ModWeigh MW95A User manual

Belt Weigher Instrument MW95A
Instruction Manual ALL
MW95A_IM_ALL_SV6.09f_en EMC INDUSTRIAL GROUP LTD
F ATUR S
• Flowrate measurement for belt weighers
• Flowrate Output
• Material Totaliser
• Modbus communications (independent
RS232 and RS485 ports)
• USB Host & Device (memory stick & PC)
• Field software upgrades
• 12-24Vdc power supply
• Overall accuracy better than 0.01%
MD2,MP2 INDICATOR
• IP54 Facia
• 2.8" (70mm) colour LCD
• 320 x 240 pixels
• Polyester film tactile keypad
• 4-20mA output, 1 digital input & 2 digi-
tal outputs
MO3 I/O for MP2
• 4 Digital inputs
• 4 Digital outputs
• 4-20mA input (or 0-10V)
• 4-20mA output
MD1,MP1 INDICATOR
• IP65 Facia
• 4.3" (109mm) colour LCD
• 480 x 272 pixels
• Silicone tactile keypad
MT1 TRANSMITT R
• Size 136 x 66 x 50mm
• Optional removable P-Module holds cali-
bration settings
MT3 TRANSMITT R
• Size 136 x 66 x 50mm
MR1 I/O
• Size 136 x 66 x 30mm
• 8 Digital inputs
• 8 Digital outputs
• 4-20mA input (or 0-10V)
• 4-20mA output x 2
• Pulse output
INCLUD S
• Installation
• Setting up principles
• Setup Summary
• I/O Function Table
• Operation
• Alarms
APPLI S TO
• MW95A - Belt Weigher -Module
• MT1,MT3 - Transmitters
• MD1,MD2 - Display
• M 1,M 2 - rocessor
• MR1 - Remote IO
• Software v6.09 onwards
MR1
MT3 MT1
MD2,M 2
MD1,M 1
Fmaterial feed
D02
L
loadcell Tspeed tacho

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AVAILABL DOCUM NTATION
CO YRIGHT © 2021 by EMC Industrial Group Ltd
56 Tarndale Grove, Albany, North Shore, Auckland 0632
O Box 101 444 North Shore, Auckland 0745, New Zealand
Telephone [phone], Facsimile [phone]
E-mail [e-mail] Web http://www.emc.co.nz
As we are continuously improving our products, changes to this specification may occur without notice.
(Document Details: g0 g1 g2 g3 g4 g5 g6 g7 g8 g9 g10 g11 g12 g13 g14 g15 MT1,MT3,MD1,MD2,M 1,M 2))
PRODUCT D SCRIPTION DOCUM NTATION
MW61 Weigher Instrument Technical Information
Instruction Manual
MW64 Batch Weigher Instrument Technical Information
Instruction Manual
MW65 rocess Weigher Instrument Technical Information
Instruction Manual
MW93 Weight Change Instrument Technical Information
Instruction Manual
MW94 Impact Flowmeter Instrument Technical Information
Instruction Manual
MW95 Belt Weigher Instrument Technical Information
Instruction Manual
MW96 Weighfeeder Instrument Technical Information
Instruction Manual

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Contents
INTRODUCTION ....................................................... 5
Features 5
Basic 5
Inputs 5
Internal Signals 5
Outputs 6
Communications & Display 6
IO Summary 6
Specifications 7
Loadcell Input AI1 7
Analog Input AI2 7
Analog Outputs AO1 & AO2 7
ulse Input IN0 - frequency input 7
Digital Inputs INx (except IN0) 8
ulse Output OUT0 8
Digital Outputs OUTx (except OUT0) 8
Communications COM1, COM2 & COM3 8
General 8
INSTALLATION ......................................................... 8
Dimensions 9
MD2 Display 9
M 2 rocessor 9
MD1 Display 9
M 1 rocessor 9
MT1 Transmitter 9
MT3 Transmitter 9
MR1 Remote IO 9
Connections 9
Motor integration 9
Batch Weighing 10
Belt Track Switches 11
Calibration control I/O 11
Run/Stop/ ause Logic 12
Connection rinciples 12
Connection Diagram – M 2 13
Connection Diagram – M 1 14
Connection Diagram – MT1 15
Connection Diagram – MT3 16
Loadcell Connections 16
Tacho Connections 17
Internal Tacho 17
Multidrop Systems 18
S TTING UP ........................................................... 18
Setup 18
Description 18
Keypad 20
Displaying the Setup Menus 20
Selecting a Menu Item 20
Description of Menus 21
To Adjust A Setting 21
Macros 22
Macro Codes 22
Adjusting a Macro 25
Software Updating 26
Update with USB Drive 26
Update with a C 27
S TTING UP GUID ................................................. 27
Settings 27
Quick Keys 27
Quick Keys Reference 27
Initial Setup 28
Engineering Units 28
Measuring Range 28
Display Resolution 28
Belt Revs To Calibrate 28
latform Length 28
Calibrate Belt Speed & Length 29
Given Belt Length 29
With a Calibrated Tacho Wheel 29
With Hand Held Tachometer 29
Calibrate Weight 29
Belt Stopped 29
Belt Running 30
Belt Running & Calibrate Speed 30
Calibrate Correction Factor 30
Material Testing 30
Material Testing with Manual Change 30
Material Testing with Automatic Change 30
Using Chains 31
Using Chains & Belt Length 31
No Correction 31
Re-Calibration 31
S TUP – MW95A B LT W IGH R............................. 32
Basic Settings 32
Engineering units 32
Measuring range 32
Display resolution 32
Trade setup 32
Clock 33
Inputs 33
Digital inputs 33
Tacho & Belt lengths 33
Enter the Tacho Constant 34
Enter Known Belt Speed 34
Enter latform Length 34
Enter Belt Length 34
Loadcell input (platform weight) 35
Calibrate loadcell 36
Calibrate Using Loadcell Specifications 36
Current/Voltage input 38
Internal Signals 38
Weight 38
Flowrate 39
Totaliser 39
Limits 40
Events/Alarms/Faults 40

