用西门子PLC系统实现油罐自动脱水

The application of Siemens PLC system to achieve the automatic dehydration

中石化广州分公司厂通过西门子S7-400 PLC设定一个基准值来判断传感器是否测到水或油,从而实现自动脱水功能。文章介绍了中燃罐区S7-400控制系统的硬件结构,阐明了利用PLC系统实现罐区自动脱水的逻辑及实现的方法,对改造现有脱水系统具有借鉴作用。

By means of Siemens S7-400 PLC,we set a reference value to determine whether the sensor measures the water or oil,so as to achieve the automatic dehydration.This paper introduces the fuel tank S7-400 control system hardware structure,expounds the logic and method of achieving the automatic dehydration by PLC system,and provides some reference for transforming the current dehydration system.