowbalancer
63
A
A
A
Note: This warning can only be issued if a Profibus DP
extension board is installed. The exact cause of the fault
can be read off from the parameter SERV.P-DP (Profibus
diagnosis).
A
The baud rate of the dosing elements must be 4800
bauds. If new devices are connected, the error can exist
for 4 minutes until the device is found.
WRN 18 Battery Low
BAT
The buffer battery has
inadequate voltage
(not on alarm-output)
•
Check contacts of buffer battery
•
Replace battery
ERR 26
TOL
Tolerance
The control continually works
outside of the coarse
tolerance (e.g. with strongly
inhomogeneous product)
•
Increase coarse tolerance if necessary
•
Decrease regulation correction RCOR if necessary
ERR 29
PTIME
Dosing time exceeded
•
After starting, no product is found on the
baffle plate.
M
ERR 30
ZERO
Error during zero set
Weight deviation too large
during zero set.
•
Clean baffle plate
A
•
Make new alignment
•
Check force transducer (may be defective)
© Copyright 2008 Bühler AG
A
M
MYFC-MOZF-66542-1-en-0803
64
Alarms and warnings MYFC and MOZF
Number
Meaning
Moisture controller
O
A
M
ERR 38
FGATE
MYFC / MOZF
ERR 39
LEAK
ERR 42
LIMIT
ERR 54
REL
ERR 55
MOIST
ERR 56
INTT
ERR 57
EXTT
Acknowledgement by switching off and on again
Automatic acknowledgement when the cause of the alarm
has been eliminated
Manual acknowledgement with key
Slide
The metering slide gate
cannot be correctly closed
after being opened and closed
3 times
•
Check slide mechanism
•
Slide scrapes on inlet spout
•
Slide mechanically jammed, e.g. foreign objects
Leak
Excessive air loss in the
pneumatic control system
during operation with product.
•
Check for leakage
•
Check the air hoses
•
Check valves 1…4
•
Air filter
MYFC
The maximum dosage rate
TCON.FMAX was reached for
1 minute; now the product is
clogged
•
Check whether the selected TCON.FMAX
value was large enough. Reference value:
cleaning rate + 20 %
•
Check whether the level control is functioning correctly
MOZF (percent dampen.)
The sum of all connected
dosing elements has
exceeded the TCON.FMAX
value
•
Check whether TCON.FMAX is set correctly
•
Check the nominal value for the dosing elements
Relay MOZF
Relay does not work correctly.
The response at input D14 did
not occur within 5 seconds.
•
Check relay position
•
Tighten all screws on the hand switch
(also the unused contacts!)
•
Replace relay
•
Replace main board
Moisture
Calculated moisture is outside
of the tolerance range for
more than 60 s.
< 5.0 %…> 25.0 %
•
Check all measurements
•
Check the offset value
(can also be changed by HOST)
•
Check the PROD.CAL parameter
Internal temperature
Measured internal
temperature outside of the
tolerance range.
< –10 °C…> 70 °C
•
Check wiring between X50 and temperature sensor A
•
Jumper X60 on RUN-position?
•
Make new alignment
External temperature
Measured external
temperature outside of the
tolerance range.
< –5 °C…> +70 °C
•
Check wiring between X54 and temperature sensor A
•
Jumper X62 on RUN-position?
•
Make new alignment
MYFC-MOZF-66542-1-en-0803
M
When a foreign object blocks the measuring section, the
metering slide gate can be opened with the key at the
device (MZAH).
A
M
M
M
M
© Copyright 2008 Bühler AG
Moisture controller
Number
Meaning
Alarms and warnings MYFC and MOZF
O
A
M
ERR 58
HF
ERR 59
WT
ERR 60
NIV
65
Acknowledgement by switching off and on again
Automatic acknowledgement when the cause of the alarm
has been eliminated
Manual acknowledgement with key
Attenuation measurement
The measured attenuation lies
outside of the tolerance for
more than 60 s.
< 5…> 20 dB <= version 27A
< 3…> 20 dB >= version 27B
•
Check wiring between MYFC auxiliary board
and microwave unit
•
Check wiring between microwave unit and microwave
tongue
•
Are the SVV parameters set correctly?
The monitoring occurs as
soon as the MZAH-actual flow
and the MZAH-set flow are
greater than 0.
•
Make new alignment
Bulk density measurement
The measured bulk density
lies outside of the tolerance.
