FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsPartNo.24-10144-203,Rev.EFX-PCX3721-0IssuedApril2016RefertotheQuickLITwebsiteforthemostup-to-dateversionofthisdocument.ApplicationTheFX-PCX3721ExpansionInput/Output(I/O)ModuleisapartoftheFacilityExplorerFX-PCSeriesProgrammableControllerfamily.FX-PCXsexpandthenumberofpointsconnectedtoanFX-PCA,FX-PCG,orFX-PCVprogrammablecontrollerortoasupervisorycontrollertomonitorandcontrolawidevarietyofHVACequipment.FX-PCXcontrollersoperateonanRS-485BACnet®Master-Slave/Token-Passing(MS/TP)BusasBACnetApplicationSpecificControllers(B-ASCs)andintegrateintoJohnsonControls®andthird-partyBACnetsystems.Note:AtFX-PCTRelease10.1,anewcapabilitywasintroducedallowingFX-PCVs,FX-PCGs,andFX-PCAstocommunicatebyusingeithertheBACnetortheN2fieldbusnetworkingprotocol.TheoperationoftheFX-PCXInput/OutputModuleisnotaffectedbytheselectionoftheBACnetortheN2protocolinthehostcontroller.NorthAmericanEmissionsComplianceCanadaThisClass(A)digitalapparatusmeetsalltherequirementsoftheCanadianInterference-CausingEquipmentRegulations.CetappareilnumériquedelaClasse(A)respectetouteslesexigencesduRèglementsurlematérielbrouilleurduCanada.UnitedStatesThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevicepursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferencewhenthisequipmentisoperatedinacommercialenvironment.Thisequipmentgenerates,uses,andcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructionmanual,maycauseharmfulinterferencetoradiocommunications.Operationofthisequipmentinaresidentialareamaycauseharmfulinterference,inwhichcasetheuserswillberequiredtocorrecttheinterferenceattheirownexpense.InstallationObservetheseguidelineswheninstallingthecontroller:•Transportthecontrollerintheoriginalcontainertominimizevibrationandshockdamage.•Verifythatallpartsshippedwiththecontroller.•Donotdropthecontrollerorsubjectittophysicalshock.PartsIncluded•oneFX-PCXcontrollerwithremovableterminalblocks(PowerandSA/FCbusareremovable)•oneinstallationinstructionssheetMaterialsandSpecialToolsNeeded•threefastenersappropriateforthemountingsurface(M4screwsor#8screws)•one20cm(8in.)orlongerpieceof35mmDINrailandappropriatehardwareforDINrailmount(only)•smallstraight-bladescrewdriverforsecuringwiresintheterminalblocksMountingObservetheseguidelineswhenmountinganFX-PCXcontroller:•Ensurethemountingsurfacecansupportthecontroller,DINrail,andanyuser-suppliedenclosure.•Mountthecontrollerhorizontallyon35mmDINrailwheneverpossible.•Mountthecontrollerinthepropermountingposition(Figure1).•Mountthecontrolleronahard,evensurfacewheneverpossibleinwall-mountapplications.•Useshimsorwasherstomountthecontrollersecurelyandevenlyonthemountingsurface.•MountthecontrollerinanareafreeofcorrosivevaporsandobservetheAmbientConditionsrequirementsinTable9.•Provideforsufficientspacearoundthecontrollerforcableandwireconnectionsforeasycoverremovalandgoodventilationthroughthecontroller(50mm1FX-PCX3721ExpansionInput/OutputModuleInstallationInstructions[2in.]minimumonthetop,bottom,andfrontofthecontroller).•Donotmountthecontrolleronsurfacespronetovibration,suchasductwork.•Donotmountthecontrollerinareaswhereelectromagneticemissionsfromotherdevicesorwiringcaninterferewithcontrollercommunication.ObservetheseadditionalguidelineswhenmountinganFX-PCXcontrollerinapanelorenclosure:•Mountthecontrollersothattheenclosurewallsdonotobstructcoverremovalorventilationthroughthecontroller.•Mountthecontrollersothatthepowertransformerandotherdevicesdonotradiateexcessiveheattothecontroller.