交流异步电动机变频调速控制系统设计  

The Design of Variable-frequency Speed Control System of AC Asynchronous Motor

作　　者：周晓旭[1] 

机构地区：[1]山西机电职业技术学院,山西长治046000

出　　处：《安徽电子信息职业技术学院学报》2017年第1期6-10,共5页Journal of Anhui Vocational College of Electronics & Information Technology

摘　　要：随着变频技术的发展,变频调速已逐步成为交流异步电动机最为理想的调速方式之一。探讨用西门子S7-200PLC和MM420变频器对三相异步电动机进行变频调速控制的方法,分别采用I/O硬接线方式和用RS485通讯方式控制变频器的启停和频率,并对这两种控制方式进行比较。With the development of variable-frequency technology, the speed control with variable frequency has become one of the most ideal speed control modes of alternate current asynchronous motor.The method of variable-frequency speed control of three-phase asynchronous motor with SIEMENS S7-200 PLC and MM420 converters is studied.The start, stop and frequency of the frequency converter are controlled by I/O hard connection mode and RS485 communications mode, and the two control modes are compared.

关 键 词：PLC 变频器 调速控制 

分 类 号：TM344[电气工程—电机]