< –1.0 kg …> 10 kg
•
Check wiring between X55 and load cell
•
Can the measuring container move freely?
– Transport safety device removed
– No objects attached to the measuring container
•
Make new alignment
•
Replace load cell
•
Check wiring between X56 and load cell
•
Can the force measuring rod move freely?
– Not covered with dirt
•
Make new alignment
•
Replace load cell
Level
The measured level lies
outside of the tolerance.
< –5...> 500
M
A
A
ERR 61 Software
SWERR The internal security
monitoring has reacted
Bühler customer service must be contacted
immediately.
ERR 62
BOARD
Extension board
There is an error on the
extension board.
The exact cause can be found
under parameter SERV.ST2.
•
Is an extension board present?
•
Re-start the control
Unplug X1, wait a few seconds and plug in again
•
Replace extension board
Product probe
MOZL product probe has
recognized an error.
•
Check position and condition of MOZL
M
product probe.
Does the probe react only when product is present?
•
Check the times TCON.T1 and TCON.T2 and increase
if necessary.
ERR 63
FLOWD
ERR 64
*MOZE
MOZE alarm
A MOZE alarm has occurred.
MOZE alarms must be handled directly
at the MOZE; see also MOZE operating instructions
ERR 65
QMIN
Minimum permissible water
dosing rate
Minimum dosing rate fallen
short of for more than 60 s.
•
Increase nominal moisture or switch
on dry dampening
•
Check TCON.QMIN
© Copyright 2008 Bühler AG
M
O
M
M
MYFC-MOZF-66542-1-en-0803
66
Alarms and warnings MYFC and MOZF
Number
Meaning
Moisture controller
O
A
M
ERR 66
DMAX
ERR 67
Q TOL
Acknowledgement by switching off and on again
Automatic acknowledgement when the cause of the alarm
has been eliminated
Manual acknowledgement with key
Maximum water dosing rate
The calculated water dosing
rate exceeds the recipestipulated rate for more than
60 s.
•
Reduce nominal moisture
•
Check REC.DMAX
•
Increase pre-dampening if necessary
•
Reduce product flow if necessary
Water dosing value
The water dosing value lies
outside of the control
tolerance ±10 % for more than
120 s or the valves are not
closing properly any more.
The alarm is also triggered
when the control valve is at
the high or low limit position.
See parameter SERV.PWM
•
Check water supply
M
Is the water pressure correct? Could the lines and/or
filters be clogged?
Can the desired water quantity be dosed in manual
operation?
•
Check shut-off valves
Do the shut-off valves at the MOZF and at the
dampener (MOZL) open correctly?
•
Check water meter
Is the measurement value of the water meter correct
(calibrate)?
•
Check control valve
Standard values approx. 30…50 %.
If the display shows 10 % or 90 %, the control valve is
completely closed or fully open.
MYFC-MOZF-66542-1-en-0803
M
© Copyright 2008 Bühler AG
Moisture controller
Alarms and warnings MYFC and MOZF
67
10.2 Locking the product probe MOZL (ERR63 FLOWD)
This error message checks the product flow in the system and guarantees that the
product probe also functions dynamically. This increases safety dramatically
because the product probe is tested at each start and stop. The parameter
TCON.T2 is to be set for this monitoring. The setting must be made according to
the cleaning conditions. The time setting is dependent on the flow time the product
needs from the MYFC to the dampener. If no product probe is used, the parameter
TCON.T2 is to be set on 0. This deactivates the monitoring.
In addition, the product flow from the silo cell to the MYFC can be monitored with
the release signal. When the dosing release is on, the MYFC expects product to be
detected at the MYFC within the TCON.T1 time. If this is not the case, a
malfunction may be present in the transport or in the dosing element of the silo cell.
If the release signal is not used or this monitoring should not take place, then
TCON.T1 must be set on 0. This deactivates the monitoring.
Release 24 V
MYFC product
detected
< T1
< T1
Probe MOZL
product detected
< T2
3s
< T2
Fig. 10.1
If T1 or T2 are exceeded then ERR 63 is triggered and the water dosing is
stopped. The water is not stopped if the probe does not signal any product for
< 3 seconds.
It is also possible to fill in a dry state. In this case the release signal must be set on
0 V, or the moisture nominal value must be 0 %.
10.3 External 24 V alarm acknowledgement
It is possible to acknowledge alarms automatically. The signals are present on the
base PCB of the MOZF. No parameters have to be changed.