•Donotinstallthecontrollerinanairtightenclosure.Figure1:ControllerMountingPositionsDINRailMountApplicationsMountingthecontrollerhorizontalon35mmDINrailisthepreferredmountingmethod.TomountanFX-PCXcontrolleron35mmDINrail:1.Securelymounta20cm(8in.)orlongersectionof35mmDINrailhorizontalandcenteredinthedesiredspacesothatthecontrollermountsinthehorizontalpositionshowninFigure1.2.Pullthetwobottommountingclipsoutwardfromthecontrollertotheextendedposition(Figure2).3.HangthecontrollerontheDINrailbythehooksatthetopofthe(DINrail)channelonthebackofthecontroller(Figure2),andpositionthecontrollersnuglyagainsttheDINrail.4.Pushthebottommountingclipsinward(up)tosecurethecontrollerontheDINrail.ToremovethecontrollerfromtheDINrail,pullthebottommountingclipsouttotheextendedpositionandcarefullyliftthecontrollerofftheDINrail.WallMountApplicationsTomountanFX-PCXcontrollerdirectlyonawallorotherflatverticalsurface:1.PullthetwobottommountingclipsoutwardandensuretheyarelockedintheextendedpositionasshowninFigure2.2.MarkthemountingholelocationsonthewallusingthedimensionsinFigure2andoneofthemountpositionsshowninFigure1.Orholdthecontrolleruptothewallorsurfaceinapropermountpositionandmarktheholelocationsthroughthemountingclips.3.Drillholesinthewallorsurfaceatthemarkedlocations,andinsertappropriatewallanchorsintheholes(ifnecessary).4.Holdthecontrollerinplace,andinsertthescrewsthroughthemountingclipsandintotheholes(oranchors).Carefullytightenallofthescrews.Important:Donotovertightenthemountingscrews.Overtighteningthescrewsmaydamagethemountingclips.Figure2:BackofControllerShowingExtendedMountingClips,DINRailChannel,andMountingDimensions,mm(in.)2FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsFigure3:FX-PCX3721PhysicalFeaturesTable1:FX-PCX3721FeatureCalloutNumbersandDescriptionsPhysicalFeature:DescriptionandReferencesCalloutDeviceAddressDIPSwitchBlock(SeeSettingtheDeviceAddresses)124VAC,Class2SupplyPowerTerminalBlocks(SeeSupplyPowerTerminalBlock)2CoverLiftTab(SeeRemovingtheControllerCover)3SensorActuator(SA)Bus/FieldController(FC)BusTerminalBlock(SeeSA/FCBusTerminalBlock)4End-of-Line(EOL)TerminationSwitch(SeeSettingtheEnd-of-Line(EOL)Switch)5BinaryInput(BI)TerminalBlock:DryContactMaintainedorPulseCounter/AccumulatorMode(SeeTable3)6LEDStatusIndicators(SeeTable7)7SensorActuator(SA)Bus/FieldController(FC)BusPort(RJ-126-pinModularJack)(SeeSA/FCBusPort)83FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsWiringRiskofElectricShock:Disconnectorisolateallpowersuppliesbeforemakingelectricalconnections.Morethanonedisconnectorisolationmayberequiredtocompletelyde-energizeequipment.Contactwithcomponentscarryinghazardousvoltagecancauseelectricshockandmayresultinseverepersonalinjuryordeath.Avertissement:Risquededéchargeélectrique:Débrancherouisolertoutealimentationavantderéaliserunbranchementélectrique.Plusieursisolationsetdébranchementssontpeut-êtrenécessairespour-couperentièrementl'alimentationdel'équipement.Toutcontactavecdescomposantsconducteursdetensionsdangereusesrisqued'entraînerunedéchargeélectriqueetdeprovoquerdesblessuresgraves,voiremortelles.RiskofPropertyDamage:Donotapplypowertothesystembeforecheckingallwiringconnections.Shortcircuitedorimproperlyconnectedwiresmayresultinpermanentdamagetotheequipment.MiseEnGarde:Risquededégâtsmatériels:Nepasmettrelesystèmesoustensionavantd'avoirvérifiétouslesraccordsdecâblage.Desfilsformantuncourt-circuitouconnectésdefaçonincorrecterisquentd'endommagerirrémédiablementl'équipement.Important:Donotexceedthecontrollerelectricalratings.Exceedingcontrollerelectricalratingscanresultinpermanentdamagetothecontrollerandvoidanywarranty.Important:Usecopperconductorsonly.Makeallwiringinaccordancewithlocal,national,andregionalregulations.Important:Electrostaticdischargecandamagecontrollercomponents.Useproperelectrostaticdischargeprecautionsduringinstallation,setup,andservicingtoavoiddamagingthecontroller.FordetailedinformationonconfiguringandwiringanMS/TPBus,FCbus,andSAbus,refertotheFX-PCSeriesControllersMS/TPCommunicationsBusTechnicalBulletin(LIT-12011670)orMS/TPCommunicationsBusforBCMSystemTechnicalBulletin(LIT-12