利用PC控制的三相电动机起动电路

The Starting Circuit of Three-phase Electromotor Using PC to Control

介绍了一种利用可编程控制器控制的三相电动机降压起动电路 ,给出其设计的控制系统的梯形电路图及程序控制表 。

The paper introduces a starting circuit of three-phase electromotor using PC to control.The trapeziform diagram of system,the exterior wiring diagram of system and controlling programme table of PC are given.The paper expatiates the working principle at the same time.