乘客电梯的PLC控制

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乘客电梯的PLC控制
摘要：国民经济的飞速发展, 现代化程度日益提高,高层建筑愈来愈多, 电梯也随之增多, 电梯产品在人们物质文化生活中的地位得到了提高,成为重要的运输设备之一。国内传统的电梯控制一是由继电器、接触器构成。它不仅存在着可靠性差、成本高、故障率高等缺点,而且在层数增加时,配线变化给制造及安装带来诸多不变。若用PLC 控制就解决了以上的不足。
 本设计就以PLC作为工具对升降电梯的各种操作进行控制。先对四层电梯的硬件部分作分析，看需要什么样的开关，电机，信号灯等。然后，画出它的控制面板图，再根据控制面板图估计一下I/O点数，这样可以确定所选机型，然后在软件设计，写出流程图，梯形图，写出语句。最后是进行调试，看看此程序是否可行。
 
关键词：PLC控制系统 电梯  继电器  接触器
 
 
 
 
PLC control of passenger Elevator
Abstract: The rapid development of the national economy, the increasing degree of modernization, more and more high-rise buildings, elevators also will be increased, Elevator products in people's material and cultural life of the status has been enhanced to become one of the important transport equipment. Traditional domestic elevator control from the first relay, a contactor. It is not only poor in the reliability, high cost, high failure rate shortcomings, but also in layers increases, changes to the wiring and installation of manufacturing has brought many unchanged. If the control by PLC to address the above shortcomings.
  the design of the PLC as a tool to the elevators for various operating control. Elevator on the first four parts of the hardware analysis, the need to see what kind of switches, motors, lights, etc.. Then, the control panel draw maps, plans, under the control panel is estimated to I / O points, so certain selected models, and then softwaredesign, write flowchart, ladder diagram, write statements. Finally,debugging and look at the feasibility of this procedure.
 
 
Key words: PLC control system Elevator relay contactor

目录
 第一章 引言………………………………………………………………………………1
 
 第二章 概  ………………………………………………………………………………2
 
 2.1电梯硬件的分析  …………………………………………………………………2
 2.1.1 电梯的组成  ……………………………………………………………………2
 2.1.2电梯的工作原理 …………………………………………………………………3
 2.2可编程控制器的介绍 ………………………………………………………………3
 2..2.1可编程控制器的发展 ……………………………………………………………5
 2.2.2可编程控制器（PLC）的用途……………………………………………………4
 2.2.3 可编程控制器（PLC）的特点……………………………………………………5
 2.2.3.1 PLC的性能特点  ………………………………………………………………5
 2.2.4  PLC的工作原理  ………………………………………………………………6
 2.2.5  PLC的编程语言  ………………………………………………………………7
 第三章 课题的任务分析 …………………………………………………………………9
 
 3.1 电梯控制的分析  …………………………………………………………………9
 3.2 整体设计流程的确定………………………………………………………………9
 第四章  可编程控制器的机型选择 ……………………………………………………10
 
 4.1可编程控制器控制系统的I/O点数估算  ………………………………………10
 4.2内存的估计…………………………………………………………………………10
 4.3响应时间的分析  …………………………………………………………………11
 4.4输入输出模块的选择  ……………………………………………………………11
 4.5机型的确定…………………………………………………………………………11
 第五章  硬件设计   ……………………………………………………………………12
 
 5.1硬件配置简介 ……………………………………………………………………12
 5.2电梯控制系统的硬件面板图 ……………………………………………………15
 5.3输入/输出的分配…………………………………………………………………16
 第六章  软件设计………………………………………………………………………17
 
 6.1程序流程图 ………………………………………………………………………17
 6.2程序语句 …………………………………………………………………………17
 第七章  程序调试、运行  ……………………………………………………………41
 
 7.1正常情况下程序调试 ……………………………………………………………41
 7.2过程分析   ………………………………………………………………………41
 第八章  总结    ………………………………………………………………………47
 
 致谢  ……………………………………………………………………………………48
 
  参考文献 …………………………………………………………………………………49

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