文档介绍：S7-300PLC在四辊可逆冷轧机系统中的应用
摘要
可编程控制器(PLC)是集计算机技术、自动控制技术、通信网络技术于一体的新型自动控制装置。其性能优越,已被广泛应用于工业控制的各个领域。PLC应用已经成为一个控制领域的潮流,随着我的不断发展和提高,PLC技术将在我国得到更加全面的推广和应用。
随着工业的发展,对冷轧板带生产也提出了更高的要求,进一步促进了冷轧自动控制技术的发展。只有通过高水平的自动控制系统才能够获得高质量的成品带钢,保证板带生产的高效率、高效益、高质量和低功耗。PLC程序的开发以西门子公司的STEP7作为软件平台,实现了轧机系统运行速度控制、轧机运行状态和数据指示等功能。采用了面向对象的程序设计技术,模块化的设计,从而使系统具有良好的可移植性和可维护性。
,设计开发了数据采集和实时监控系统,监控界面画面直观、操作简便、故障处理和报警功能完善,大大减轻了控制操作和系统维护的工作量。根据带钢冷轧生产工艺要求较复杂、速度控制精度高的情况,采用PROFIBUS-DP现场总线技术搭建起系统的控制网络,实现了S7-300与直流调速器,以及S7-之间的通讯,成功地解决了该控制系统要求响应时间快、抗干扰能力强的问题。
关键词:PLC,四辊可逆冷轧机,过程控制,
S7-300PLC in four roller reversible cold rolling mill system of Apply
Abstract
Programmable Logic Controller (PLC) is puter technology, automatic control technology, works of the new technologies of automatic control devices. Its superior performance has been widely used in various areas of industrial control. PLC application control has e a trend, with the level of China's science and technology continue to develop and improve, PLC technology will be prehensive in our promotion and application.
Along with the development of industry, higher requirement is brought forward to the manufacture of cold rolling strap steel, and this also accelerates the development of automation technique of cold reduction. None but through high-leveled automation system can pany obtain finished strap steel product with high quality, and guarantee the manufacturing of strap steel to be with high efficiency, high benefit, high quality and low power consumption. PLC program to the development of the Siemens STEP7 as a software platform, achieved a speed control system mill, mill running instructions and data, and other functions. Using the object-oriented programming techniques, modular design, so that the system has good portability and maintainability.
The use of the Siemens Industrial Control Software , design and development of data acquisition and real-time monitoring system to monitor screen interface intuitive, easy to operate, fault han