关于PLC实现电动机Y-Δ起动的探讨

Realization Electric motor Y-△staiting Based on PLC

现在一些大功率电机采用的Y-Δ控制电路大多数是传统的继电器电路,这种电路在消除继电器断线不能正常启动、启动时形成的弧光短路等故障时有一定的困难,将PLC应用到以上控制电路中,将使继电器在继电器控制电路中存在的问题迎刃而解,并且用PLC控制多台电机启动时更能显示其优越性。主要探讨PLC在电机Y-Δ启动控制的应用。

Now some high efficiency electrical machinery use the Y- △ controlcircuit majority is the traditional relay electric circuit, this kind of electric circuit cannot normally start,the start when the elimination relay broken line forms the arc light short-circuits and so on when the break down has the certain difficulty,will apply PLC above in the control circuit to cause the relay the question which will exist in the black-white control electric circuit to be easily solved,When controls with PLC very many electric motors starts candemonstrate its superiority.This paper discusses PLC in the electrical machinery Y-△ startcontrol application.