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1、杂物电梯控制系统中PLC的应用ThefirstpageofthetechnicaldigestmaintenancedatawebsiteservicetechnologyBBSCurrentlocation:>>trainingcenter>>PLCintheclutterelevatorcontrolsystemSection1theprocedureforpreparingtheelevatorPLCprocedureAuthor:theincreaseinclarityThroughthestudyofPLCfoundation,wehaveac
2、ertainunderstandingofthestructureandworkingprincipleofPLC,andthebasictrapezoidaldrawingandinstructionalmethodareobtained.Nowwe，regoingtogointotheactualapplicationphaseandusethePLCtocontroltheelevator・Here,wefirstlearnasimplecontrolprogram,whichUSESPLCtocontrolasundryelevator・Thes
3、parrowsaresmall,buttheyareallinall.Asacontrolsystem,wemustcontinuetofollowtherequirementsofthedesignsystem・Thefirststepistodesignasystem,firstofallrequireustobeveryunderstanding,theoperationprocessofthesystemtodrawthef1owchartofthewholeoperationprocess,everyfunctionofthesystemreq
4、uirementsinmind.ThesecondstepistocalculatetheconfigurationrequirementsforthePLC,whichmeanstofigureouthowmanyinputsandoutputsyourPLCneedstousethroughoutthesystem・Step3:selectthePLC・AccordingtotheinputandoutputpointsofthePLCthatyoucalculated,thetypeofPLCiscarriedout・ThechoiceofPLCi
5、stobeabletomeettherequirementsofyourdesignsystem,andyouwillbeabletousethebrandspecifications・Step4:designtheelectricaldiagramofthesystemandinstallthewiringdiagram,anddefinetheoutputofthePLCoutput・Stepfive:designladderdiagramPLCforprocesscontrolofelevatorelectricalcontrol,inthecir
6、cuitprinciplediagramandthewiringdiagramdesigndrawingaftercompletionofinstallation,alsomustdesigndrawingandthecircuitprinciplediagramcorrespondstotheladderdiagramprocedureofPLC,PLCladderdiagramprogramisinallkindsofhardandsoftrelaylogiccontrolchart,thelogiccontrolmodeissimilartothe
7、intermediateprocessbetweenthecontrolrelaylogiccontrolcircuitdiagram,soitisoneoftheimportantlinkofPLCelectricalcontrolsystemdesignwork・Designofladderdiagramprogram,shouldpressPLCusingmanualmethods,understandPLCI/Ointerfacedistribution,arrangementandcode,insidethemachineallkindsofs
8、oftrelay,dataarea,channelcode,commonlyus
