【摘要】 采用F 4 0M可编程序控制器对西门子交流三速变极调速起货机控制线路进行改造 ,进一步提高控制系统的功能和可靠性。还分析了西门子交流三速变极调速起货机控制系统的功能要求及硬件设计 ,同时还提供了PLC控制系统梯形图程序。更多还原

【Abstract】 The cargo winch of Siemens alternating three speed change pole speed adjusting is reformed with F 40M PLC,so that system function and reliability are improved.Requirement and hardware designing of Siemens alternating three speed change pole speed adjusting cargo winch control system are analyzed,the ladder diagram of control system is provided.更多还原