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EPRO艾默生 CON021/916-160
EPRO艾默生 CON021/916-160
若自來水供水因故壓力不足或短時缺水時,可能影響產(chǎn)品質(zhì)量,嚴重時使產(chǎn)品報廢和設(shè)備損壞。又如當發(fā)生火警時,若供水壓力不足或無水供應(yīng),不能迅速滅火,可能引起重大經(jīng)濟損失和人員傷亡。所以某些用水區(qū)采用恒壓供水系統(tǒng),具有較大的經(jīng)濟和社會意義。
在舊加壓設(shè)備中,恒壓供水一般采用起動或停止加壓站的水泵和調(diào)節(jié)出口閥開度來實現(xiàn)。控制系統(tǒng)是采用繼電接觸器控制線路,這種系統(tǒng)線路復(fù)雜,維護困難,操作麻煩,工人要24小時值班看守,勞動強度大。所以有必要對之進行改造,提高自動化水平。
本文介紹的用于某自來水加壓站快速起動恒壓供水監(jiān)控系統(tǒng),采用松下電工生產(chǎn)的FP3型可編程序控制器(PLC)進行控制,用研華工控機進行監(jiān)控,自動化程度高,整個工作程序自動完成,能清楚地顯示各個設(shè)備的實時狀態(tài),并自動調(diào)節(jié)水壓
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