How to control AC contactor with plc output? For class. .

This is related to whether the output type of PLC is relay output or transistor output, and also to the coil voltage of AC contactor. If AC contactor is AC220V coil, relay output PLC should be used. Wiring is that the output end of PLC is connected to one end of 220V, the other end of 220V is connected to one end of AC contactor coil, and the other end of AC contactor coil is connected to the output point of PLC. If the AC contactor is a DV24V coil, it can be output through relay or transistor. The relay output is that the PLC output terminal is connected to one end of 24V (both positive and negative) and the other end of 24V (if the PLC output terminal is connected positively, the other end is negative; If the terminal of LC is negative, the other end is connected to one end of AC contactor coil, and the other end of AC contactor coil is connected to the output point of PLC. If the PLC is a transistor output, it depends on whether the output is high-level effective or low-level, and the connection method is similar. They just go around in circles to form a circle.

Hope to adopt. . . . . .