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Memory Storage 41
User data 42
Outputs 42
Analog output 1 (flowrate) 42
Analog output 2 (platform weight) 42
Digital outputs 43
Communications & Display 43
Comms port 1 - RS232 43
Comms port 2 - RS485 44
Comms port 3 - RS485 MR1 44
Interface registers 44
rinting & Macros 45
Display (MD1,MD2,M 1,M 2) 47
USB 49
Info, Resets & Final Cal 49
roduct Information 49
Reset settings 50
Reset macros 50
Final calibration 50
Remote Operation of Calibration 52
S TUP – DISPLAY ................................................... 52
Basic Settings 52
Clock 52
Communications & Display 53
Comms port 1 – RS232 53
Comms port 2 – RS485 53
Display 53
CompactCom 54
Information & Resets 54
roduct Information 54
Reset settings 54
Other display settings 54
I/O Function Table 54
OP RATING D TAILS .............................................. 57
Belt Speed Fault Detection 57
Flowrate Calculation 57
Modbus Access 57
OP RATION ............................................................ 58
Display 58
Keys 59
Operator Menu 59
Actions 60
Settings 60
Alarm menu 60

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INTRODUCTION
Features
Basic
Units & Resolution
The units for each variable type (weight etc.) can be selected from a list of metric and imperial units.
The resolution of each variable type can be adjusted, this alters the count by e.g 100kg displayed in
0.2kg increments.
OIML Design
The instrument is designed to OIML standards.
Language Support
Support is available for the following languages: English, Chinese, Korean, German, Spanish, French,
Italian and olish.
Inputs
Digital Inputs INx
The digital inputs are programmable to a range of function including ‘acquire zero’, ‘print’ etc.
Direct & Dynamic Calibration
Direct calibration uses the loadcell capacity and loadcell sensitivity to calibrate the weight signal. Dy-
namic calibration allows calibration of the weight while the belt is moving knowing the platform weight
(kg) or the belt loading (kg/m). This is useful when calibrating is done using chains.
Corner Adjustment (MT1 only)
The input sensitivity can be individually adjusted for up to 4 loadcells, allowing differences in loadcell
sensitivities to be corrected.
Four Loadcell Inputs (MT1 only)
Separate inputs are available for 4 loadcells allowing the signal of each to be monitored sperately. This
provide an aid for load balancing across loadcells and also for fault finding.
Tacho Input
The tacho input is used to measure the belt speed and belt travel. Basic calibration is done using a ta-
cho constant setting.
The system can be used to calibrate the tacho by measuring the number of pulses as a known length of
belt passes a point. Other belt lengths can be measured in a similar manner.
Zeroing
The weight of the unloaded belt is averaged over one complete belt revolution and the resulting value is
stored as the dynamic zero.
The zeroing can be semi-automated by using an output signal to stop the material feed onto the belt,
waiting until the belt is empty, performing the zero averaging, restarting the feed and waiting until ma-
terial has reached the weigh point before returning to flow control.
Auto zeroing continuously monitors the platform weight. Any small drift in the weight measurement or
material build up on the weigh platform is automatically zeroed out. This ensures that with no product
on the belt, a zero flowrate is recorded.
Signal Filtering
Filtering for the weight can be adjusted to get the optimum compromise between reduction of plant vi-
bration and response speed.
Internal Signals
Limits
The high and low limits have adjustable setpoints which may be programmed to operate on any internal
signal.
Batching
The system can be used to batch out a desired weight by stopping the feeder when the batch weight
has been totalised. A pre-act is available to compensate for overrun.
vent Collection
rocess events are collected for operation with external equipment ( LCs etc.)
Memory Storage
Allows a group of settings to be stored or recalled from memory. This can be used for example to store
settings for different products. There are 20 memory locations with up to 4 settings in each.
Material Total
The processor incorporates a totaliser which totalises the weight of material through the system. The
totaliser can be reset to zero. A pulse output is available to operate external counters. A low flow cutout
ensures that low flows do not cause false counts. The total is retained after a power failure.

