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Plc emergency problem

The power of 30KW motor is too high to be directly connected to the air switch. If you must connect the air switch, you must control the running time of the water pump, otherwise there will be problems.

PLC is generally not so easy to break down, and the average trouble-free running time of PLC is 30000 hours. The possible reasons for the lack of PLC input and output are: PLC stop, PLC power supply, PLC input and output power supply, whether the male terminal wiring is loose, etc.

I suggest that if there is an emergency, you can connect a relay circuit to run, and finally check if there is any problem with the PLC.