摘要
本文介绍了应用PLC改进三相异步电动机正、反转控制的一种电路,阐述了电路和梯形图的设计方法,分析了容易出现的问题和改进措施。
The paper presents to apply PLC to improve a circuit of foreword and reverse control of three-phase as synchronous motor.It expounds the design methods of the circuit and the ladder diagram, and analyzes problems which appear easily and improvement measures.
关键词
PLC
电动机
正、反转控制
梯形图
PLC
motor
foreword and inversed grafting control
ladder diagram