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The totaliser can be set to operate with 5, 6, 7 or 8 digits.
Outputs
Material Flowrate
An analog flowrate output signal is available for connection to other instruments.
Analog I/O Scaling
The analog output range can be adjusted over the full 0 to 20mA range. The output will drive to a slight
negative mA, allowing a live zero to be achieved when using a 0 to 20mA range. A voltage output is
easily produced by connecting a resistor to the output.
In addition the analog output signal is selectable to come from any internal signal in the instrument e.g
weight, flowrate etc.
Digital Outputs OUTx
The digital outputs are programmable to operate from any internal signal. These signals include the
digital input states, status conditions (running, paused etc) and any fault conditions that are detected.
This makes it easy connect into other systems.
Communications & Display
Comms
RS232 and RS485 ports are available. These are used to connect ModWeigh units together and also to
connect to other systems. The protocol is either ASCII output for example to drive a printer or Modbus
for interactive communications. Baud rates and node addresses are programmable.
USB host and device ports are available. This allows for example C and USB flash drive connectivity. It
can be used to update the units software, for data logging and for recording of the units settings.
Printouts & Macros
rintouts can be triggered by a key press or set up to occur at set times during the day or week. Data
may also be output continuously for data collection purposes. Data is output on the COM1 RS232 port.
The content of the printouts is fully programmable using Macros.
Macros are programs used to customise printouts, but can also be used to perform arithmetic calcula-
tions. The Macro language also contains conditional terms for more advanced programming.
Display Customisation
Locks may be set to prevent unauthorised use of the operator keys and restrict entry to the operator
menu. The keys are individually lockable and optionally a passcode can be used to allow authorised op-
erators to use the keys. Alternatively a confirmation of the key action can be requested.The operator
MENU can be customised to make additional settings or signals available to the operator.
The contents of the main display can be set to suit any condition, from a comprehensive display show-
ing all operating parameters to a simple display showing the basic signals.
Computer Connectivity
ModWeigh instruments can be connected to a computer withan RS232 connection. Data can be sent to
the C at a preset rate. The data sent can be set up using macros.
There is also a command line interface which allows any of the settings and data to be read or written.
IO Summary
Digital Inputs (includes pulse input) NAMUR pulse input option Digital Outputs (includes pulse output) Isolated ulse Output Isolated 4-20mA Inputs Isolated 4-20mA Outputs RS232 RS485 USB Host (Memory Stick) USB Device ( C Cable) Corner adjustment and bal- ancing for 4 loadcells
Trade approvals (MW95,
MW96)

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Digital Inputs (includes pulse input) NAMUR pulse input option Digital Outputs (includes pulse output) Isolated ulse Output Isolated 4-20mA Inputs Isolated 4-20mA Outputs RS232 RS485 USB Host (Memory Stick) USB Device ( C Cable) Corner adjustment and bal- ancing for 4 loadcells
Trade approvals (MW95,
MW96)
M 2 1  2 1 0 1 1 1 1 1  
M 2,MO3 1+4  2+4 1 1 1+1 1 1 1 1  
M 1,MR1 1+8  9 1 1 2 2 1 1 1  
MD1,MT1,MR1 2+8  1+9 1 1 2 2 2 1 1  
MD2,MT1,MR1 2+8  1+9 1 1 2 2 2 1 1  
MD1,MT3 2  1 0 0 1 2 1 1 1  
MD2,MT3 2  1 0 0 1 2 1 1 1  
MD1,MT3,MR1 2+8  8 1 1 3 2 1 1 1  
MD2,MT3,MR1 2+8  8 1 1 3 2 1 1 1  
Specifications
Loadcell Input AI1
Input Range ±4 mV/V (0-20mV)
Excitation 5 Vdc ±20 %, 250 mA maximum current
Signal processing rate 100 Hz (response time setting≤ 0.5 s)
Input sensitivity 0.5 µV/division maximum
Zero range ±3 mV/V (±15 mV)
Zero drift ±0.02 µV+0.0005 % of deadload/°C typical
Span drift ±0.0005 %/°C typical
Non-linearity ‹0.002 % of FS
Input noise 0.15 µVp-p typical
Filtering 0.04 s to 32.0 s response time adjustable
Sense voltage range 1-5 V
Analog Input AI2
4-20mA input resistance <60 Ω
0-10V input resistance ›100 kΩ
Isolation galvanically isolated to 50Vac
Analog Outputs AO1 & AO2
Output range 0 to 20 mA (-0.2 mA to 21 mA, includes standard 4-20mA)
Maximum load 1000Ω
Resolution 0.4 µA
Response time Loadcell response time setting + 20 ms
Voltage output Use an external resistor to convert mA to volts.
For example 500Ω gives 10 V at 20 mA.
Non-linearity ‹0.01 %
Drift ‹2 µA/°C.
Isolation independently galvanically isolated to 50Vac
Pulse Input IN0 - frequency input
Maximum range 0.01Hz to 4 kHz
Typical operating range 10 to 1000 Hz
Minimum pulse width 50us
IN0 set to PNP
High voltage › 8 V
Low voltage ‹ 4 V
Maximum voltage 32 V
Input load 4 kΩ approximate
IN0 set to NAMUR

