TrqPrv_Para_Descrip[2]

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1、PF700VCTORQUEPROVING(LIFTING)PARAMETERDESCRIPTIONSDrive:PF700ACVectordrivewithstandardCrane&HoistDutyfirmwareversion4.001ornewer,LiftingTorque/BrakeProvingTheLifting/TorqueProvingfeatureofthePowerFlex700isintendedforapplicationswherepropercoordinationbetweenmotorcontrolandamec

2、hanicalbrakeisrequired.Priortoreleasingamechanicalbrake,thedrivewillcheckmotoroutputphasecontinuityandverifypropermotorcontrol(monitoring“torqueproving”includingcurrentfeedback).Thedrivewillalsoverifythatthemechanicalbrakehascontroloftheloadpriortoreleasingdrivecontrol(brakepr

3、oving).Afterthedrivesetsthebrake,motormovementismonitoredtoensurethebrakesabilitytoholdtheload.LiftingApplicationfunctionalityincludes:²TorqueProving(includesfluxup,useofthelasttorquemeasurementincludingcurrentfeedbackmonitoring).²BrakeProving(includesmodetoslowlylowerloadifbr

4、akeslipsorfails).²FloatCapability²Micro-Positioning²FastStop²SpeedDeviationFault,OutputPhaseLossFault,EncoderLossFault.TheLifting/TorqueProvingfeatureisonlyavailableinVectorfirmwareversions3.xxxandlater.ItisintendedtooperateintheFVCVectorControlmode(see[MotorCntlSel],parameter

5、053)withanencoder.Motormovementismonitoredthroughtheencoderfeedbackwhichexcludestheotherfeedbackmodesfrombeingusedunlessaspecificsetofstepsarefollowedinordertosetupforencoderlessoperation.Extremethoughtandcaremustbeexercisedwhenchoosingtosetupencoderlessoperation.Lifting/Torqu

6、eProvingApplicationProgrammingThePowerFlex700liftingapplicationismainlyinfluencedbyparameters600through611intheTorqueProvinggroupoftheApplicationfile.Theparagraphsthatfollowdescribeprogramming.Figure0.2TorqueProvingFlowPage6of683d09e16410887f342667caa9dec4470.docTorqueProvingW

7、henthedrivereceivesastartcommandtobeginaliftingoperation,thefollowingactionsoccur:1.Thedrivefirstperformsatransistordiagnostictesttocheckforphase-to-phaseandphase-to-groundshorts.AfailurestatusfromeitherofthesetestswillresultinadrivefaultandthebrakerelaywillNOTbeenergized(brak

8、eremainsset).2.Thedrivewillthenquicklyprovidethemotorwithflux