There are two versions available:
1. Clear alarm (pulse) DI7
The current alarm is cleared as soon as a positive side of 0 V to 24 V has
occurred on this input.
2. Clear alarm (release) DI8
The current alarm is cleared as soon as the release DI1 is no longer active.
To activate this function, the input must be wired to 24 V.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
68
Alarms and warnings MYFC and MOZF
Moisture controller
10.4 Parameter group SERV
MYFC
VER
MOZF Parameter group SERV (Service information)
VER
Input range
Program version (left) and data version (right)
–
DATE
DATE Date
1-1-00…31-12-99
TIME
TIME
Time (seconds = 80 -> clock stopped)
Normally the clock is turned on.
A battery test is made every 24 h only when the clock is turned on.
0-0-0…23-59-59
ERR
ERR
The 3 most actual alarms. On the left the newest, on the right the
oldest alarm.
–
Expanded alarm display:
Press the F-key to turn on the expanded alarm display. With the Fand plus-keys or the F- and minus-keys, the last 9 alarms can be
displayed. On each alarm the date and time of the alarm can be
displayed with the enter-key.
After the 9th alarm «CLEAR ALARM» is displayed. Here all alarms
can be erased with the enter key.
CPU
CPU
Computer workload in %
–
SADR
SADR System address for a program error
–
PCNT
PCNT Meter number voltage losses
–
DMS1
–
Voltage of the DMS input X9 on the motherboard (Baffle plate MZAH)
–
DMS2
–
Voltage of the DMS input X55 on the MYFC auxiliary board EBD1293
(Weight measuring container)
–
DMS3
–
Voltage of the DMS input X56 on the MYFC auxiliary board EBD1293
(Force level-measuring rod)
–
+10V
–
DMS sensor supply in V (is refreshed in Step 1 only)
–
AOUT
AOUT Analog output (actual current) in mA
Current can be set for tests when the calibration switch = CAL
–
–
AOU2 Analog output 2 (actual current) in mA
Current can be set for tests when the calibration switch = CAL
–
AIN
AIN
Analog input (actual current) in mA
–
DIN
DIN
Digital inputs 1…8 on motherboard (left DI1, right DI8)
–
–
DIN9
Digital inputs 9…14 on Option IO-extension
(left DI9, right DI14)
–
DO
DO
Digital outputs 1…8 on motherboard (left DO1, right DO8)
–
DO9
Digital outputs 9…16 on Option IO-extension
(left DO9, right DO16)
–
–
DO17 Digital outputs 17…20 on Option IO-extension
(left DO17, right DO20)
MYFC-MOZF-66542-1-en-0803
–
© Copyright 2008 Bühler AG
Moisture controller
MYFC
Alarms and warnings MYFC and MOZF
MOZF Parameter group SERV (Service information)
SIO
SIO
SIO2
SIO2
69
Input range
Serial interface RS-485 to host
(communication meter, command, error number)
Communication meter: Increases by 1 after each communication to
the correct address.
Command:
Actual command
Error number:
Error number of the communication
(see 66435-1)
–
Serial interface RS-485 (as in SIO)
The number at the left indicates the actual status of the internal
communication at the MYFC.
The number at the right is the error number.
–
0. = Internal communication turned off
1. = Water dosing device not found
2. = MOZE found as water dosing device
3. = MOZF found as water dosing device
4. = Two water dosing devices configurated
SIO3
–
Serial interface RS-485 (as in SIO)
–
ST1
–
Status of measurements and program step
–
Measurements:
0. = Measured values invalid
1. = Measured values valid
2. = Measured values stored
Program step Flowbalancer
0. = Calibrate
1. = Starting position
2. = Dosing stop / zero-set
3. = Dosing
4. = Standing time
5. = Measuring time
6. = Calculations
7. = Leakage test
8. = Valve test
ST2
–
Status of water dosing rate and extension board
–
W-XX: Status water dosing
0. = Water stopped
1. = Limit water dosing rate DMAX
2. = Limit water dosing rate QMAX
3. = Minimum water dosing rate QMIN fallen short of
4. = Normal operation (water can be dosed normally)
B-XX:
Extension board status
A decimal value is displayed in which the bits display the
individual states (errors).
