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变频器启动
PLC控制牵引机变频器启动、停止的实现
PLC控制牵引机变频器启动、停止的实现
本文首先分析牵引机的功能及动作循环过程，采用PLC和伺服电动机作为控制方案；然后做出部件的电气原理图，分析需要控制的部件，根据需要控制的部件具体分析控制的相关部位，并确定出控制所需的输入、输出点数，由输入、输出点数选择PLC的型号，分配输入、输出通道；接着设计系统的控制方式，由系统的控制方案设计出控制流程图，最后，完成程序设计的硬件连接和程序设计。
变频器和软启动器的区别
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