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EMC INDUSTRIAL GROUP LTD 

Connections 

MW61A_IM_ALL_SV6.09d_en 

 

12/47 

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. 

BELT SPEED TACHO 

output 

0V 

POWER SUPPLY 

+24V 
0V 

TOTALISER 

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 

limit 1 output 
limit 2 output 
motion 
healthy 
net mode 
at zero 
weight fault 
alarm alert 

MD1,MD2 

MR1 

L1 
L2 
L3 
L4 
L5 

RTS 
TXD 
0V 

0V 
RXD 
CTS 

RJ12 

Power/COM2  

24V 

0V 

+D 

−D 

ADS 

COM1 

TXD 











20 

RXD 
DSR 
SG 
DTR 
CTS 
RTS 

RXD 
TXD 
CTS 
DSR 
SG 
DTR 

MAC 

MAD 

DB9F 

to PC/PLC 

MAP 

DB25M 

to Printer 

to 

PC, PLC 

or 

ModWeigh Display 

MD1,MD2 

 

gross weight 
 
weight 

acquire zero 

acquire tare 

print 

capture weight 

print total 

reset total 

totalise 

hold flowrate 

LOADCELL(s) 

optional sense for 6 wire 
connection 

 

 

 

Address Select      ADS 





24V 

0V 

+D 

−D 

ADS 













R

 

1k 

2k2 
4k7 
10k 
22k 
47k 

100k 







10 

MT3 

P1 
P2 
P3 
P4 
P5 
P6 

E1 
E2 

T1 
T2 
T3 
T4 
T5 

J1 
J2 
J3 
J4 
J5 

RTS 
TXD 
0V 

0V 
RXD 
CTS 

RJ12 

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 

limit 2 output 

weight 

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. 

Содержание ModWeeihg MW61A

Страница 1: ...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 outpu...

Страница 2: ...ice Document Details g0 g1 g2 g3 g4 g5 g6 g7 g8 g9 g10 g11 g12 g13 g14 g15 MT1 MT3 MD1 MD2 MP1 MP2 PRODUCT DESCRIPTION DOCUMENTATION MW61 Weigher Instrument Technical Information Instruction Manual MW...

Страница 3: ...GUIDE 22 Settings 22 Quick Keys 22 Quick Keys Reference 22 Initial Setup 23 Engineering Units 23 Measuring Range 23 Display Resolution 23 Calibration 23 Calibrate Loadcell 23 SETUP MW61A WEIGHER 24 Ba...

Страница 4: ...A_IM_ALL_SV6 09d_en 4 47 Information Resets 40 Product Information 40 Reset settings 40 Other display settings 40 I O Function Table 40 Modbus Access 43 OPERATION 43 Display 43 Keys 44 Operator Menu 4...

Страница 5: ...the weight reading to be set to zero The SET TARE key allows a man ual tare weight to be entered Signal Filtering Filtering for the weight can be adjusted to get the optimum compromise between reduct...

Страница 6: ...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 all...

Страница 7: ...n independently galvanically isolated to 50Vac High voltage 8 V Low voltage 4 V Maximum voltage 32 V Input load 4 k approximate Digital Inputs INx High voltage 8 V Low voltage 4 V Maximum voltage 32 V...

Страница 8: ...is recommended Some additional optional connections are as follows High and low limit outputs The 4 20mA weight output Dimensions Following are the dimensions of the hardware items that make up the sy...

Страница 9: ...C6 C7 C8 C9 Digital I O OUT1 OUT2 OUT3 OUT4 MT1 IN1 IN2 IN3 IN4 24V C10 0V TOTALISER input 0V gross weight POWER SUPPLY 24V 0V A1 A2 limit 2 output acquire zero MO3 OPTION 24V TOTALISER input 0V I1 I...