Bit 0: = No extension board found
Bit 1: = AD converter defective
Bit 2: = Error in SVV-RAM-Test
Bit 3: = Auxiliary voltage 15 V outside of the tolerance
Bit 4: = Auxiliary voltage 5 VA outside of the tolerance
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
70
Alarms and warnings MYFC and MOZF
MYFC
MOZF Parameter group SERV (Service information)
P-DP
P-DP
Moisture controller
Input range
Profibus DP-Status display
(only displayed when the Profibus board is present)
–
0 = Timeout / communication interrupted
1 = Error when initializing
2 = No error
+15V
–
Display of the 15 V voltage of the MYFC extension board
–
+5VA
–
Display of the 5 V analog voltage of the MYFC extension board
–
HFIN
–
Display of the high-frequency input of the MYFC extension board
In normal operation approx. 1..3 volts should be displayed (approx.
10 dB)
–
VA
VA
FO…WAIT
SO…WAIT
SC…WAIT…FC
MYFC
Function test of the valve group
(Drive control of the metering slide gate)
Pressing the F-key will start the sequence:
FO
WAIT
SO
WAIT
SC
WAIT
FC
fast open
metering slide gate stops for approx. 3 seconds
slow open
metering slide gate stops for approx. 3 seconds
slow close
metering slide gate stops for approx. 3 seconds
fast close
MOZF
Functional test of the valves. No nominal water value can be entered.
The water is then dosed immediately, irrespective of release signals
and settings! The water is stopped again after 10 minutes or by the
F-key (in parameter SERV.VA).
From Version 26A onwards:
At the left a total sum counter is displayed 0.01l and at the right the
current actual rate. The total sum counter can be deleted by pressing
the lamp test key. This is necessary for checking the accuracy of the
water counter.
When the input key is pressed, the nominal value can be entered.
LK
–
–
CNT
Frequency of the water meter DI12
–
–
PWM
Pulse width modulation value of the proportional valve
–
PARP
Leakage test with simulator (special test for factory setting )
Test result visible on display (no alarm messages)
Start/Stop with F-key
PARP Activate parameter printout with F key
P SIO
P SIO2
P SIO3
R SIO
R SIO2
R SIO3
SUP
RUN
NOWT
ERR– / OK /
ERR+
SUP
[P SIO3]
Parameter output on SIO
Parameter output on SIO2
Parameter output on SIO3
Recipe output on SIO
Recipe output on SIO2
Recipe output on SIO3
ON
The super-user parameters are displayed
OFF
The super-user parameters are not displayed
After a Power-On the parameter is always automatically set to OFF
MYFC-MOZF-66542-1-en-0803
ON/OFF
[OFF]
© Copyright 2008 Bühler AG
Moisture controller
11
Maintenance
71
Maintenance
11.1 MYFC
11.1.1 Removing the measuring container
1. Empty the MYFC completely
2. Remove the inlet connection by undoing the upper screws (1)
3. Remove the inlet housing by undoing the six lateral screws (2)
4. Undo the knurled nut of the cable (3) on both sides of the shaft
5. Remove the three nuts (4) on both sides
6. Undo the two screws (5) on one side and remove support
7. Pull out the measuring container sideways
5
1
2
4
Fig. 11.1: Inlet box
3
Fig. 11.2: Removing the measuring
container
To assemble, follow the steps above in reverse order
Note:
After assembly a weight alignment must be made.
See 6.2.2 Alignment of the measuring container.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
72
Maintenance
Moisture controller
11.1.2 Sensor tongue
Removing the sensor tongue
1. Remove the measuring container (see 11.1.1)
2. Undo the slotted bolt (1) of the shaft on both sides
(e.g. with pitch gauge)
3. Undo the fillister screws (2) on one side and remove the adapter cone (3)
4. Carefully pull out the sensor tongue (4) with the disk (5)
5. Separate the disk from the tongue
4
5
2
3
1
1
Fig. 11.3
Measuring container
6
Fig. 11.4
Sensor tongue
Assembling the sensor tongue
1. First put sealing compound into the milled slot (6) of the disk (5) (the use of
Permabond Acryl 500 is compulsory). Scrape the sealing compound towards
the edge to stop water from entering after assembly.
2. Insert the sensor tongue carefully
(Caution: O-ring in disk; tongue must be vertical in the milled slot of the disk)
3. Put sealing compound into the milled slot of the second disk also
(the use of Permabond Acryl 500 is compulsory).
