D661valves-(moog伺服阀样本)

CAUTIONDISASSEMBLY,MAINTENANCE,ORREPAIROTHERTHANINACCORDANCEWITHTHEINSTRUCTIONSHEREINOROTHERSPECIFICWRITTENDIRECTIONSFROMMOOGWILLINVALIDATEMOOG’SOBLIGATIONSUNDERITSWARRANTY.D661SeriesISO4401Size05InstallationandOperationInstructionServoandProportionalControlValveswithIntegratedElectronics1.INTRODUCTIONThismanualprovidesinstructionsandproceduresnecessarytoinstall,operateandtroubleshoottheMoogD661SeriesServoandPropor-tionalControlValves.2.OPERATIONGeneralTheServovalvesD661-G,SandHSeriesandtheProportionalFlowControlValvesD661-PSeriesarethrottlevalvesfor2-,3-and4-wayapplications.Withproportionalflowcontrolvalves,5-wayapplicationsarealsopossible.Thesevalvesaresuitableforelectrohydraulicposition,velocitiy,pressureorforcecontrolsystemswithhighdynamicresponserequirements.D661-G,SandHThespoolofthemainstageisdrivenbyanozzleflapperorServoJet®pilotstage,optionalwithorwithoutadditionalmechanicalfeedback(nozzleflapperonly).WithversionsD661-SandHincaseofanelectricalsupplyfailurethespoolismovedintoapreferredpositionbyactionofanadditionalmechanicalfeedback.ELECTROHYDRAULICVALVECUT-AWAYFigure1MoogSeriesD661-GSeries,withoutadditionalmechanicalfeedbackXTAPBT2YConnectorSpoolBushingScrewPlugforNullAdjustSeriesModelsSeriesGServovalvewithnozzle-flapperorServoJet®pilotstage,spoolinbushing,withoutadditionalmechanicalfeedbackSeriesSServovalveconfiguredlikeversionG,butwithadditionalmechanicalfeedbackSeriesHServovalveconfiguredlikeversionS,butwithimprovedperformance(highresponse)SeriesP...A/BProportionalvalvewithServoJet®pilotstage,spoolinbody,withoutadditionalmechanicalfeedbackSeriesP...F/GProportionalvalveconfiguredlikeversionP...A/B,butwithnozzleflapperpilotstageandadditionalmechanicalfeedbackJetpipeAnnularareaNozzleReceiver2OperatingPrincipleoftheTwo-StageValveAnelectricinputsignal(flowratecommand)isappliedtotheintegratedcontrolamplifierwhichdrivesacurrentthroughthecoilsofthepilotstagetorquemotor.Thusthedeflectednozzle-flappersystemproducesapressuredifferenceacrossthedriveareasofthespoolandeffectsitsmovement.Thepositiontransducerwhichisexcitedviaanoscillatormeasuresthepositionofthespool(actualvalue,positionvoltage).Thissignalisthenrectifiedbyademodulatorandisfedbacktothecontrolamplifierwhereitiscomparedwiththecommandsignal.Thecontrolamplifierdrivesthetorquemotoruntilcommandvoltageandfeedbackvoltageareequal.Thus,thepositionofthespoolisproportionaltotheelectriccommandsignal.ProportionalFlowControlValveD661-...PThenozzleflapperdesignofthepilotstagehasbeenconvertedintoanimprovedversionwithjetpipeamplifier(ServoJet®).TheServoJet®pilotstageconsistsmainlyoftorquemotor,jetpipeandreceiver.Acurrentthroughthecoildisplacesthejetpipefromneutral.Thisdisplacementcombinedwiththespecialshapeofthenozzledirectsafocussedfluidjetmoreintoonereceiverborethanintotheother.Thejetnowproducesapressuredifferenceinthecontrolports.Thispressuredifferenceresultsinapilotflow,whichinturncausesaspooldisplacement.Thepilotstagedrainisthroughtheannularareaaroundthenozzletotank.OperatingPrincipleoftheTwo-StageValveAnelectricinputsignal(flowratecommand)isappliedtotheintegratedcontrolamplifierwhichdrivesacurrentthroughthecoilofthepilotstagetorquemotor.Thethusdeflectedjetpipeproducesapressuredifferenceacrossthedriveareasofthespoolandeffectsitsmovement.Thepositiontransducerwhichisexcitedviaanoscillatormeasuresthepositionofthespool(actualvalue,positionvoltage).Thissignalisthendemodulatedandfedbacktothecontrollerwhereitiscomparedwiththecommandsignal.Thecontrollerdrivesthetorquemotoruntiltheerrorbetweencommandsignalandfeedbacksignaliszero.Thusthepositionofthespoolisproportionaltotheelectriccommandsignal.FailsafeVersionD661-...PForapplicationswithproportionalcontrolvalveswherecertainsafetyregulationsareapplicable,adefinedmeteringspoolpositionisneededinordertoavoidpotentialdamage.Therefore,failsafeversionsareofferedasanoptionfortheMOOGproportionalvalves.Afterexternaltriggering,thisfailsafefunctioncausesadefinedmeteringspoolposition.MechanicalFailsafeversion(biasedpilotstagewithmechanicalfeedback)Thesafepositionofthespoolwillbeobtainedaftercutoffofpilotpressuresupply(externalpilotconnection)oroperatingpressuresupply(internalpilotconnection).Thissafepositioncanonlybeobtainedwith1barpilotpressure.D661-P...A/BWD661-P...A/BUProportionalValveD661-P...A/BWandD661-P...A/BUSerieswithelectricallyoperatedfailsafefunctionProportionalValveD661-P...APSerieswithelectricallyoperatedfailsafefunction2-stageProportionalValveD661-...P...A/BSeriesServovalveD661-...SandHSerieswithadditionalmechanicalfeedbackATTENTION3Electriccharacteristicsofthe2/2-waysolenoidvalveConnectorwiringFunctionelectromagneticNominalvoltage24VDCNominalpower12WDIN43650-1FormA:2+PE-PG9WithfailsafeversionsRandL,adefinedspoolpositionisreachedwhentheelectricsupplytothevalveelectronicsisswitchedoffwhilethepilotpressureisstillapplied.WithversionM,theresultingspoolpositionisundefined.ElectricallyoperatedfailsafeversionThesafepositionofthespoolwillbeobtainedafterswitchingofftheintegrated2/2-waysolenoidseatvalve.WithfailsafeversionsW,