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Terminal voltage 8 V
Switching threshold 1.55 mA
Hysteresis 0.2 mA
Namur fault ‹0.1 mA or ›6 mA
IN0 set to AC
Voltage range 0.2 to 50 Vac
Digital Inputs INx (except IN0)
High voltage › 8 V
Low voltage ‹ 4 V
Maximum voltage 32 V
Input load 6 kΩapproximate
Input type N output sensors
Pulse Output OUT0
Max output current 50 mA
Max working voltage 30V ac/dc
Max frequency 500 Hz
Duty cycle 50 % ±20 % (f › 0.5 Hz)
Max output pulse time 1000 ms (f ‹ 0.5 Hz)
Isolation galvanically isolated to 50 Vac
Digital Outputs OUTx (except OUT0)
Max output current Σ IIOx < 0.25 A
Output voltage same as supply voltage
Communications COM1, COM2 & COM3
COM1 Interface RS232
COM1 Handshake CTS can be enabled
COM2/COM3 Interface RS485
Baud rates 9600, 19200, 38400, 57600, 115200 (230400 on COM2)
Settings 8 data bits, no parity, 2 stop bits (8-N-2)
rotocol Modbus RTU (MWBUS on COM2)
General
I Rating I 20 (MD1,M 1 facia I 65) (MD2,M 2 facia I 54)
Operating temperature -10 to 45 °C
Supply voltage 10 to 28 Vdc
ower MT1 1.0 to 2.2 W + Tacho Excitation
ower MT3 1.0 to 2.2 W + Tacho Excitation
ower MR1 1.5 to 2.5 W + OUTx
ower MD1 1.8 W
ower M 1 1.8 to 3.0 W
ower MD2 1.4 W
ower M 2 1.4 to 3.1 W
ower M 2 + MO3 3.4 to 5.0 W + OUTx + Tacho Excitation
M 2 Restrictions Loadcell Excitation + AO1 + AO2 < 1.5 W
ISupply < 0.5 A
INSTALLATION
The instrumentation must be mechanically installed and then the electrical connections made. The im-
portant electrical connections are as follows.
ower supply connections: 24Vdc fused or current limited to 5A.
Communications: A shielded cable is recommended to connect units together with COM2. It can extend
up to 500m. This leaves COM1 (RS232) free for other applications. For a cable length over 50m, MAT
line terminators must be fitted at each end of the cable.
Loadcell connections: For cable runs less than 20m, a 4 wire connection should be adequate. For longer
cable lengths, a 6 wire connection is recommended.
Tacho connections: A shielded cable should be used.
The MT1 tacho input can connect to a sensor with N , NAMUR or AC output. Before operating the ta-
cho, the sensor type must be set. See setting Q2220.
Some additional optional connections are as follows.

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A remote totaliser.
The 4-20mA measured flowrate output.
Belt tracking switches to detect belt miss-alignment.
The ‘calibration control’ input for remote operation of basic calibration functions.
Dimensions
Following are the dimensions of the hardware items that make up the system.
The displays/processors are designed for panel mounting.
MD2 Display
MP2 Processor
MD1 Display
MP1 Processor
MT1 Transmitter
MT3 Transmitter
MR1 Remote IO
Connections
Motor integration
The following diagrams show various methods to connect a ModWeigh to a VSD drive or motor contac-
tor.
VSD Drive, keypad run/stop
ModWeigh keypad used to start and stop the system. Can be used for batching applications.
VSD run input
run motor [OUT3, 56]
+24V 0V
NOT stop [INx, -1]
VSD OK
136mm
66mm
20mm
8mm
optional DIN rail mount
approx. 35
0g
156mm
86mm
136mm
66mm
20mm
50mm
8mm
optional DIN rail mount
approx. 35
0g
136mm
66mm
20mm
50mm
8mm
optional DIN rail mount
approx. 35
0g
ANEL cut out
186 x 92 mm
-0.0 + 1.0 mm
FACIA
208 x 104 mm
top view
approx. 450g
104mm
30mm
8mm
208mm
ANEL cut out
138 x 67 mm
-0.0 + 1.0 mm
FACIA
144 x 72 mm
top view
approx. 400g
72mm
80mm
9mm
144mm

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VSD Drive, VSD run/stop
ModWeigh slaved from VSD running signal.
• disable START key
• do not use start function
VSD drive, start/stop buttons
External START / STO buttons connected to ModWeigh instrument driving motor VSD.
Motor Contactor, keypad run/stop
ModWeigh keypad used to start and stop system. Contactor used to run motor.
Motor Contactor, run/stop buttons
External START / STO buttons connected to ModWeigh instrument controlling motor contactor.
• disable START key
• do not use start function
Batch Weighing
xternal Buttons for Batching – Method 1
When START is pressed, the total is reset and the motor started. ressing STO at anytime stops the
motor. If CONTINUE is pressed with the total weight below the batch weight, the motor will start with-
out resetting the total.
• disable START key
xternal Buttons for Batching – Method 2
ressing START resets the total and starts the motor. ressing AUSE stops the motor. If paused, the
batch may be continued by pressing START. ressing STO stops the motor and aborts the batch.
motor contactor (mc)
0V
run motor [OUT3, 56]
+24V
START
batch start [INx, 29]
CONTINUE
start [INx, 27]
STO
NOT stop [INx, -1]
+24V 0V
mc
START
run [IN3, 2]
STO
motor contactor (mc)
overload
mc
motor contactor
run motor
[OUT3, 56]
+24V 0V
NOT stop [INx, -1]
overload
overload
VSD run input
run motor [OUT3, 56]
+24V 0V
NOT stop [INx, -1]
VSD OK
start [INx, 27]
START
STO
run [IN3,2]
VSD running signal
+24V 0V

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• disable START key
xternal Buttons for Batching – Method 3
ressing START will reset the total and start the motor. If running, pressing AUSE/STO will stop the
motor and pause. ressing AUSE/STO a second time will cancel the pause and abort the batch. ress-
ing START when the controller is paused will start the motor without resetting the total.
• disable START key
Belt Track Switches
Used to detect belt miss-alignment, raise an alarm and stop the conveyor. The input function must be
set to 11.
Calibration control I/O
One of the digital inputs can be wired to a push button located near the weighing system. It can also be
wired to a sensor which generates one pulse at each belt rotation. See the section ‘Remote Operation of
Calibration’. The input function must be set to 46.
One of the digital outputs can be wired to an indicator lamp to show when a measurement is in pro-
gress. The output function must be set to 71.
0V +24V
calibration indicator [OUTx, 71]
CALIBRATION INDICATOR
0V +24V
CALIBRATION CONTROL
calibration control [INx, 46]
BELT SENSOR
+24V 0V
NOT belt track switch [INx, -11]
belt track switches
pause/stop [INx, 31]
motor contactor (mc)
0V
run motor [OUT3, 56]
+24V
START
batch start [INx, 29]
AUSE/STO
paused [OUTx, 58] AUSED
pause [INx, 30]
motor contactor (mc)
0V
run motor [OUT3, 56]
+24V
START
batch start [INx, 29]
AUSE
STO
NOT stop [INx, -1]

