三相交流固态继电器在PLC控制中的应用

Application of the 3 phase solid state relays on the experiment about PLC

三相交流固态继电器是以单一输入端对三相负载进行直接开关切换,并可以用几毫安的微小信号来控制大功率负载的起动与关断。本文正是利用三相交流固态继电器的这个特点将其应用到PLC控制中来作为受控对象的开关器件。

The 3 phase solid state relays consist of three solid-state outputs controlled by one input. And it can use a low voltage signal to switch a high-power load. There for this paper just use the 3 phase solid state relays for the switch of the apparatus which is controlled by PLC on the experiment.