变频恒压供水控制系统

论文编号:DQ222   论文字数:16342,页数:36

摘 要：论文讨论了变频恒压供水控制原理，设计了变频恒压供水控制系统。采用了松下PLC（FP0—C32CT）和模拟量输入/输出模块（FP0—A21）、Pro—face触摸屏(GP37W2)以及富士变频器（FVR—E11S）构成一个对水压进行恒定控制的系统。系统能根据不同时间段用水量的不同实现目标压力值的自动调整，同时系统还具有在用水量非高峰期时定时自动切换水泵电机的功能。本设计采用了触摸屏作为人机界面，通过触摸屏的操作可进行参数设置，实现对各种功能的控制，同时还能通过触摸屏对系统当前运行状态进行实时的监控。
关键词：恒压供水；PLC；触摸屏； 模拟量输入/输出模块； 变频器

Abstract：In this thesis, the focus is the principle of frequency conversion constant pressure water supply control, designing frequency conversion constant pressure water supply control system. Using Panasonic PLC (FP0 - C32CT) and analog input / output modules (FP 0-A21). Pro-face Touch screen (GP37W2) and Fujitsu Inverter (FVR - E11S) constitutes a constant pressure control system for water. According to different water instantaneous pressure in different times ,the system could automatically adjust the pressure of water supply system, at the same time, the system has the function—regular automatic switch the pump motor when water consumption is in non-peak period.
  In this design touch screen is used as man-machine interface, because Touch screen and PLC both are universal. Operating the touch screen could control various functions, while touch screen could real-time monitor current states of system .
 Keyword: constant pressure water supply；PLC；touch screen; analog input/output module；transducer

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