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Key
Run/Stop/Pause Logic
The following table describes how the status is affected by the inputs.
Inputs (Control1) Outputs (Status1)
stop run pause start running paused run motor
1 X X X 0 0 0
0 1 0 X 1 0 1
0 0 0 0 * 0 0 0
0 X 1 X NC 1 0
0 0 0  1 0 1
0 0 1  1 1 0
K Y
ntry Description
0 input or output off
1 input or output on
X don’t care (either on or off)
NC no change
 rising edge (input turns on)
* remains off since last stop
Connection Principles
ModWeigh instruments can be configured in many different ways to suit any given application.
The display is normally located to suit an operator. The transmitter can be located in the field to reduce
field wiring or can be located with the display for a more conventional approach.
The I/O can conveniently be situated on a DIN rail in a cabinet.
ModWeigh digital output
+
−
AOx
ModWeigh digital input
ModWeigh analog output
[OUTx,
output function
]
[INx, input function]

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Connection Diagram – MP2
D
1
D
2
D
3
D
4
D
5
Analog
+AO2
−
AO2
+VAI2
+mAAI2
−
AI2
pulse output
running
run motor
healthy
no function
acquire zero
run
enable internal tacho
M 2
2
3
4
5
6
7
8
2
3
4
6
7
20
RXD
DSR
SG
DTR
CTS
RTS
RXD
TXD
CTS
DSR
SG
DTR
1
2
3
4
5
6
RTS
TXD
0V
0V
RXD
CTS
RJ12
Loadcell
Power/COM2
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
24V
0V
COM1
MAC
MAP
DB25M
t
o
rinter
optional belt angle input
flowrate
LOADC LL
(s)
optional sense for 6 wire
connection
B LT SP D TACHO
+
0
V
output
B
1
B
2
B
3
B
4
B
5
B
6
I/O
+AO1
−
AO1
+/~ OUT0
−
/~ OUT0
OUT9
IN9
B7
0V
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
8
C
9
Digital
I/O
OUT1
OUT2
OUT3
OUT4
{MT1}
IN1
IN2
IN3
IN4
24V
C10
0V
TOTALIS R
input
0
V
platform weight
POW R SUPPLY
+24V
0
V
A1
A
2
run motor
acquire zero
MO3 OPTION
24V
TOTALIS R
input
0V
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
H1
H2
H3
V1
V2
V3
K1
K2
K3
K4
K5
O1
O2
O3
O4
O5
O6
O7
O8
O9
U1
U2
M1
M2
M3
M4
Digital Inputs
Power/COM2
Digital Outputs
Pulse Output
Analog Outputs
COM3
Analog Input 2
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
24V
0V
24V
0V
+
D
−
D
ADS
OUT1
OUT2
OUT3
OUT4
{MT1}
OUT5
OUT6
OUT7
OUT8
0V
+mAO2
−
mAO2
+mAO1
−
mAO1
+/~ OUT0
−
/~ OUT0
+D
−
D
0V
+VI2
+mAI2
−
AI2
pulse output
running
run motor
healthy
weight fault
belt speed fault
material feed
alarm alert
to
C, LC
or
ModWeigh Display
MD1,MD2
optional belt angle input
platform weight
flowrate
no function
acquire zero
run
enable internal tacho
print
print total
stop
pause
A
3
A
4
A
5
+
D
−
D
IN0
t
o C/ LC
TXD
MAD
DB9F
MR1
Address Select ADS
1
2
3
4
5
24V
0V
+
D
−
D
ADS
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
R
1k
2k2
4k7
10k
22k
47k
100k
4
5
6
7
8
9
10
1
2
3
Keep all wiring separated
from mains wiring
Use shielded cable where
indicated

MC INDUSTRIAL GROUP LTD Connections
MW95A_IM_ALL_SV6.09f_en 14/61
Connection Diagram – MP1
TOTALIS R
input
0V
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
H1
H2
H3
V1
V2
V3
K1
K2
K3
K4
K5
O1
O2
O3
O4
O5
O6
O7
O8
O9
U1
U2
M1
M2
M3
M4
Digital Inputs
Power/COM2
Digital Outputs
Pulse Output
Analog Outputs
COM3
Analog Input 2
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
24V
0V
24V
0V
+
D
−
D
ADS
OUT1
OUT2
OUT3
OUT4
{MT1}
OUT5
OUT6
OUT7
OUT8
0V
+mAO2
−
mAO2
+mAO1
−
mAO1
+/~ OUT0
−
/~ OUT0
+D
−
D
0V
+VI2
+mAI2
−
AI2
pulse output
running
run motor
healthy
weight fault
belt speed fault
material feed
alarm alert
M 1
MR1
2
3
4
6
7
20
RXD
TXD
CTS
DSR
SG
DTR
MAC
MAP
DB25M
t
o
rinter
to
C, LC
or
ModWeigh Display
MD1,MD2
optional belt angle input
platform weight
flowrate
no function
acquire zero
run
enable internal tacho
print
print total
stop
pause
LOADC LL
(s)
optional sense for 6 wire
connection
Address Select ADS
1
2
3
4
5
24V
0V
+
D
−
D
ADS
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
R
1k
2k2
4k7
10k
22k
47k
100k
4
5
6
7
8
9
10
1
2
3
B LT SP D TACHO
+
0
V
output
POW R SUPPLY
+24V
0
V
TXD
2
3
4
5
6
7
8
RXD
DSR
SG
DTR
CTS
RTS
MAD
DB9F
t
o C/ LC
1
2
3
4
5
6
A1
A
2
A
3
A
4
A
5
RTS
TXD
0V
0V
RXD
CTS
RJ12
Loadcell
Power/COM2
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
24V
0V
+
D
−
D
IN0
COM1
Keep all wiring separated
from mains wiring
Use shielded cable where
indicated
M 1 bus address set with
setting (Q2522).
MR1 bus address set with
ADS pin and must be same
as M 1.
Fit an MAT terminator to
each end of COM2 cable if
length exceeds 50m.