4. Insert the disk (5) over the tongue (4) until it stops at the measuring container
(the tongue must be in the milled slot of the disk)
5. Mount adapter cone (3)
6. On both sides carefully screw the bolt (1) in the shaft of the tongue.
7. Re-install the measuring container
Note:
After assembly the following adjustments must be made:
See 6.2.2 Alignment of the measuring container
See 6.2.6 Alignment of the microwave unit
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Maintenance
73
11.1.3 Single-point force transducer
1. Empty the MYFC completely
2. Undo the knurled nut (1) on both sides from the shaft
3. Loosen three nuts (2) on one side
4. Undo two screws (3) on both sides and remove support
5. The measuring container can now be placed in the funnel (as an alternative the
measuring container can also be removed)
6. Undo four lower screws (4) and pull out the force transducer
7. Remove the holder and distance holder from the transducer
3
2
1
4
Fig. 11.5
Measuring container
Fig. 11.6
Single-Point
Assembly in reverse order
•
•
•
During assembly make sure that the force transducer is in the correct position
Torque of the four lower and upper screws (4) to the force transducer: 14 Nm
Connection of DMS see 8.4
Note:
After assembly the following alignment must be made:
See 6.2.2 Alignment of the measuring container
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
74
Maintenance
Moisture controller
11.1.4 Force transducer
1. Remove the locking ring (1) on the outer part of the bar
2. Undo cable bracket (2)
3. Remove the force transducer by undoing the two screws (3).
During assembly in reverse order note the following:
•
•
•
Position the force transducer so that the bar (5) lies on the lower edge of the
bore hole (4) in the housing and can be turned easily in the force transducer.
Reseal the entry to the insulating tube with new shrinkable tubing or
Permabond.
Connection of the DMS see 8.4
2
5
1
4
5
3
Fig. 11.7
Force transducer
Fig. 11.8
Bore hole for bar
Note:
After assembly the following alignment must be made:
See 6.2.3 Alignment of the level measurement
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Maintenance
75
11.1.5 Diaphragm drive
To dismantle, remove the pin from the fork head.
The complete diaphragm drive is fastened to the feeder unit with four bolts
from the outside.
Initially only loosen these four bolts with the head on the outside.
• The diaphragm drive is held together by four bolts (8) with the heads
countersunk on the inside.
The shaft and nut of these bolts protrude on the outside.
If these four bolts (8) are loosened equally, all parts of the drive will become
detached.
•
•
Observe the following points for reassembling:
•
•
•
•
Clip the diaphragm plate (4) neatly into the operating diaphragm (3).
Place the compression spring (5) in the guide at the top and bottom.
Observe the position of the spring support (1) in relation to the top membrane
cover (2).
Ensure absolutely tight assembly.
2
3
5
4
8
Fig. 11.9
© Copyright 2008 Bühler AG
1
Fig. 11.10
MYFC-MOZF-66542-1-en-0803
76
Maintenance
Moisture controller
11.1.6 Inlet spout
1. Remove the pin from the fork head and open the metering slide gate (3)
completely.
2. In the case of the MZAH-25, also undo the countersunk screws (7) on both
sides.
3. The bottom four flange nuts (34) must be unscrewed during dismantling.
4. The four top flange nuts must remain in position in order to facilitate the
installation of the inlet spout (4) later.
5. The inlet spout (4) can be removed from one of the two door openings.
Observe when reassembling:
There must be a gap «S» of 0.5…1 mm between the metering slide gate (3)
and the inlet spout (4).
Check with a feeler gauge and by moving the slide gate. Corrections are
possible at the flange nuts (34).
•
•
S
34
4
3
7
Fig. 11.11
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Maintenance
77
11.1.7 Metering slide gate
1. Remove the pin from the fork head.
2. Loosen all six screws (three on each side), which are used to fasten the
complete metering slide gate (1) in the feeder unit.
3. Open the metering slide gate (1) fully and lift it vertically out of the guides.
4. The metering slide gate can be removed through the side openings.
5. All parts can now be dismantled from the outside towards the inside until the
metering slide gate (1) is freed as well.
Observe the following points for reassembling:
•
•
•
Reassemble in the reverse order.
Use sealed ball bearings (6) with permanent lubrication.
Check gap («S» = 0.5…1 mm) between the metering slide gate (1) and the
inlet spout.
1
6
Fig. 11.12
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
78
Maintenance
Moisture controller
11.1.8 Baffle plate
See pictures below
• To dismount, undo the nuts (36) in order to release the baffle plate (10).
• After replacing the baffle plate a weight alignment has to be carried out.
