摘要在经济飞速发展的今天，电梯作为一种垂直交通工具,在运输乘客和货物上起着很大的作用,传统的继电器型电梯控制系统因其触点多,稳定性差,维修工作量大，故障频繁等逐渐被社会淘汰。PLC作为工业控制器得到广泛的应用,它的种种优点使得它成为电梯控制系统的主角。更加安全、方便、舒适是现代电梯追求的品质,基于PLC的电梯控制系统能很好的达到上面的要求,通过合理的设计,电梯的控制系统将会越来越先进。电梯的乘坐的舒适度同时也将大幅度提高。62126

   首先，介绍了电梯的大概框架，然后对阻力和升力控制原理与西门子PLC在电梯控制原则的阐述。设计出电梯控制系统总体运行方案,并选定西门子S7-1200PLC,并根据控制要求列出了具体的硬件电路及I/O分配表,绘制出了硬件接线图。在分析、处理随机信号逻辑关系的基础上,最后设计出系统运行流程图,结合软件,编制梯形图,调试后实现电梯稳定运行。

毕业论文关键词：可编程控制器 电梯控制 s7-1200

Abstract In today's rapid economic development, as a vertical lift transport, it plays a big role in the transport of passengers and cargo, the traditional relay-type elevator control system because of its many contacts, poor stability, the maintenance workload, failure and frequent social gradually be eliminated. PLC as industrial controllers are widely used, it makes it all the advantages of the protagonist of the elevator control system. More secure, convenient, comfortable and modern elevator is the quality of the pursuit, PLC elevator control system based on well achieve the above requirements, reasonable design, the elevator control system will be more advanced. An elevator ride comfort will also be greatly improved.

   Firstly, the rough frame of the elevator, and then drag and lift control principle with Siemens PLC control principles set out in the elevator. Elevator control system design the overall operation of the program, and selected Siemens S7-1200PLC, and lists the specific hardware circuits and I / O allocation table according to the control requirements, to map out the hardware wiring diagram. Based on analysis, random signal processing logic on the final design of the system operation flowchart, a combination of software, the preparation of the ladder, after commissioning to achieve stable operation of the lift.

Keywords: PLC elevator control s7-1200

目录   

第1章绪论 . 6

  1.1电梯的国内外发展状况 6

  1.2课题的研究背景及意义 6

  1.3 PLC在电梯控制中的应用以及发展前景 8

  1.4课题研究的内容 10 

第2章电梯运行总体设计 .11  

  2.1 PLC控制系统方案设计 11  

  2.1.1电梯控制系统结构设计  11 

  2.1.2电梯信号控制系统设计  12

  2.1.3电梯控制系统实现的功能  12

  2.2电梯曳引方案及门电机电路图 .13  

  2.3可编程控制器(PLC)的选择 13   

  2.3.1可编程控制器(PLC)的特点 . 13 

  2.3.2 PLC的选型  14 

第3章电梯软件设计 20 . 

  3.1 PLC的编程语言 .21 

  3.2系统运行流程图 .23

  3.3梯形图 .30   

  3.3.1外指令信号登记及消除  31 

  3.3.2内指令信号登记及消除  31 

  3.3.3电梯的平层信号处理  33

  3.3.4选层定向及反向截梯  33 

  3.3.5各楼层停车信号  40 

  3.3.6自动开关门  41 

第4章结论与展望  44