PLC在变频节能系统中的应用——黄花机场候机楼空调机组冷却泵变频控制系统介绍

Application in Frequency Conversion and Energy-conservation System of PLC——Frequency Conversion Controlling System of Coolant Pump of Air Conditioning Units in Huang Hua Airdrome

本文从变频节能原理、空调机组运行要求、控制方案的选择、程序设计特点等方面 。

The paper discusses the application of frequency conversion and controlling system of coolant pump of PLC,from respect of the principle of frequency conversion and energy-conservation,the running demand of air conditioning unit,the selection of the controlling scheme,design program etc.