MC INDUSTRIAL GROUP LTD Connections
MW95A_IM_ALL_SV6.09f_en 15/61
Connection Diagram – MT1
B LT SP D TACHO
+
output
0
V
POW R SUPPLY
+24V
0
V
TOTALIS R
input
0V
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
H1
H2
H3
V1
V2
V3
K1
K2
K3
K4
K5
O1
O2
O3
O4
O5
O6
O7
O8
O9
U1
U2
M1
M2
M3
M4
Digital Inputs
Power/COM2
Digital Outputs
Pulse Output
Analog Outputs
COM3
Analog Input 2
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
24V
0V
24V
0V
+
D
−
D
ADS
OUT1
OUT2
OUT3
OUT4
{MT1}
OUT5
OUT6
OUT7
OUT8
0V
+mAO2
−
mAO2
+mAO1
−
mAO1
+/~ OUT0
−
/~ OUT0
+D
−
D
0V
+VI2
+mAI2
−
AI2
pulse output
running
run motor
healthy
weight fault
belt speed fault
material feed
alarm alert
MD1,MD2
MT1
MR1
L1
L
2
L
3
L
4
L
5
RTS
TXD
0V
0V
RXD
CTS
RJ12
Power/COM2
24V
0V
+
D
−
D
ADS
COM1
TXD
2
3
4
5
6
7
8
2
3
4
6
7
20
RXD
DSR
SG
DTR
CTS
RTS
RXD
TXD
CTS
DSR
SG
DTR
MAC
MAD
DB9F
t
o C/ LC
MAP
DB25M
t
o
rinter
to
C, LC
or
ModWeigh Display
MD1,MD2
optional belt angle input
platform weight
flowrate
no function
acquire zero
run
enable internal tacho
print
print total
stop
pause
LOADC LL
(s)
optional sense for 6 wire
connection
Address Select ADS
1
2
3
4
5
24V
0V
+
D
−
D
ADS
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
R
1k
2k2
4k7
10k
22k
47k
100k
4
5
6
7
8
9
10
1
2
3
1
2
3
4
5
6
Q1
Q2
Q3
Q4
Q5
Q6
T1
T2
T3
T4
T5
J1
J2
J
3
J
4
J
5
R1
R2
R3
R4
R5
R
6
S
1
S
2
S
3
S4
S5
S6
RTS
TXD
0V
0V
RXD
CTS
RJ1
2
Loadcell 1
Loadcell 2
Tacho (I/O)
Loadcell 4
Loadcell 3
Power/COM2
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
24V
0V
+
D
−
D
ADS
24V
0V
IN0
IN9
OUT9
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
COM1
acquire zero
run motor
Keep all wiring separated
from mains wiring.
Use shielded cable where
indicated.
For individual loadcell sensi-
tivity adjustment, use termi-
nals , Q, R and S.
Display and transmitter can
alternatively be connected
COM1 to COM1 using an MAC
cable.
MT1 bus address set with
ADS pin or a setting.
MR1 bus address set with
ADS pin and must be same
as MT1.
Fit an MAT terminator to
each end of COM2 cable if
length exceeds 50m.

