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摘要随着城市建设的不断发展，高层建筑不断增多。电梯作为高层建筑中垂直运行的交通工具已与人们的日常生活密不可分。传统的电梯控制系统采用的是继电器逻辑控制电路，这种控制易出故障，维护不便，运行寿命短，占地空间大，正逐步被淘汰。为了提高自动控制系统的可靠性和设备的工作效率，设计了一套以PLC为核心控制器的电梯自动控制系统，用来取代以往的较复杂的继电器—接触器控制。系统的核心部分（控制部分）使用了日本三菱公司生产的FX2N-80MR型PLC，因为在核心控制部分采用的是软件程序控制，从而在保证电梯正常运行这个要求的情况下，大大的提高了电梯故障检查与维修的方便性和容易性，同时还克服了手动操作所带来的一些人为干扰因素，取得了良好的经济效益和社会效益。关键词：PLC；电梯；逻辑控制；程序设计IIAbstractAlongwiththeurbanconstructiondevelopmentunceasing,thehighrisebuildingincreasesunceasinglytoo.Elevatorasaverticaltransportoperationinthehighrisebuilding,itwascloselyrelatedtothepeople'sdailylife.Thetraditionalelevatorcontrolsystemuseslogicoftherelaytocontrolcircuit,thiskindofcontrolseasilytobecrash,maintainsinconveniently,themovementlifeisshort,andthatoccupyingalargeareaofspace,itbeingeliminatedgradually.Forraisingthecredibilityoftheautomaticcontrolsystemandtheworkefficiencyoftheequipments,designasetoftakePLCasthecorecontrolleroftheelevatorautocontrolsystem,usingtoreplaceformermorecomplicatedofafterelectricappliances-thecontactmachinecontrol.Thecorepart(controlpart)ofthesystemusedaJapaneseMitsubishicompanytoproduceoftheFX2N-80MRtypePLCisthesoftwareprocedurecontrolinthecorebecauseofwhattocontrolthepartadoption,thusBepromisingtheelevatorcirculatesnormallyunderthecircumstanceof[with]thisrequest,raisedelevatortobreakdowncheckandtheconvenienceandeasyformaintainconsumedly,stillovercametomoveanoperationsomeartificialinterferencefactorsbringinthemeantime,obtainthegoodeconomicperformanceandsocialperformance.Keywords:PLC;elevator;logiccontrol;programdesign目录前言...........................................................................................................................11电梯的概述.........................................................................................................21.1电梯的发展简史..............................................................................................21.2电梯的运行工作情况......................................................................................21.3电梯控制系统的组成......................................................................................42三菱FX2N系列可编程序控制器介绍............................................................52.1可编程控制器的基础认识..............................................................................52.2可编程序控制器的工作方式及编程语言......................................................72.2.1PLC的工作方式...........................................................................................72.2.2PLC的编程语言...........................................................................................82.3可编程序控制器与继电器、微机在电梯控制中的应用比较......................83交流双速电梯的电气设计...............................................................................103.1交流双速电梯的基本工作原理....................................................................103.1.1交流双速电梯的主电路.............................................................................103.1.2电梯的主要电气设备.................................................................................113.2输入输出设计................................................................................................134PLC梯形图设计...............................................................................................154.1程序说明........................................................................................................154.1.1算法说明.....................................................................................................154.1.2程序中相关存储单元及中间继电器的说明.............................................154.2主程序设计....................................................................................................174.2.1上下行指示灯输出环节.............................................................................174.2.2反向楼层号预处理环节.............................................................................174.2.3楼层信号写入环节.....................................................................................174.2.4呼叫信号写入环节.....................................................................................204.2.5定向和等待信号设定环节.........................................................................204.2.6上行启动加速环节.....................................................................................204.2.7下行启动加速环节.....................................................................................204.2.8停止信号产生环节.....................................................................................234.2.9轿箱减速过程环节.....................................................................................234.2.10门控环节...................................................................................................254.2.11上行或等待状态反向信号处理环节.......................................................254.2.12下行或等待状态反向信号处理环节.......................................................254.2.13上行同向信号处理环节...........................................................................294.2.14下行同向信号处理环节...........................................................................304.2.15内部呼叫信号处理环节...........................................................................314.2.16子程序调用环节........