ModWeigh MW93A - Batch Weighing

EMC INDUSTRIAL GROUP LTD Connections
MW93A_IM_ALL_SV6.09f_en 12/59
• disable START key
• do not use start function
VSD drive, start/stop buttons
External START / STOP 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 / STOP buttons connected to ModWeigh instrument controlling motor contactor.
• disable START key
• do not use start function
Batch Weighing
External Buttons for Batching – Method 1
When START is pressed, the total is reset and the motor started. Pressing STOP 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.
motor contactor (mc)
0V
run motor [OUT3, 56]
+24V
START
batch start [INx, 29]
CONTINUE
start [INx, 27]
STOP
NOT stop [INx, -1]
+24V
0V
mc
START
run [IN3, 2]
STOP
motor contactor (mc)
overload
mc
motor contactor
run motor
[OUT3, 56]
+24V
0V
NOT stop [INx, -1]
overload
overload
+
−
AO1
+
−
VSD speed input
4-20mA
VSD run input
run motor [OUT3, 56]
+24V 0V
NOT stop [INx, -1]
VSD OK
start [INx, 27]
START
STOP
+
−
AO1
+
−
VSD speed input
4-20mA
run [IN3,2]
VSD running signal
+24V 0V