The difference between traditional circuit and PLC

The relay coil can work under partial positive and negative wiring. MT series PLC drives all positive and negative electrodes, and the negative electrode is connected to the Y-point circuit.

MR series PLC is the output of relay, which can be used as a common relay. The contact current is limited, generally not exceeding 5A. The advantages of PLC are flexible internal program conversion, random programming function, replacing large logic control electric control cabinets, and numerous soft relays replacing intermediate relays, time relays and counters. , and simple wiring, powerful, low failure rate. For the cycle, it is a negative cycle.