What is the function of PLC input ON/OFF on TeSys Giga contactor ?

Normally the contactor operation is controlled by AC or DC control voltage input to A1-A2terminals. But in advanced version contactor, the contactor can be controlled by additional 24V DC PLC inputs to X1-X2-X3 terminals.

When the PLC switch is ON, the contactor function is controlled by PLC input.
When the PLC switch is OFF, the contactor is controlled by control voltage input to A1-A2.




The electrical schematic and function description are available on the installation guide DOCA0189EN and here is the link:TeSys Giga Series - Contactors and Electronic Overload Relays - Installation Guide User guide | Schneider Electric

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