Страница 10: ...rinter to PC PLC or ModWeigh Display MD1 MD2 gross weight weight acquire zero acquire tare print capture weight print total reset total totalise hold flowrate LOADCELL s optional sense for 6 wire conn...

Страница 11: ...t weight acquire zero acquire tare print capture weight print total reset total totalise hold flowrate LOADCELL s optional sense for 6 wire connection Address Select ADS 1 2 3 4 5 24V 0V D D ADS 1 2 3...

Страница 12: ...0V VI2 mAI2 AI2 limit 1 output limit 2 output motion healthy net mode at zero weight fault alarm alert MD1 MD2 MR1 L1 L2 L3 L4 L5 RTS TXD 0V 0V RXD CTS RJ12 Power COM2 24V 0V D D ADS COM1 TXD 2 3 4 5...

Страница 13: ...y 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 fi...

Страница 14: ...rs stored are col lectively known as the Setup Description Press the Q key to access the setup menu The setup is divided into sections as shown in the following diagram SETUP Basic Settings AI1 AO1 AI...

Страница 15: ...ection 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 ins...

Страница 16: ...all the menus sub menus and settings in turn You can use the UP and DOWN keys to highlight a menu or sub menu item then press the ENTER key to continue from there When viewing a setting the UP and DO...

Страница 17: ...ation about the settings and indicates active keys or the preferred method of making a value change while editing Icon Description The setting is locked Password must be entered to edit The setting ca...

Страница 18: ...189 ALT1 arg1 arg0 UC arg0 1 arg1 1 128 16384 190 ALT2 arg1 arg0 UC arg0 1 arg1 1 128 32768 191 ALT3 arg1 arg0 UC arg0 1 arg1 1 128 49152 Register Instructions 192 NOP no operation 193 RECALL registe...

Страница 19: ...ion Instructions Calculations are done on a stack in RPN reverse polish notation When a value is entered onto the stack with a RECALL or VALUE instruction the other values on the stack are moved up fi...

Страница 20: ...acked value is used with an operator followed by with_stack DRIVE_BIT sets the bit to the value evaluated by the condition e g IF IN1 AND IN2 STACK IN3 AND IN4 OR with_stack DRIVE_BIT user bit 1 event...

Страница 21: ...is either as ASCII code value or an in struction code value 7 Displays the ASCII character or instruction description for the code value displayed 8 Modbus address of the macro Not editable 9 Soft ke...

Страница 22: ...rate the system you must access and adjust various settings in the unit The settings are ac cessed using their Quick Key numbers Quick Keys To Access A Setting 1 Press the Q key to access the setup me...

Страница 23: ...ed units The units can be changed if required Step Quick Keys p24 Select weight units 2112 Measuring Range Set the measuring range to the largest value that will occur during normal operation Most set...

Страница 24: ...capacity setting it will display as over range Therefore the range settings should be set larger than the maximum value that will occur during normal operation The measuring range affects the way many...

Страница 25: ...the year when daylight saving will end Q21925 daylight saving time DST 9920 0 Shows if daylight saving is on or off If automatic daylight saving correction is off then this setting may be used to mov...

Страница 26: ...play shows Calibrating please wait 6 Press ENTER twice to move to the AI1 span step Or press the DOWN key 7 Apply the known test weight 8 Press EDIT and enter the value of the test weight followed by...

Страница 27: ...ress the 0 key followed by ENTER to initiate a zero calibration 6 Press and hold the BACK key to return to normal operation Loadcell signals These settings are used for diagnostics and fault detection...

Страница 28: ...ons are disabled Internal Signals Basic Settings Inputs Internal Signals Outputs Communications Display Information Resets Final Calibration Weight Basic weight Q23111 gross weight 8740 kg t g Display...

Страница 29: ...stems with a small weight change signal the flowrate may be more stable when this setting is higher but it will take longer to reach a steady flowrate reading Totaliser Q2344 total weight 8730 g6 0 00...

