Control Mode
 WARNING |
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UNINTENDED EQUIPMENT OPERATION
Size the command components according to the control circuit
characteristics.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
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Advanced Contactor
With PLC input switch in the position OFF
A1-A2 control module terminals are used to control the advanced contactor. The control modes and the control wiring are the same as a standard contactor (see Standard contactor for detail)
X1-X2-X3 control module terminals are not used and do not need to be wired.
Two-wire mode: maintained command
Three-wire mode: pulse command
With PLC input switch in the position ON
A1-A2 control module terminals are used to supply the electronics and the coil of the control module.
X1-X2-X3 control module terminals are used to close and open the contactor through 24 Vdc control orders.
The poles are closed as soon as the control voltage is supplied to A1-A2 control module terminals and the command on X1 and X3 terminals is ON.
The poles are open as soon as the command on X1 and X3 terminals is OFF or if the control voltage is removed from A1-A2 control module terminals.
Depending on the control circuit wiring diagram, the control mode can be two-wire mode or three-wire mode (see Standard contactor for detail).
Two-wire mode: maintained command
Three-wire mode: pulse command
Standard Contactor
Coil voltage supply and control signal are the same signal and use just one channel connected to A1-A2 control module terminals.
The poles are closed as soon as the control voltage is supplied to A1-A2 control module terminals.
The poles are open as soon as the control voltage is removed from A1-A2 control module terminals.
Depending on the control circuit wiring diagram, the control mode has two types:
-
Maintained type (two-wire mode)
- Pulse type (three-wire mode)
Two-wire mode: The command is maintained type. The poles close and stay closed as soon as the command is ON.
The poles open and stay opened as soon as the command is OFF.
Three-wire mode: The commands are pulse type. The use of one NO auxiliary contact and two command components are necessary.
The poles close as soon as there is a pulse command ON. The poles stay closed up to a pulse command OFF.