11.1.9 Protective bellows
See pictures below
1. Undo fitting screw (12a) (tightening torque Ma = 8 Nm).
2. Draw down baffle plate (10) with protective bellows (7).
3. Undo screws (32) and remove protective bellows (7).
4. Mount spare bellows with due caution.
• Reassemble in reverse order.
• After replacing the protective bellows a weight alignment has to be carried out.
11.1.10 Force transducer
See pictures below
1. Disconnect cable from force transducer.
2. Undo fitting screw (12a) (tightening torque Ma = 8 Nm).
3. Draw down baffle plate. Caution with protective bellows!
4. Undo fitting screws (12b).
• Reassemble in reverse order.
• Do not shorten the cable of the force transducer.
• After replacing the force transducer a weight alignment has to be carried out.
10
12b
36
12a
32
7
Fig. 11.13
Baffle plate
MYFC-MOZF-66542-1-en-0803
Fig. 11.14
Valves and force transducer
© Copyright 2008 Bühler AG
Moisture controller
Maintenance
79
11.2 MOZF
11.2.1 Water filter
1. The water filter must be cleaned periodically depending on the water quality.
2. Close shut-off valve
3. Open the drain cock of the water filter and press the air-bleed button at the
water filter
4. Open the filter housing and clean or replace the filter cartridge
5. After re-assembly, air-bleed the water filter
11.2.2 Shut-off valve
The shut-off valve generally requires no maintenance. In case of contamination or
if there is a malfunction, the valve can be cleaned.
Remove cover
Fig. 11.15
Remove diaphragm and
spring
Fig. 11.16
Now cleaning can be
performed
During assembly be sure
that the spring is not
jammed
Fig. 11.17
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
80
Maintenance
Moisture controller
11.2.3 Control valve
Undo the nuts and remove
the coil head
Fig. 11.18
Pull off the plastic cover and
undo the screws of the base
plate.
The individual parts can now
be cleaned.
Fig. 11.19
The piston must be able to
be moved freely.
Fig. 11.20
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Maintenance
81
11.2.4 Water meter
The water meter can be simply
disassembled. The sensor head
can be lifted off with a slight
turning movement after undoing
bolt 1.
Undo the four bolts 2 and then
lift off the top part. The water
wheel can now be cleaned and
checked.
1
Fig. 11.21
2
Fig. 11.22
© Copyright 2008 Bühler AG
Fig. 11.23
MYFC-MOZF-66542-1-en-0803
82
Maintenance
Moisture controller
11.2.5 One-way light scanner for 10…30 V DC (Telco probe)
Connection diagram
Load
brown
black
blue
Function
Infra-red light beam
Operating mode
Output-LED yellow
Light on
Off
Light off
On
Light on
On
Light off
Off
Control of water release, e.g. via MOZF control unit
Setting without product:
1. Switch on light scanner → LED green shines.
2. Turn potentiometer # 1 all the way to the right limit = light-on
3. Turn potentiometer # 2 from the left (–) to the right (+) until LED yellow shines,
then turn back so far until LED yellow goes out again.
Light scanner is ready for operation.
LED yellow
#1
LED green
#2
Operation with product:
When product flows through the fitting, the light scanner switches and LED yellow
shines.
LED yellow
MYFC-MOZF-66542-1-en-0803
LED green
© Copyright 2008 Bühler AG
Moisture controller
12
After-sales service
83
After-sales service
12.1 Spare parts
When ordering spare parts please use the spare parts catalog 7952 and the
relevant illustrations.
These parts represent only a small selection of the most important parts. Please
note that parts marked «b» should always be available as spare parts at the
customer's site, because if this part fails, manual water dosing is no longer
possible.
a Wear parts
b If defective: Automatic and manual mode no longer possible
c If defective: Automatic mode no longer possible, manual mode possible
MYFC
Part name
Part number
Weighing cell 150 kg 1-PW10D1
UXE –26528-011
c
1
–
Force transducer 3 Kg DB-11
UXE –26520-021
c
1
MDDM, MDDO
Resistance thermometer
UXE –26570-111
c
1
MYFB
Inlet spout
MZAH-82002-810
a
1
MZAH - 25
Segment slide
MZAH-80018-810
a
1
MZAH - 25
Baffle plate complete
MZAH-83009-810
a
1
MZAH - 25
MZAH-10002-010
c
1
MZAH
UNS-16072-113
c
4
MZAH
2) UXE-26522-142
c
1
MZAH - 25
c
1
MZAH
Valve assembly
without magnet coil
Magnet coil 24 V DC
Force transducer
Filter complete
Qty.
