文档介绍：目录引言·················································2可编程控制器(PLC)的概述···························3(一)可编程控制器(PLC)的特点与发展趋势·····3(二)可编程控制器(PLC)的组成···············3(三)可编程控制器(PLC)控制系统的设计原则···3PLC在给水装置系统中的应用···························4PLC给水装置系统的工作原理···························4(一)PLC控制系统主回路部分··················4(二)PLC控制系统控制回路部分··················6可编程控制器PLC控制给水系统的配置··················10(一)PLC的型号选择·································10(二)主电路中元件的选择·························11(三)控制电机给水装置系统PLC的I/O点分配表·······12(四)PLC控制系统的I/O硬件接线图··················13(五)PLC控制给水系统的梯形图······················13结论··················································20参阅文献··············································21引言水是人类生产生活中不可缺少的重要组成部分,随着我国城乡建设的迅速发展,水、电供应不足的矛盾越来越成为人们关注的问题。我国由于水资源和电能短缺比较严重,长期以来在市政供水、高层建筑供水、工业生产循环用水等方面技术一直比较落后,而且自动化程度低。例如,人们日常生活中的用水量越来越大,一天中的用水量的波动也越来越大。以往的供水系统中,水泵的选取往往是按最大供水量来确定,而实际的用水量在不断变化。高峰用水时间较短,这样水泵在很长一