011908).TerminalBlocksandBusPortsSeeFigure3forterminalblockandbusportlocationsonthecontroller.Observethefollowingguidelineswhenwiringacontroller.InputandOutputTerminalBlocksAlloftheinputterminalblocksaremountedonthebottomofthecontrollerandtheoutputterminalblocksaremountedonthetopofthecontroller.SeeTable3formoreinformationaboutI/Oterminalfunctions,requirements,andratings.SA/FCBusTerminalBlockAnFX-PCXcanbeconnectedtoaSensor/Actuator(SA)busoraFieldController(FC)bus,butnottobothbusessimultaneously.TheSA/FCbusterminalblockisaremovable,4-terminalplugthatfitsintoaboard-mountedjack.WhenconnectingtheFX-PCXtoanFCbus,wirethebusterminalblockplugsonthecontroller,andtheothercontrollersinadaisy-chainconfigurationusing3-wiretwisted,shieldedcableasshowninFigure4.SeeTable5formoreinformation.Figure4:FCBusTerminalBlockWiringWhenconnectingtheFX-PCXtoanSAbus,wirethebusterminalblockplugsonthecontrollerandotherSAbusdevicesinadaisy-chainconfigurationusing4-wiretwisted,shieldedcableasshowninFigure5.SeeTable3formoreinformation.4FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsFigure5:SABusTerminalBlockWiringNote:TheSAPWR/SHLDterminaldoesnotsupply15VDC.TheSAPWR/SHLDterminalisisolatedandcanbeusedtoconnect(daisychain)the15VDCpowerleadsontheSAbus(Figure5)orthecableshieldsontheFCbus(Figure4).TheSAbussupervisorsupplies15VDCtodevicesontheSAbusrequiringpower.SA/FCBusPortTheSA/FCbusportonthefrontofthecontrollerisanRJ-12,6-positionmodularjackthatprovidesaconnectionfordevicesontheSAbus,aBluetooth®CommissioningConverter,ZigBee™wirelessdongle,oranFX-ZFR1811WirelessRouter(dependingonwhichbusthecontrollerisoperatingon).TheSA/FCbusportisconnectedinternallytotheSA/FCbusterminalblock.SeeTable5formoreinformation.TheSA/FCbusportpinassignmentisshowninFigure6.Figure6:PinNumberAssignmentsforSensor,SABusandFCBusPortsonControllersSupplyPowerTerminalBlockThe24VACsupplypowerterminalblockisagray,removable,3-terminalplugthatfitsintoaboard-mountedjackonthetoprightofthecontroller.Wirethe24VACsupplypowerwiresfromthetransformertotheHOTandCOMterminalsontheterminalplugasshowninFigure7.Themiddleterminalonthesupplypowerterminalblockisnotused.SeeTable5formoreinformationabouttheSupplyTerminalBlock.Figure7:24VACSupplyPowerTerminalBlockWiringNote:Thesupplypowerwirecolorsmaybedifferentontransformersfromothermanufacturers.Refertothetransformermanufacturer’sinstructionsandtheprojectinstallationdrawingsforwiringdetails.Important:Connect24VACsupplypowertothecontrollerandallothernetworkdevicessothattransformerphasingisuniformacrossthenetworkdevices.Poweringnetworkdeviceswithuniform24VACsupplypowerphasingreducesnoise,interference,andgroundloopproblems.Thecontrollerdoesnotrequireanearthgroundconnection.WirelessNetworkApplicationsThecontrollercanalsobeinstalledinawirelessapplicationusinganFX-ZFRWirelessFieldBusRouter.ToconfigureacontrollerforusewiththeFX-ZFRSeriesWirelessFieldBussystem:Note:FX-PCXscantalkwirelesslyontheFCbusonly.5FX-PCX3721ExpansionInput/OutputModuleInstallationInstructions1.ConnecttheFX-ZFR1811WirelessFieldBusRoutertotheFCbusport(RJ-12modularjack)onthefrontofthecontroller.2.Ensurethatthecontroller'sdeviceaddressDIPswitchesaresettothecorrectdeviceaddress.SeeSettingtheDeviceAddresses.3.SetDIPswitch128toON,whichenableswirelessoperationonthecontroller.Formoreinformationoninstallingacontrollerinawirelessconfiguration,refertotheFX-ZFRSeriesWirelessFieldBusSystemTechnicalBulletin(LIT-12011660).TerminationDetailsAsetofJohnsonControlsterminationdiagramsprovidesdetailsforwiringinputsandoutputstothecontrollers.SeeTable2inthissectionfortheapplicableterminationdiagram.Table2:TerminationDetailsTerminationDiagramsTypeofInput/OutputTypeofFieldDeviceBIDryContact(BinaryInput)TerminalWiringGuidelines,Functions,Ratings,andRequirementsInputandOutputWiringGuidelinesTable3providesinformationandguidelinesaboutthefunctions,ratings,andrequirementsforthecontrollerinputandoutputterminals;andreferencesguidelinesfordeterminingproperwiresizesandcablelengths.InadditiontothewiringguidelinesinTable3,observetheseguidelineswhenwiringcontrollerinputsandoutputs:•Runalllow-voltagewiringandcablesseparatefromhigh-voltagewiring.