变频技术应用中英文翻译、外文文献翻译、plc可编程控制器外文翻译

oolowwhentheshorttimewaterscarcityphenomenon,improvedthewatersupplyquality。ConcludingremarkthissystemusesPLCandthefrequencychangerunion,systemsoperationsteadyreliable,irculationinthetruesensetocutthepump,thefrequencyconversionmovement,hadguaranteedeachwaterpumpoperatingefficiencywasmostsuperiorandequipment'ssteadyrunningstartissteady,eliminatesstartedthebigcurrentsurge,becausepump'saveragerotationalspeedreduced,thusmightlengthenpump'sservicelife,mighteliminatetimethestartandengineoff'simpingementeffect.Maycarryonthewatersupplypressurethroughthetouchscreenonman-machinecontactsurfacethehypothesis,atthesametimethesupervisoryequipmentmovementconditionmayinquiretheequipmentfailureinformation,raisestheconstantpressurewatersupplysystem'sautomatedlevelandtofieldapparatus'smonitoringabilitygreatly.