PLC冗余控制在超纯水控制系统中的应用  

PLC Redundancy Control Application in Ultrapure Water Control System

作　　者：张凤西 郑萍[1] 吴晨 冯济武 刘江 

机构地区：[1]西华大学电气信息学院,成都610039 [2]成都京东方光电科技有限公司,成都611731

出　　处：《自动化与仪表》2013年第11期44-47,共4页Automation & Instrumentation

基　　金：四川省重点学科(电力电子与电力传动)基金资助(SZD0503-09-0)

摘　　要：针对某TFT(thin film transistor)-LCD厂超纯水制造系统工艺需求,采用分布式I/O和S7-400H的集中监控的方式进行了控制系统设计,在此基础上选择了基于S7-400H的硬件冗余方式进行系统的冗余设计,并给出了主机架电源冗余、PLC处理器冗余、通信冗余(包括通讯接口、总线接头、总线电缆的冗余)等方面的冗余配置与设计,保证系统的可靠性和稳定性。经过4年的安全运行证明该系统完全满足设计要求。For the requirements of the TFT（thin film transistor）-LCD factory ultrapure water manufacturing system,the distributed I/O and S7-400H way of centralized monitoring was used to design the control system.on the basis of this choice,we adopt S7-400H hardware redundancy to ensure the reliability and stability of the system,and presents the main frame power supply redundancy,PLC processor redundancy,communication redundancy（including communication interface,the bus connector,bus cable redundancy）and other aspects of redundant configuration and design to ensure system reliability and stability.After 4 years of operation,It proved that the system completely meets the design requirements.

关 键 词：超纯水处理 冗余 组态 架构 

分 类 号：TP278[自动化与计算机技术—检测技术与自动化装置]