论文部分内容阅读
论述了在东风4 型机车电气系统控制中,采用可编程序控制器(PLC) 替代电器触头联锁方式的改进;以东风4B型机车为例给出了PLC的输入、输出原理图及梯形图的设计
The paper discusses the improvement of the electrical system control of Dongfeng 4 locomotive by adopting the programmable logic controller (PLC) instead of the electrical contact interlocking method. Taking the DF4B locomotive as an example, the input and output schematics of PLC and trapezoid Illustration design