摘要
根据某市西郊污水处理厂的具体应用实例 ,介绍了电机远程变频调速的PLC(可编程控制器 )控制原理与系统构成 ,给出了PLC梯形图。
Based on the application of specific example of Tangshan Xijiao Sewage plant, this paper introduces remote speed control of motor system with PLC and Variable Frequency operation, and presented the ladder-shape picture and the system structures.
