摘要可编程控制器(PLC)是一种工业控制微型计算机,它很好地解决了在传统电梯控制系统中,容易出现故障,维护保养不方便,运行寿命不长,占用空间较大等问题。可编程控制器它使用了简单易学、直观易懂的梯形图语言来进行编程,更加容易上手,可以让大部分的操作者迅速的掌握编程和调试的方法,这也是为什么在现代的电梯控制技术中,大部分的操作员都会使用可编程控制器的原因之一。本文首先介绍了电梯控制技术的发展状况,电梯的分类方式以及结构组成部分,紧接着介绍了PLC的相关知识以及工作原理,还对PLC硬件进行了选型,对I/0点数进行分配与估计制定了分配表、最后设计程序绘制了梯形图,并用GX Works2软件对程序进行仿真。在PLC控制系统中,为了使程序更好地与升降机的运行相结合,把该程序分成了自动开关门程序,层级的显示程序,平层开门程序,呼叫程序,指示灯显示程序,分层的上下行程序,每一个程序都具有相应的功能,以实现对电梯运行的控制。关键词:电梯;梯形图;可编程控制器论文类型:工程设计AbstractProgrammable controller (PLC)is a kind of industrial control microcomputer,it is agood solution in the traditional elevator control system,prone to failure,maintenance is notconvenient,running life is not long,occupy a large space and other problems.Programmablecontroller It uses a simple and easy to learn,intuitive ladder diagram language to program,more easy to get started,can let most of the operator quickly master programming anddebugging methods,which is why in modern elevator control technology,most operators willuse one of the reasons for the programmable controller.This paper first introduces the development of elevator control technology,elevatorclassification and structural components,followed by the introduction of PLC relatedknowledge and working principle,but also the selection of PLC hardware,I/O points forallocation and estimation of the distribution table,the final design program to draw the ladderdiagram,GX Works2 software was used to simulate the program.In the PLC control system,in order to make the program better combined with the operation of the elevator,the programis divided into automatic opening and closing procedures,level of display procedures,level ofopening procedures,call procedures,indicator light display procedures,hierarchicalprocedures,each procedure has the corresponding function,to realize the control of theelevator operation.Key words:elevator;Ladder diagram;Programmable controllerThesis type:Engineering Design目录摘要…Abstract….Ⅱ目录,Π1绪论.1.1研究背景11.2研究目的与意义11.3国内外研究现状21.3.1国外研究现状21.3.2国内研究现状.21.4本文创新点…32电梯概述.42.1电梯的定义……42.2电梯的结构42.2.1电梯的组成42.2.2电梯的安全措施及保护装置.53硬件的选择…..63.1可编程控制器简介..63.2可编程控制器的特点63.3PLC的工作原理.73.4PLC选择.73.5变频器的选择…83.5.1变频器的分类..83.5.2变频器的选型.83.6主电路的设计.93.7控制电路的设计….103.7.1门锁安全回路103.7.2电磁抱闸电路.103.7.3接线图.104PLC控制系统的设计..124.1划分系统功能模块.124.2程序设计流程..134.3输入/输出(I/O)分配..14
暂无评论内容