基于PLC的三相绕线式异步电机启动控制

Starting Control of Three-phase Wound-rotor Asynchronous Motor Based on PLC

介绍三相绕线式异步电动机转子串电阻启动继电接触器控制电路。以三菱FX2N系列PLC为控制器件,根据绕线式异步电动机转子串电阻启动控制的要求,改造继电接触器控制电路,设计了PLC输入输出接线图和梯形图程序,编写了控制程序语句指令表,分析了启动控制工作过程。

Three-phase wound-rotor asynchronous motor and relay contactor control circuit of rotor-resistance starting are both introduced. FX2N series of Mitsubishi PLC is selected, according to the rotor-resistance starting control request of wound-rotor asynchronous motor ,relay contactor control circuit is reconstructed, Input and output wiring and ladder diagrams of PLC are designed ,sentence repertoire of control procedure is compiled, the work procedure of starting control is analyzed as well.