Also used for
1)
MZAH-95010-810
1) The new valve assembly MZAH-10002-010 is not equipped with magnet coils anymore.
A spare parts delivery for the valve assembly requires an additional 4 magnet coils.
2) Due to a change in the make/supplier of the force transducers not only the force transducer but
also the spare parts kit MZAH-80007-810 is required for the first spare parts delivery.
MOZF
Part name
Part number
Qty.
Also used for
Filter insert
MOZF 315, 1000, 2250
UNS –29015-011
a
1
MOZA, MOZD, MOZE
MOZF 4500
UNS –29015-071
a
1
Filter unit
MOZF H
UNS –29015-085
a
1
–
MOZF 315 C, 1000 C, 2250 C
UNS –29015-013
a
1
–
MOZF 4500C
UNS –29015-080
a
1
–
Filter unit
UNS –29015-071
a
2
MOZF 4500
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
84
After-sales service
Part name
Moisture controller
Part number
Qty.
Also used for
Solenoid valve 2/2-ways
MOZF
UNS –16014-413
b
1
–
MOZF H
UNS –16008-261
b
1
–
MOZF C
UNS –16014-513
b
1
–
MOZF 315, 1000, MOZF H
UNS –16100-413
c
1
–
MOZF 2250, 4500
UNS –16100-113
c
1
–
MOZF 315 C, 1000 C
UNS –16100-213
c
1
–
MOZF 2250 C, 4500 C
UNS –16100-313
c
1
–
MOZF 315, 1000, MOZF H
UNS –43041-001
c
1
–
MOZF 2250, 4500
UNS –43041-003
c
1
–
MOZF 315 C, 1000 C
UNS –43041-011
c
1
–
MOZF 2250 C, 4500 C
UNS –43041-013
c
1
–
Solenoid control valve 2/2-ways
Flow meter
Control system MYFC & MOZF
Part name
Part number
Qty.
Relay 24 V
(MOZF)
UNE-28040-651
b
1
Base PC-board EBD1268
(EKP-83121-810)
c
1
EPROM
with the latest program version
(MYFC/MOZF)
EKP-85228-810
Also used for
Bühler check weighers with
MEAF
–
Display unit
(MYFC/MOZF)
EKP-84172-810
c
1
Bühler check weighers with
MEAF
EBD1269 Mains / relay module
(MYFC up until October 2004
delivery)
EKP-84169-810
c
1
Bühler check weighers with
MEAF
EBD1293 MEAF-extension
(MYFC)
EKP-84235-810
c
1
–
Profibus with connector
(MYFC)
EKP-83122-930
c
1
Bühler check weighers with
MEAF
Microwave assembly
(MYFC)
EKP-84144-810
c
1
MYFB
Power pack AC 115/230 V
(MOZF and also MYFC from
October 2004 delivery onwards)
UNE-80206-001
c
1
MYRE
I/O-extension EBD1270
(MOZF)
EKP-84170-810
c
1
Bühler check weighers with
MEAF
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
After-sales service
85
12.2 Address
Bühler AG
Customer Service Grain Processing
CH-9240 Uzwil, Switzerland
Phone +41 71 955 30 40
Fax +41 71 955 33 05
service.gp@buhlergroup.com
Note:
When making any inquiries at Bühler AG use the information on the machine
identification plate to identify the machine.
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
86
Appendix
13
Appendix
Moisture controller
13.1 Parameter list MYFC
Plant:.................................................... Name: ............................................................ Date:...........................
Parameter [Default]
SYS
Set Value
Parameter [Default]
SVV
REM
DISP
AINV
IMP
AO
AI
SD
INIT
=
=
=
=
=
=
=
–
A1
B1
C1
A2
B2
C2
P
CALT
PROD
CAL0
CAL1
CAL4
CAL5
[0.40]
[400.00]
[0.75]
[0.50]
[280.00]
[0.75]
[80.0]
[+0.05]
0
[+15.781]
[+1.245]
[-1.638]
[-0.100]
TCON
MODE
FMAX
FCOR
T1
T2
QMIN
QMAX
[MOIST]
[60.000]
[100.0]
[3600]
[300]
[0.0]
[4500.0]
[LOC]
[OFF]
[ON]
[100]
[OFF]
[OFF]
[0]
–
ADC
FLO
ZFLO
CFLO
NIVS
ZNIV
WT
ZWT
CWT
INTT
CINT
EXTT
CEXT
HF
CHF
–
–
[6.000]
[60]
–
–
–
[3.000]
–
[-258.2]
–
[-258.2]
–
[10.00]
–
–
=
=
–
–
–
=
–
=
–
=
–
=
HOST
ADR
BAUD
TOUT
[0]
[4800]
[60]
=
=
=
MYFC-MOZF-66542-1-en-0803
Set Value
Enter settings from
microwave module
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
© Copyright 2008 Bühler AG
Moisture controller
Appendix
87
13.2 Recipe list MYFC
Plant:.................................................... Name: ............................................................ Date: ..........................
