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四层电梯的PLC控制系统的设计
山东工商学院信电学院电气093 时林 09055318
摘要:电梯是高层建筑不可缺少的运输工具,用于垂直运送乘客和货物,传统的电梯控制系统主要采用继电器--接触器进行控制,其缺点是触点多,故障率高、可靠性差、维修工作量大等,而采用 PLC组成的控制系统可以很好地解决上的问题。本论文通过讨论电梯控制系统的组成,阐述可编程控制器(PLC)在电梯控制中的应用,提出了三层电梯的PLC控制系统总体设计方案, 并给出了系统组成框图和程序流程图,在分析、处理随机信号逻辑关系的基础上,提出了PLC的编程方法。采用本方案实现电梯控制,能够解决继电器——接触器触点多,故障率高、可靠性差、安装调试周期长、维修工作量大、接线复杂等缺点。使电梯运行更加安全、方便。
关键词:电梯、PLC、梯形图
Abstract:Elevator, the necessary transportation tool for tall buildings, is used for transferring passengers modities vertically. Most traditional elevator control system adopts relay--- contacting machine as its central director. But this system has so many disadvantages such as too many contacting points, high fault rate, heavy repairing work and so on. So if it was replaced by the control system equipped with PLC, the problems will be solved much more easily.
This essay explains the application of PLC on elevator,by discussing the construction of elevator control system. It also illustrates the general design project, the design process and construction of the PLC control system for three-story buildings, listing the specific main circuit, trapezium control chart of elevator and repertoires. It also shows the construction of frame chart of the system and process flow chart. Thus the programming method of PLC is brought forward on the basis of analyzing and dealing with the logic relationship of random signs. It also desig
山东工商学院信电学院电气093 时林 09055318
摘要:电梯是高层建筑不可缺少的运输工具,用于垂直运送乘客和货物,传统的电梯控制系统主要采用继电器--接触器进行控制,其缺点是触点多,故障率高、可靠性差、维修工作量大等,而采用 PLC组成的控制系统可以很好地解决上的问题。本论文通过讨论电梯控制系统的组成,阐述可编程控制器(PLC)在电梯控制中的应用,提出了三层电梯的PLC控制系统总体设计方案, 并给出了系统组成框图和程序流程图,在分析、处理随机信号逻辑关系的基础上,提出了PLC的编程方法。采用本方案实现电梯控制,能够解决继电器——接触器触点多,故障率高、可靠性差、安装调试周期长、维修工作量大、接线复杂等缺点。使电梯运行更加安全、方便。
关键词:电梯、PLC、梯形图
Abstract:Elevator, the necessary transportation tool for tall buildings, is used for transferring passengers modities vertically. Most traditional elevator control system adopts relay--- contacting machine as its central director. But this system has so many disadvantages such as too many contacting points, high fault rate, heavy repairing work and so on. So if it was replaced by the control system equipped with PLC, the problems will be solved much more easily.
This essay explains the application of PLC on elevator,by discussing the construction of elevator control system. It also illustrates the general design project, the design process and construction of the PLC control system for three-story buildings, listing the specific main circuit, trapezium control chart of elevator and repertoires. It also shows the construction of frame chart of the system and process flow chart. Thus the programming method of PLC is brought forward on the basis of analyzing and dealing with the logic relationship of random signs. It also desig
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