P0900ZV

描述

严敏、杨阳、郭胜军、于进、沈庆良、严海、魏良余、褚洪峰（上海船舶运输科学研究所，200135）

摘要：本文介绍了在熔盐炉自动系统中，采用Allen-BradleyControlLogix双CPU的PLC控制器，以软件方式实现CPU冗余控制。这是一种花钱少、效果好的提高系统可靠性的有效手段。

关键词：CPU冗余，ControlLogix，编程

PLC是现代工业的三大支柱之一，是可靠性高、应用非常广泛的工业控制产品。在中大型模块化的PLC产品中，CPU模块（中央处理器）是PLC的中心。一些重大的工业生产线往往要求连续运行不能停顿，而可靠性再高的PLC也不能保证故障为零，因此，双CPU的冗余控制是一种满足连续生产要求、提高系统可用性的有效手段。下面以熔盐炉自控系统为实例详述双CPU冗余控制的实现方法。

欧美品牌停产的，常用的“PLC”备品备件

我司产品应用于以下领域：

1,《发电厂DCS监控系统》

2,《智能平钢化炉系统制造》

3,《PLC可编程输送控制系统》

4,《DCS集散控制系统》
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5,《智能型消防供水控制系统》

6,《化工厂药液恒流量计算机控制系统》

7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列

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