基于变频器PLC控制的恒压供水系统

An Inverter PLC Control Based Constant Pressure Water Supply System

通过看具体操作及供水系统运行的演示实验投影,使学生了解恒压供水系统的组成和基本原理,从实际调试中看清外围输入输出连接方法、运行程序的设计、PLC在恒压供水系统中对模拟量的处理和PID控制的基本过程。认识本恒压供水系统借助变频器无级调速特点,通过闭环控制实现了节能、可靠、自动化程度高等优点的供水目的。

Through watching the demonstration experiment and the water supply system operation it will make students understand the construction and the basic principle of the constant pressure water supply system;the external input and output connection methods, the operating procedures design, the processing of analog by PLC in the constant pressure water supply system,as well as the basic process of PID control. It is necessary to make the students recognize that the constant pressure water supply system has fulfilled the purpose of water supplying featured with energy saving, reliable, high automatic, as well as other advantages through loop control,with the help of the step-less speed regulation feature of the inverter.