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4-20mAELECTRO-PNEUMATICPOSITIONERATEXEExdFeatures:ATEXcertifiedII2GEExmdIIBT5FastandaccurateresponseHazardousorsafeareauseLowairconsumptionNamurmounting—quickandeasyRobustEconomicallypricedSpecifications:Mainairsupply1.4~7bar,20~100psiControlsignal4-20mADCAirfiltration5MicronsorbetterProtectionIP66Linearity±2%FullScaleHysteresis1%FullScaleSensitivity±0.5%FullScaleRepeatability±0.5%FullScaleAirconsumption5l/min@1.4bsupplyFlowcapacity80l/min@1.4bsupplyApplications:Idealforhazardousareas(ATEXII2GEExmdIIBT6)butalsosuitableforsafeareainstallations.Providesmodulatingcontrolreceivingcontrolsignalsfrom4-20mAcontrollersorcontrolsystems.4-20mAinputonly—nooutputtransmissioninstandardmodel.Installation:TheYT-1000RhasaquickandsimpletomountNamurcompliantdriveshaft.Airconnectionsare1/4”NPT.Electricalconnectionvia1/2”cableglandinEExdjunc-tionbox.Dimensions:0203/1Wereservetherighttoamendspecifications.Uncontrolledcopynotsubjecttoautomaticupdates.TYPEYT-1000RGeneral:TheYT-1000provideselectro-pneumaticmodulationforrotary(1/4turn)pneumaticactuators.Fedwithaconstant5micronfilteredairsupplytodrivetheunit(max100psi),theYT-1000setsthepositionoftheactuatorrelativetoa4-20mADCinputsignal.Anychangetotheinputsignalresultsinacorrespondingchangetotheactuator’sposition.TheYT-1000Roffersfastandaccurateresponsewithlowairconsumption.Aninletairsupplygaugeisprovided.1:Mainhousingbase2:Mainhousingcover3:EExdJunctionbox4:Namuroutputdrive5:PressuregaugeElectro-pneumaticpositionerYT-1000SeriesINSTALLATION,OPERATION&MAINTENANCEMANUAL(YT-1000RRotaryType)-2-1.GENERALTheelectro-pneumaticpositionerYT-1000Risusedforrotaryoperationofpneumaticrotaryvalveactuatorsbymeansofelectricalcontrollerorcontrolsystemswithananalogoutputsignalof4to20mAorsplitranges.2.FEATURES•Thereisnoresonanceintherangeof5~200Hz.*Performing1/2SplitControlwithoutanyothersubstitutes.*Easytoadjustzeroandspan.*EasytoconvertfromReverseActiontoDirectActionorviceversa.*EasyFeedbackConnection.*Fastandaccurateresponse.*Lowairconsumption.*Easytoprotectfromhuntingeffectbyusingoutputorificeinsmallsizeofactuator.*DesignedasMulti-porttypeforairtubing.*Easytoinstallairtubingconnectioninanydirection.*Designedasblockbuildstructureformaintenanceandrepair.3.SPECIFICATIONYT-1000RTypeItemSingleActingDoubleActingInputSignal4~20mADCbelow24V(1/2SplitRangeavailable)Impedance250±15SupplyPressure0.14~0.7MPaStroke0~90DegAirConnectionPT(NPT)1/4GaugeConnectionPT(NPT)1/8ConduitPF1/2ExplosionProofExiallBT6,ExdmllBT6,ExdmllCT6DegreeofProtectionIP66AmbientTemperature-20C~70CLinearity±2%F.S.Hysteresis1%F.S.Sensitivity±0.5%F.S.Repeatability±0.5%F.S.AirConsumption5LPM(Sup.=0.14MPa)FlowCapacity80LPM(Sup.=0.14MPa)MaterialAluminumDiecastingWeightApprox2.8kgwithjunctionbox-3-5.STRUCTURES6.PRINCIPLEOFOPERATIONIncreasetheinputcurrentsignaltochangetheliftpositionofvalve.Forceexertedbythetorquemotorreducesnozzlebackpressurewithincreaseingapbetweenbetweentheflapperandnozzle.Thenthespoolmovesupwardandtheseatopenssimultaneously.Airpressureof‘OUT1’pipeisdischargedtotheactuator.Aspressureintheactuatorchambergoesup,theactuatorstemstartstorotate.Themovementoftheactuatorstemexertsforcetothefeedbackspringthroughthefeedbackshaftconnections.Theactuatorwillstopatthepointofforcebalanceexertedbytheinputcurrentsignalandthefeedbackspring.7.BLOCKDIAGRAMOFYT-1000R-4-8.INSTALLATION8-1ExampleofattachingYT1000RtopneumaticactuatorExample1.EndbracketExample2.Boxbracket8–2ConnectionwithNamurshaftUsethecorrectbrackettositthefeedbacklevercorrectlyintheactuatorNamurfitting.8-3Camattachmentprocedure(1)UsetheDAfaceofcamtoturntheactuatormainshaftclockwise(viewedfromthepositionerfrontcoverside)atthetimeofinputfeedbackshaft.UsetheRAfacetoturnitcounterclockwise(reverseaction).Correctlyattachthecamtotheflangepartoffeedbackshaft.(2)Attachthecambytheprocedureoflooseningthehexagonalnutwithflangefirst,settingtheusingactuatortothestartpositionandthensettingthecamreferencelineandthebearingcontactpointofspanadjustingarmunittothematchingposition.(3)Donotapplythesupplypressurewhenattachingthecamasitisverydangerous.-5-(4)Whenthepositionerissetatthefactory,thecamistentativelytightenedtotheshaft.Besuretofirmlylockthecamtothelocknut.(tighteningtorque2.0~2.5Nm(20~25kgfcm).8-4Attachingprocedureofopeningdegreeindicationplate(1)Lockthecam,thenadjustthezeropointandspan.ThenfixtheopeningdegreeindicationplatetotheshaftusingtheM3screwprovided.Atthesametime,settheopeningdegreeindicationplatetothepositionoftheattachingreferenceline.9.AIRPIPINGCONNECTIONcFullypurgethepipetoremoveforeignmatter.dYouMUSTuseacleansupplyairfullyremovedofhumidityanddust.eUseYT-200filterregulatortokeepsupplyairpressureconstant.fWhenusingthedoubleactingtypeasthesingleactingtype,plugeitherOUT1orOUT2andalsoremovethepressuregaugeandplugitsconnection.10.ELECTRICALWIRINGcConnectthe(+)and(-)outputterminalsfromtheregulatorwiththe(+)and(-)inputterminals,respectively,inthepositionerJunctionbox.dForExplosionProof,bothpressuretightconduitthreadconnectiontypeandpressuretightpackingtypeareavailable.cUsecableglandin