MC INDUSTRIAL GROUP LTD Connections
MW95A_IM_ALL_SV6.09f_en 16/61
Connection Diagram – MT3
Loadcell Connections
The loadcell(s) may be wired directly to the loadcell terminals or connected together in the field with a
junction box and connected to the ModWeigh unit with a single cable.
When connected to the terminals only a 4-wire connection is used, and digital corner adjustments are
possible. (MT1 only)
When connected with one cable and a junction box no corner adjustments are possible. It is preferable
to use a 6-wire connection as this eliminates voltage drop errors in long cables caused by cable resis-
tance.
B LT SP D TACHO
+
output
0
V
POW R SUPPLY
+24V
0
V
TOTALIS R
input
0V
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
H1
H2
H3
V1
V2
V3
K1
K2
K3
K4
K5
O1
O2
O3
O4
O5
O6
O7
O8
O9
U1
U2
M1
M2
M3
M4
Digital Inputs
Power/COM2
Digital Outputs
Pulse Output
Analog Outputs
COM3
Analog Input 2
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
24V
0V
24V
0V
+
D
−
D
ADS
OUT1
OUT2
OUT3
OUT4
{MT1}
OUT5
OUT6
OUT7
OUT8
0V
+mAO2
−
mAO2
+mAO1
−
mAO1
+/~ OUT0
−
/~ OUT0
+D
−
D
0V
+VI2
+mAI2
−
AI2
pulse output
running
run motor
healthy
weight fault
belt speed fault
material feed
alarm alert
MD1,MD2
MR1
L1
L
2
L
3
L
4
L
5
RTS
TXD
0V
0V
RXD
CTS
RJ12
Power/COM2
24V
0V
+
D
−
D
ADS
COM1
TXD
2
3
4
5
6
7
8
2
3
4
6
7
20
RXD
DSR
SG
DTR
CTS
RTS
RXD
TXD
CTS
DSR
SG
DTR
MAC
MAD
DB9F
t
o C/ LC
MAP
DB25M
t
o
rinter
to
C, LC
or
ModWeigh Display
MD1,MD2
optional belt angle input
platform weight
flowrate
no function
acquire zero
run
enable internal tacho
print
print total
stop
pause
LOADC LL
(s)
optional sense for 6 wire
connection
Address Select ADS
1
2
3
4
5
24V
0V
+
D
−
D
ADS
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
R
1k
2k2
4k7
10k
22k
47k
100k
4
5
6
7
8
9
10
1
2
3
MT3
1
2
3
4
5
6
E
1
E
2
T1
T2
T3
T4
T5
J1
J2
J
3
J
4
J
5
RTS
TXD
0V
0V
RXD
CTS
RJ1
2
Loadcell 1
Analog Output
Tacho (I/O)
Power/COM2
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
+AO1
−
AO1
24V
0V
+
D
−
D
ADS
24V
0V
IN0
IN9
OUT9
COM1
acquire zero
run motor
flowrate
Keep all wiring separated
from mains wiring.
Use shielded cable where
indicated.
Display and transmitter can
alternatively be connected
COM1 to COM1 using an MAC
cable.
MT3 bus address set with
ADS pin or a setting.
MR1 bus address set with
ADS pin and must be same
as MT3.
Fit an MAT terminator to
each end of COM2 cable if
length exceeds 50m.

MC INDUSTRIAL GROUP LTD Connections
MW95A_IM_ALL_SV6.09f_en 17/61
Tacho Connections
A tacho is normally used to measure the belt speed. The output of the sensor is a frequency which is
proportional to the belt speed.
The tacho sensor may use either a 2 wire or 3 wire connection.
3 Wire N or ush ull Output 2 Wire Output
NAMUR Sensor AC Sensor
Internal Tacho
It is always recommended to use a tacho to measure the belt speed, however it is possible to set a
fixed belt speed into the controller using the setting ‘internal belt speed’. If this is used, it is essential
that the controller know when the belt is running or stopped to avoid large errors in the totalised
weight. A conveyor run signal must be connected to one of the digital inputs and its function pro-
grammed to be ‘enable internal tacho’ (input function 7).
T1
T2
T3
T4
T5
Tacho (I/O)
24V
0V
IN0
IN9
OUT9
B LT SP D TACHO
−
+
T1
T2
T3
T4
T5
Tacho (I/O)
24V
0V
IN0
IN9
OUT9
B LT SP D TACHO
~
~
AC
MT1
MT1,MT3
B LT SP D TACHO
+
output
0
V
A
1
A
2
A
3
A
4
A
5
Tacho (I/O)
24V
0V
+D
‒
D
IN0
A
1
A
2
A
3
A
4
A
5
24V
0V
+D
‒
D
IN0
B LT SP D TACHO
+
−
Tacho (I/O)
MP1,MP2
MP1,MP2
B LT SP D TACHO
+
output
0
V
T1
T2
T3
T4
T5
Tacho (I/O)
24V
0V
IN0
IN9
OUT9
T1
T2
T3
T4
T5
24V
0V
IN0
IN9
OUT9
B LT SP D TACHO
+
−
Tacho (I/O)
MT1,MT3
Q1
Q2
Q3
Q4
Q5
Q6
Loadcell 2
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
1
2
3
4
5
6
Loadcell 1
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
R
1
R
2
R
3
R
4
R
5
R
6
Loadcell 3
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
S
1
S
2
S
3
S
4
S
5
S
6
Loadcell 4
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
4
3
2
1
Loadcells Wired to
Directly to Terminals
Allows corner adjustment and individual
monitoring of loadcell outputs
MT1
1
2
3
4
5
6
Loadcell 1
+EX
−
EX/0V
+
SIG
−
SIG
+
SEN
−
SEN
LOADC LL
(s)
optional sense for 6 wire
connection
1
+E
1
−
E
+S
−
S
2
+E
1
−
E
+S
−
S
3
+E
1
−
E
+S
−
S
4
+E
1
−
E
+S
−
S
Loadcells Wired to Junction Box
For best accuracy use a 6-wire connec-
tion to controller
MT1,MT3