Страница 30: ...ge of a capture weight input signal the weight is captured and recorded here Q2369 fault options 8454 Allows selected faults to not raise an alarm Memory Storage Memory storage is used to save or reca...

Страница 31: ...0 Q23922 temp 2 8614 g13 0 Q23923 temp 3 8576 g13 0 Q23924 temp 4 8578 g13 0 Q23925 temp 5 8582 g13 0 Q23928 date 8830 g13 Displays the date in the form YYMMDD Q23929 time 8832 g13 Displays the time i...

Страница 32: ...is useful to test the analog output The output will return to normal after you exit from the settings Q2427 AO2 signal can override output signal 8806 WU Displays the signal currently being output If...

Страница 33: ...10144 g12 0 Interface registers These registers are the recommended registers to use for extracting the basic signals from the trans mitter via Modbus The advantage of using these registers is that mu...

Страница 34: ...macros are the same as the preset options e g If set to 10 the default Key Macro is the same as when the option is set to 0 Similarly 11 to 1 12 to 2 etc Macros Q25531 print macro 1000 g13 This macro...

Страница 35: ...e a group of specifications The days of the week are identified using the following letters M TU WE TH F SA SU Upper or lower case letters may be used Q25554 print at times macro 1500 g13 This macro r...

Страница 36: ...menu 33 lock 8654 g417 0 Q25634 operator menu 34 lock 8656 g417 0 Q25635 operator menu 35 lock 8658 g417 0 Q25636 operator menu 36 lock 8660 g417 0 Q25637 operator menu 37 lock 8662 g417 0 Q25638 oper...

Страница 37: ...0 The above three settings allow up to three additional settings to be added to the operator menu These items will appear in the menu shown when the MENU key is pressed during normal operation Q25659...

Страница 38: ...d to be loaded Q2583 load setup 8942 Use the UP and DOWN keys to select what data to load from the selected file Q2584 save user log 8944 Q2585 save system logs 8946 Display settings The following set...

Страница 39: ...week The clock will run continue to run for a few days or weeks without power The time is also shown in the top right corner of the display if no alarms are present Q92191 clock enable 9910 0 Set to...

Страница 40: ...display Q92612 product serial number 8852 Q92613 software version number 8854 Q92614 CPU type 8858 Reset settings Q92633 reset other settings 1 reset to defaults 8954 0 Set to 1 to reset all user sett...

Страница 41: ...ntrol4 and IOx2 can all be read over modbus The registers control2 control3 control1C and control1G can be written to over modbus Bits marked can also be set by writing their bit number to the IO Cont...

Страница 42: ...x 7 152 OUT1aux 8 153 OUT2aux 9 154 OUT3aux 10 155 OUT4aux 11 156 OUT5aux 12 157 OUT6aux 13 158 OUT7aux 14 159 output function OUT8aux 15 IOxAux IOx This register hold the state of inputs IN1 to IN8 a...

Страница 43: ...6499 Integer 16 bit limited by integer range 8000 to 8999 7000 Address 8000 7000 to 7999 Long integers 32 bit words 8000 to 8999 Address 8000 to 8999 Float IEEE 4 byte reals The interface registers s...

Страница 44: ...band Engineering unit main display is calibrated in Secondary display shows one of a selection of values Press the key to scroll through the list Shows functions of soft keys A to E Keys operator men...

Страница 45: ...oft keys used with settings Icon Description Press key for menu of special functions Press EDIT key to edit the setting 8 Gives information about the settings and indicates active keys or the preferre...

Страница 46: ...the TARE WEIGHT setting Use the keypad to set the tare weight set setpoint Press this key to display the SETPOINT 1 high limit setting Use the keypad to set the setpoint Alarm menu An alarm is indicat...

Страница 47: ...ited signal 3mV V 184 span limited signal too low to span 185 186 motion error operation failed because of motion 187 188 189 190 191 192 193 194 195 power supply brown out check power supply 196 erro...

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