No. MOIS
[0]
PROD
OFFS
DMAX
Notes
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
88
Appendix
Moisture controller
13.3 Parameter list MOZF
Plant:.................................................... Name: ............................................................ Date:...........................
Parameter
SYS
REM
DISP
AINV
IMP
AO
AI
SD
INIT
[Default]
Set value
[REMS]
[OFF]
[ON]
[10.0]
[0mA]
[0mA]
[USER.H2O]
–
=
=
=
=
=
=
=
–
HOST
ADR
BAUD
TOUT
[1]
[4800]
[60]
=
=
=
TCON
MODE
FMAX
QMAX
T1
WDLY
QMIN
WCNT
CTRL
[MYFC]
[100.000]
[4500.0]
[3600]
[0]
[0.0]
[105.7]
[1]
Parameter [Default]
Set value
=
2) =
=
1) =
=
1) =
=
2) =
1) Only displayed if MODE = L-DOS or %-DOS
2) Only displayed if MODE = %-DOS
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Appendix
89
13.4 MYFC-65005 overview
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
90
Appendix
Moisture controller
13.5 MYFC-65000 dimensional drawing
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Appendix
91
13.6 MOZF-65000 dimensional drawing standard and hot water version
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
92
Appendix
Moisture controller
13.7 MOZF-65007 dimensional drawing chlorine version
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG
Moisture controller
Appendix
93
13.8 Wiring diagram MOZF
© Copyright 2008 Bühler AG
MYFC-MOZF-66542-1-en-0803
94
Appendix
Moisture controller
13.9 Sample taking
In order to check the MYFC only product before or directly after dampening should
be used. Samples from B1 or even flour samples are out of the question, because
they have been exposed to different environmental influences since dampening.
The samples must be filled into glass jars and closed airtight. Freshly dampened
product should frequently shaken for 15 min after extraction to stop the swelling
product from sticking together.
When taking samples the average current moisture, the current dosing rate and the
time of the sample taking have to be noted down. Thus it is possible to check the
operation of the automatic moisture control together with the laboratory results.
13.10 Moisture determination in the laboratory
Practice has shown that only the carefully applied standard method according to
ICC-Standard No. 110/1 provides reliable moisture values. We strongly advise
against quick determinations for dampened products.
Basic application of the standard method according to ICC-Standard N0. 110/1:
(For details please refer to the Standard)
Material:
• Glass jars with airtight cover
• Metal or glass dishes
• Laboratory scale with a resolution of 1 mg
• Laboratory mill
• Drying cabinet (130 °C)
• Exsiccator
1. Taking a sample:
• Let wheat stand for min. 12 h in airtight closed glass jar.
• Shake the glass jar frequently for the first 5…10 min to stop the wheat from
sticking together.
2. Pre-drying (only if moisture > 15 %)
• Weigh 20…35 g whole kernels of wheat into dish.
Æ Weighing 1
• Pre-dry it in the oven for exactly 30 min at 130 °C.
• Cooling at room temperature.
• Reweighing
Æ Reweighing 1
Æ Coarse water = Weighing 1 – Reweighing 1
3.
•
•
•
•
•
•
Standard determination:
Mill pre-dried wheat.
Weigh exactly 10.000 g into dish.
Dry it in the oven for exactly 90 min at 130 °C.
Cooling in the exsiccator
Tare scale with 10.000 g.
Reweighing (displayed weight in g * 10 = moisture loss in %)
Æ Reweighing 2
Æ Fine water = (Reweighing 2 : 100) x Reweighing 1
Æ Total water = Coarse water + Fine water
Æ Moisture = (Total water x 100) : Weighing 1
MYFC-MOZF-66542-1-en-0803
© Copyright 2008 Bühler AG