MC INDUSTRIAL GROUP LTD Setup
MW95A_IM_ALL_SV6.09f_en 18/61
Multidrop Systems
ModWeigh instruments can be connected using the COM2 RS485 bus. Up to 10 systems may be con-
nected on the bus. A ModWeigh display can select any one of the systems on the bus to work with.
A multidrop connection can also be used with any other Modbus master device such as a LC. If a non
ModWeigh master is used on the bus, then the ModWeigh instruments are unable to communicate with
one another. An external Modbus master can alternatively be connected to an RS232 COM1 port.
An MR1 unit cannot share the bus with a non ModWeigh master such as a LC. A LC could be con-
nected using the COM3 port on the MR1.
To connect in mutidrop use the RS485 connection COM2. The wiring should be made in a daisy-chain,
with one instrument connected to the next. If a stub connection is used to a main cable as shown in the
diagram, then make sure its length limit is adhered to.
Two MAT line terminators must be fitted, one at each end of the cable run.
The +D, -D and a 0V terminal must all be connected together through the data cable.
Setting the COM1 Modbus Address
Before a multidrop system will operate, the addresses in each of the ModWeigh units will need to be set
differently. This can be done by wiring a link or resistor to the ADS terminal where available. See the
table on the connection diagram. Alternatively the address setting can be changed in each unit using a
display connected to its COM1.
The following procedure is used to set a units address.
1. ress the Q key to access the setup menu.
2. Key in the quick key code 2512 to select the ‘COM1&2 modbus address’ step.
3. ress the EDIT key. (If editing is locked, key in the password 111 and press ENTER).
4. Enter the desired address (1, 2 or 3 etc.) and press ENTER.
5. ress and hold the BACK key to return to normal operation.
6. Repeat for each of the units which are to be used on the bus.
When the multidrop system is then connected and powered, the display should be able to see each of
the ModWeigh systems. This is done by pressing the SELECT key on the display.
S TTING UP
Setup
ModWeigh instruments must be calibrated for each specific application. The parameters stored are col-
lectively known as the Setup.
Description
ress the Q key to access the setup menu.
The setup is divided into sections as shown in the following diagram.
…
L
i
L
][
40 m
n
Li ≤ ][500 mL
≤
if D = MD1,MD2 Display, then n ≤ 10
if D = LC master, then n ≤ 32
0V +24V
CONVEYOR RUNNING
enable internal tacho [INx, 7]

MC INDUSTRIAL GROUP LTD Setup
MW95A_IM_ALL_SV6.09f_en 19/61
S TUP
Basic Settings
AI1 AO1
AI2 AO2
IN1 OUT1
IN2 OUT2
IN3 OUT3
IN4 OUT4
IN5 OUT5
IN6 OUT6
IN7 OUT7
IN8
Inputs Internal Signals Outputs
OUT8
COM1 Communications & Display
COM2
Information, Resets & Final Calibration
Setup Diagram
The Setup contains Settings and Macros which are described next.
Settings
Most of the setup for a system involves setting calibration constants which for example calibrate the
loadcell input, the 4-20mA outputs and the operation of relays etc. These settings are simple numeric
values.
Macros
Macros are used to store short programs which are used to construct text strings to output to the
printer, perform arithmetic calculations and other special control functions. Macros are a collection of
program segments which can call one another as subroutines. They have structured if/then/else state-
ments and program looping constructs.
A macro is a sequence of numbers (bytes with values of 0 to 255).
Menus
All the setup parameters are contained within a menu structure which follows the setup sections.
Basic Settings
Inputs
Internal Signals
Outputs
Communications & Display
Information, Resets & Final Calibration
Factory Settings
Basic Settings
The basic settings are settings which generally must be set first and often affect other settings through
the controller. For example, they set the engineering units and measuring range for the application.
Inputs
The inputs are settings and calibration which effect the basic inputs signals. For example the loadcell
input, tacho input (where used) and digital inputs.
Internal Signals
This section contains the main calculations for the instrument. Most signals are here, for example the
weight, zero weight, total weight etc. Much of the instruments configuration is done in this section.
Outputs
The output are settings and calibration which effect the basic output signals. For example the 4-20mA
outputs and digital outputs. These change the calibration range and select the signal to appear on the
digital outputs.
Communications & Display
This section sets the baud rates etc for the communications ports. It sets the key locks for the
MD1,MD2 Display. It also contains the Macros for the instrument.
These settings are not available in ‘B’ model instruments.
Information, Resets & Final Calibration
This section contains information about the unit, including its serial number, the product type etc.
These settings allow all the settings & macros to be reset back to their default values. The final calibra-
tion is also done here.
Factory Settings
The factory settings are used to calibrate the basic instrument in the factory. These are password pro-
tected and are not usually required once the instrument has left the factory.
Loadcell
Calibration
Macros

MC INDUSTRIAL GROUP LTD Setup
MW95A_IM_ALL_SV6.09f_en 20/61
Keypad
MD1,MP1 Keypad
MD2,MP2 Keypad
SOFT keys
The function of the 5 soft keys is indicated on the display.
ALARM key
Used to access the alarm list menu.
S L CT key
Used to select a system to display if more than one unit is connected on the network.
DISPLAY key
Allows the operator to select the display layout.
S TUP key
ress to view the setup menus.
ALPHANUM RIC keypad
Used to enter numerical data values.
UP and DOWN keys
Use these keys to move up and down a menu, or to increase or decrease a setting when editing is en-
abled.
L FT and RIGHT keys
Used to step thorugh macros and the selection of some other items.
NT R key
Use this key to move forwards through the menu, or to confirm a change to a setting.
BACK key
Use this key to move backwards through the menu, or to cancel a change to a setting. Hold the key to
exit completely out of the menus and back to normal operation.
Displaying the Setup Menus
ress the SETU key (Q) to display the setup menus.
Selecting a Menu Item
To the left of each menu item is a single digit. This is the Quick Key number. Simply key in this number
to select the corresponding menu item. Items which have a + to the left will then display a sub-menu in
the same format. Continue pressing Quick Keys to navigate to the desired setting. Refer to the Setup
Summary for the sequence of Quick Keys to go directly to each setting.
Alternatively, repeatedly press the ENTER key to step through all the menus, sub-menus and settings in
turn.
ALARM
S L CT
DISPLAY
S TUP
UP
L FT
RIGHT
DOWN
SOFT K YS
BACK
NT R
SOFT K YS
BACK
NT R
ALARM
S L CT
DISPLAY
S TUP
UP
L FT
RIGHT
DOWN