文献翻译-西门子S7-300 PLC在双电梯协调控制系统中的应用.docVIP

附录：外文翻译 Simens S7-300 PLC in double elevator coordinated control system application Abstract: This article take two five buildings elevators as the design object, uses the Siemens S7 - 300 series programmable controller (PLC), the union settles the AN Chuan VS-616G5 general frequency changer, developed a set of exchanges frequency conversion velocity modulation PLC double elevator coordinated control system, thus only needed PLC then to be able to carry on the control to two elevators movement operations. Key word: PLC ；Double elevator ； Hardware software 1 Introduction In recent years, along with the architecture industry vigorous development, the high-rise construction and the intellectualized construction unceasingly emerged, the people proposed to the elevator the more and more high request, the single elevator often could not satisfy in the building the transportation need, this time needed reasonably to install many elevators to alleviate the elevator movement the pressure, therefore the elevator group control system (elevator group control system) arose at the historic moment. At the same time, along with automated technology fast development, also enormously promoted the elevator control technology progress, the massive advanced controls technology applies to the elevator group control system, enables the elevator group control system the control characteristic to have the very big improvement. In view of present this present situation, the present paper take two five elevators as the design object, has conducted the more thorough analysis research to the elevator group control question, proposed some own understanding and the view, designed a set of PLC double elevator coordinated control system. Control systems hardware design This system is mainly the exchange frequency conversion velocity modulation system which by PLC, the frequency changer, the control box, the monitor, the electric motor is composed (Variable Voltage Variable Frequency, is called VVV