plc控制变频调速系统设计与调试.doc

plc控制变频调速系统设计与调试 四层电梯的PLC控制 摘 要 在现代社会和经济活动中，计算机技术、自动控制技术和电力电子技术得到了迅速的发展，电梯已经成为城市物质文明的一种标志。特别是在高层建筑中，电梯是不可缺少的垂直运输设备。随着高层建筑飞速发展的今天，电梯行业也随之进入了新的发展时期,电梯控制技术已经发展到了调频调压调速，其逻辑控制也由PLC代替原来的继电器控制，其许多功能是传统的继电器控制系统无法实现的。 本设计针对我国电梯业的现状，将可编程序控制器(PLC)应用于四层电梯进行逻辑控制，通过合理的选择和设计，不但提高了电梯可靠性、可维护性以及灵活性，同时延长了使用寿命，缩短了电梯的开发周期，并提高了电梯的控制水平，改善了电梯运行的舒适感，使电梯达到了较为理想的控制效果。本文所设计的电梯与传统的电梯相比，在运行上具有良好的舒适感，在生活中可以节约电能，取得了良好的经济效益和社会效益，达到了理想的目的。该电梯控制系统具有指层、厅召唤、选层选向、手动和自动等功能，具有集选控制的特点。 在介绍电梯基本结构的基础上，深入分析了电梯的工作原理，阐述了PLC的优点及特点，重点分析了电梯的硬件设计和软件设计，研究并提出了基于PLC电梯控制系统设计的实现方案，最后对本论文的研究内容进行了总结与展望。 关键词 电梯 变频器 PLC控制 变频调速 Four-storey Elevator PLC Control Abstract In the modern social and economic activities, computer technology, automatic control technology and power electronic technology has been rapid development, the elevator has become a symbol of the material civilization city. Especially in the high-rise building, the elevator is indispensable vertical transportation equipment. With the rapid development of high-rise buildings today, elevator industry also has entered a new period of development, elevator control technology has been developed to the FM speed regulator, the logic control by the PLC to replace the original relay control, many of its functions traditional relay control system can not be achieved. The design for the Chinese elevator industry situation, programmable logic controller ( PLC ) is applied to the four layer elevator logic control, through the rational choice and design, not only improve the elevators reliability, maintainability and flexibility, but also prolongs the service life, shortens the development period of the elevator, and improve the elevator control level, improve the operation of the elevator comfort, so that the lift to reach a more satisfactory control effect. The design of the elevator with the traditional elevator, on the run with good comfort, and achieved good economic and social benefits, to achieve the desired purpose. The elevator control system with that layer, cal