单台电梯PLC控制系统的总体设计_自动化专业论文
发布时间：2015-01-22
来源：人大经济论坛
自动化专业论文范文
目 录
第1章 绪 论1
1.1 电梯的概述1
1.1.1 电梯的发展简史1
1.1.2 电梯的分类1
1.1.3 电梯的主要组成部分2
1.1.4 电梯变频调速控制的特点3
1.2 电梯控制系统的组成4
第2章 总体方案论证5
2.1 PLC五层电梯模型5
2.2 可编程序控制器的工作方式及编程语言6
2.3 PLC单台电梯控制系统功能介绍8
2.4可编程序控制器与继电器、微机在电梯控制中的应用比较9
2.5 电梯控制系统实现的功能10
第3章 硬件系统的设计11
3.1 曳引机构及传感器的选择11
3.1.1 曳引机构的选择11
3.1.2 超载传感器的选择11
3.2可编程控制器的认识12
3.3 变频器的选择及参数设定14
3.3.1变频器的选择14
3.3.2 616G5型变频器的标准规格15
3.3.3 变频器的参数设置16
3.3.4变频器自学习功能的应用方法17
3.3.5变频器容量计算17
3.3.6变频器制动电阻参数的计算17
3.3.7速度给定曲线18
3.3.8减速及平层控制18
3.4具体硬件电路的设计19
3.4.1内指令外召唤按钮电路19
3.4.2安全保护电路19
3.4.3编码器19
3.4.4其他输入20
3.4.5开关门、抱闸电路及其控制电路20
3.4.6对变频器、门机的控制电路21
3.4.7 主回路21
3.5 PLC控制/供电系统的设计22
第4章 PLC扩展模块的选择及I/O口的分配24
4.1 PLC扩展模块的选择24
4.2 I/O口的分配24
4.3 PLC I/O硬件连接28
第5章软件设计30
5.1召唤信号响应及清除功能30
5.2自动定向功能32
5.3停站控制功能33
5.4厅外开门功能35
第6章 结 论41
参考文献42
致 谢43
附录Ⅰ外文及原文 44
附录Ⅱ 总电路图51
附录Ⅲ程序梯形图 52
摘 要
电梯是标志现代物质文明的垂直运输工具、是机—电一体化的复杂运输设备。它涉及电子技术、机械工程、电力电子技术、微机技术、电力拖动系统和土建工程等多个科学领域。目前电梯的生产情况和使用数量已成为一个国家现代化程度的标志之一。
本次设计主要将可编程序控制器（PLC）和计算机应用到电梯的控制系统中去，以五层电梯为例来完成单台电梯PLC控制系统的总体设计方案、组成及模块化程序设计。通过三菱FX2N与计算机通信来实现对电梯系统运行的控制。首先确定电梯类型为客货两用梯，电梯载重量为1000千克，梯速为1.5米/秒，曳引电动机的转速为1000转/秒；再根据串联阻抗前后电动机的机械特性，选择合适的电梯速度控制曲线，实现电梯的交流调速；其次是电梯运行控制部分设计，包括轿厢门控制电路、平层控制电路、显示电路、集选控制电路、电梯消防运行回路；输入口计算点为58，输出口计算点数为35，选用三菱FX2-80MRPLC型的PLC，并进行了外围接线设计；最后进行软件编程。
关键词：电梯；交流调速；PLC
Abstract
Elevator is in close connection with the machinery of large-scale electrical machinery and electronic products. Mainly by the room, Wells Road, Car, door systems and electrical control system. Accompanied by the development of the construction industry, to provide for the construction of the elevator up and down traffic and transport industries are developing rapidly. Elevator is not only an important link in the production of equipment, but also a life of work and the necessary equipment, can be expected that, with the development of society, elevator products in people's material and cultural life and the car will be has become one of the important transportation equipment. The design mainly PLC (PLC) and computer application to the elevator control system, and to five-story elevator as an example to complete a single lift PLC program control system design, composition and modular program design . Mitsubishi FX2N through computer communications and to achieve operation of the elevator control system. Selection of Mitsubishi FX2N PLC, the use of 220V AC power for the pressure. PLC in the I / O interface distribution, code-named after the combination with and to determine a variety of soft-in relays, data areas, access code, commonly used commands, such as the preparation of rules and code. Choose the exchange of two-speed motor to achieve the lift and drag, the use of floor sensors to achieve inter-floor flip; display driver circuit using light emitting diode LED display screen body composition. Focus on the safety of PLC control circuitry, level control circuit, the design of gate switch and door switch to start the procedure, uplink downlink procedures, floor control procedures, automatic procedures for the preparation of orientation. PLC elevator control system only needs a little improvement can be applied to more high-performance requirements of the elevator. All this indicates that the series PLC is not only high reliability to meet the elevator on the actual needs, but also in the control and performance can replace similar imported products, and application of breakthroughs in the field of elevator to a wider range of industries, the future will be more for the broad.
Key words：PLC; Elevator; Logical control; Programming
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