plc在智能建筑電梯控制系統(tǒng)中的應用中英文翻譯資料-建筑結(jié)構(gòu)-文庫吧資料
2025-05-22 18:29本頁面
【正文】 ble and fortable and how to save energy resources and protect environments and so on are the basic requirements to the elevator control system. PLC is a mon industry control is a special industry control puter which has the perfect function and simple frame. The PLC strong ability in interference and so on makes the elevator industry one after another to apply the PLC to the elevator control system, in order to replace the relay being used in traditional elevator control system. The Application of PLC in the elevator control system reduces the breakdown rate and efficiently improves the operating reliability of the elevator with safety. This paper mainly discusses the elevator control system’s working principles, the system’s software and hardware realization methods and so on. Ⅱ . The Working Principle of Elevator Control System In Fig. 1 the Hardware Structure Graph of Elevator Control System is presented. Fig. 1 The Hardware Structure Graph of Elevator Control System The Working Principles of Elevator Control System are stated as follows: The spot control information is send into the PLC from the customer input devices firstly, then the PLC control cabi is required to send out the control signal to drive the equipments according to the system demands. The elevator can then perform the homologous action according to the control request. There are velocity feedback devices in system, which adopt measure velocity generators to provide the elevator velocities and generally are installed in the tail of tow motors .So this is a feedback control system, which can improve the system’s control precision. Ⅲ . The Hardware Configuration of Control System It is not necessary to do interface circuit in the elevator’s PLC control we should do is to send the signals to PLC digital input signals include inside and outside calling signals ,floor location inspecting signals , limiting location signals ,opening and shutdown the elevator door signals etc. The DC power which is provided to PLC can be used as indicator light power. The PLC output points can be directly used to control transducers for the purpose of electrical motor’s positive turn and reverse ,stop and control each segment velocity and so on .ＯＭＲＯＮ pany’s Ｃ 200HE series PLC has been selected as major control configuration according to the input/output points and the length of user’s program. On the other hand we also cons
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