可编程序控制器在焦化系统中的应用

The Application of Programmable Controller in Coking System

为克服继电－接触器控制故障可能性大、可靠性低、维修量大等一系列问题，介绍了可编程序控制器（ＰＬＣ）在焦化备煤与筛焦系统中的应用，着重阐述了ＰＬＣ的选型、设计原则，安装调试中的抗干扰措施。

In order to overcome the disadvantages of relay-contactor control, i. e. more failures, low reliability and huge maintenance, the applications of programmable controller (PLC) for coal-prepara- tion in coking process and coke sieve system are introduced. The se- lection of the PLCs, design criteria and the anti-interference measures in installation and test are emphasized.