1/35基于三菱PLC的三层电梯控制系统设计基于PLC的三层电梯控制系统设计默认分类2008-09-0311:06:28阅读78评论0字号：大中小订阅目录摘要.......................................................1第1章电梯概述..................................................31.1引言........................................................31.2电梯的发展简史..............................................31.3电梯的基本结构..............................................31.4电梯的分类..................................................5第2章可编程控制器简介..........................................62.1PLC的结构及各部分的作用.....................................62.2PLC的工作原理...............................................72.3PLC的编程语言...............................................82.4PLC基本指令.................................................82.5梯形图设计规则..............................................11第3章三层电梯PLC控制系统设计...................................123.1电梯的控制要求..............................................123.2三层电梯主电路..............................................123.3输入输出点数分配............................................123.4PLC外围接线图...............................................133.5功能指令表概述..............................................143.6程序分析....................................................153.7三层电梯梯形图程序..........................................19结束语........................................................29参考文献.......................................................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述问题。本论文通过讨论电梯控制系统的组成，阐述可编程控制器
onelevator，bydiscussingtheconstructionofelevatorcontrolsystem.Italsoillustratesthegeneraldesignproject,thedesignprocessandconstructionofthePLCcontrolsystemforthree-storybuildings,listingthespecificmaincircuit,trapeziacontrolchartofelevatorandrepertoires.Italsoshowstheconstructionofframechartofthesystemandprocessflowchart.ThustheprogrammingmethodofPLCisbroughtforwardonthebasisofanalyzinganddealingwiththelogicrelationshipofrandomsigns.Italsodesignedacomplicatedelevatorcontrolsystem.Iftheprojectcanbeaccepted,itcansolvetheproblemswhichcanbebroughtbyrelay,suchastoomanycontactingpoints,highfaultrate,low...
