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1、PLCisappliedinwaterpressureofcontrolsystemF.BrichauandJ.Deconinck*Abstract:Theauthorintroducesthecontrolprinciple,interfaceandadvantagesinthisFrequencyConverter–PLCcontrolsystem.ItsolvedeffectivelyproblemsuchasbigloadfluctuationandfrequentadjustmentbythefrequencyConverter–PLCcon
2、troltechnique.AndithasprovedthatthefrequencyConvertercontrolsystemhasadvancedtechniqueandnotablebenefit.Inaddition,ithasgoogapplicationValueandmorereserchvalue.Keyword:FrequencyConverter,PLC,Regulator,ControlSystemCurrently,thewaterlevelcontrolinalargepartoftheelectricalpumpsare
3、nottowinggearshiftsystem,nogearshiftmostoftheelectricalenergyconsumedinthewatersupplytothefrequentchangesinthepumpsstopped.Thisnotonlymakestheelectricalworkininefficientzones,cutshorttheusefullifeofelectricalandelectricalequipmentforthefrequentfailuretostopthehighrate,leadingtos
4、eriouswasteofwaterresources,systemmaintenance,repairslargerworkload.Withhighlivingwaterandindustrialwatergraduallyincreased,thetraditionalcontrolmethodsthoseareoutdated.Originallyusedforartificialwaterlevelcontrol,waterlevelduetothelackofaccuratepositioninghourmonitoring,itisdif
5、ficulttoaccuratelycontrolthepumpshavestopped;Usingbuoysormechanicalcontroldevicessuchaswatersupplysituationhasmadesomechanges,butbecauseofmechanicalfailuremoredevices,poorreliabilitytomaintenancewillfacegreattrouble.Frequencyconversiontechnology,withitssuperiorityintheareaofener
6、gyefficiencyandHengyapressurecontrolsystemcanbesolvedbytheexistenceoftheaboveproblems.ConsiderselectingChanpianjiorPlcandtransducercombinationatthecoreofthesystemcanachieveabettercontrolresults.Butinsoftwaredesign,PlcprogrammingofmorethanMicrocontrollerconcise,andvisual;Fromtheh
7、ardwareinterfaceconsiderations,Microcontrollercircuitslightlycomplex;Fromtheeconomicconsiderations,thePlcprocessesaremature,costandsmallPlcMicrocontrolleralittle,becausethesystemparameterstobeadjustedinaccordancewiththesituationontheground,Plcsoftware,thetimeparametersadjustment
8、ssimpler,somoreconducivetoafter-salepersonnel.F