•Allinputandoutputcables,regardlessofwiresizeornumberofwires,shouldconsistofstranded,insulated,andtwistedcopperwires.•Shieldedcableisnotrequiredforinputoroutputcables.•Shieldedcableisrecommendedforinputandoutputcablesthatareexposedtohighelectromagneticorradiofrequencynoise.•Inputs/outputswithcableslessthan30m(100ft)typicallydonotrequireanoffsetinthesoftwaresetup.Cablerunsover30m(100ft)mayrequireanoffsetintheinput/outputsoftwaresetup.6FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsTable3:FX-PCX3721TerminalBlocks,Functions,Ratings,Requirements,andCablesDetermineWireSizeandMaximumCableLength1Function,Ratings,RequirementsTerminalLabelTerminalBlockLabelSeeGuidelineAinTable4BinaryInput-DryContactMaintainedMode0.01secondminimumpulsewidthInternal18V,3kohmpullupINnBINARYINPUTBinaryInput-PulseCounter/AccumulatorMode0.01secondminimumpulsewidth(50Hzat50%dutycycle)Internal18V,3kohmpullupBinaryInputCommonforallBinaryInput(IN)terminalsNote:AllBinaryICOMnterminalsshareacommon,whichisisolatedfromallothercommons,excepttheConfigurableOutput(CO)common(OCOMn)whentheCOisdefinedasanAnalogOutput.ICOMn1SeeTable4todeterminewiresizeandcablelengthsforcables.CableandWireLengthGuidelinesTable4definescablelengthguidelinesforthevariouswiresizesthatmaybeusedforwiringlow-voltage(<30V)inputandoutputs.Table4:CableLengthGuidelinesforRecommendedWireSizesforLow-Voltage(<30V)InputsandOutputsAssumptionsMaximumCableLengthandTypeWireSize/GaugeandTypeGuideline100mVmaximumvoltagedropDependingoncableandtheconnectedinputoroutputdevice,youmayhavetodefineanoffsetinthesetupsoftwarefortheinputoroutputpoint.457m(1,500ft)twistedwire1.5mm2(18AWG)strandedcopperA297m(975ft)twistedwire0.8mm(20AWG)strandedcopper183m(600ft)twistedwire0.6mm(22AWG)strandedcopper107m(350ft)twistedwireN/A(24AWG)strandedcopper100mVmaximumvoltagedropDependingoncableandtheconnectedinputoroutputdevice,youmayhavetodefineanoffsetinthesetupsoftwarefortheinputoroutputpoint.229m(750ft)twistedwire1.5mm2(18AWG)strandedcopperB137m(450ft)twistedwire0.8mm(20AWG)strandedcopper91m(300ft)twistedwire0.6mm(22AWG)strandedcopper61m(200ft)twistedwireN/A(24AWG)strandedcopperN/ASeeFigure8todeterminecablelength.Usetwistedwirecable.SeeFigure8toselectwiresize/gauge.UsestrandedcopperwireCMaximumCableLengthversusLoadCurrentUseFigure8toestimatethemaximumcablelengthrelativetothewiresizeandtheloadcurrent(inmA)whenwiringinputsandoutputs.Note:Figure8appliestolow-voltage(<30V)inputsandoutputsonly.7FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsFigure8:MaximumWireLengthforLow-Voltage(<30V)InputsandOutputsbyCurrentandWireSizeSA/FCBusandSupplyPowerWiringGuidelinesTable5providesinformationaboutthefunctions,ratings,andrequirementsfortheFX-PCXcontrollercommunicationbusandsupplypowerterminals;andguidelinesforwiresizes,cabletypes,andcablelengthswhenwiringthecontrollercommunicationbusesandsupplypower.InadditiontotheguidelinesinTable5,observetheseguidelineswhenwiringanSAorFCbusandthe24VACsupplypower:•Runalllow-voltagewiringandcablesseparatefromhigh-voltagewiring.•AllSAandFCbuscables,regardlessofwiresize,shouldbetwisted,insulated,strandedcopperwire.•ShieldedcableisstronglyrecommendedforallSAandFCbuscables.•RefertotheFX-PCSeriesControllersMS/TPCommunicationsBusTechnicalBulletin(LIT-12011670)orMS/TPCommunicationsBusforBCMSystemTechnicalBulletin(LIT-12011908)fordetailedinformationregardingwiresizeandcablelengthrequirementsfortheSAandFCbuses.8FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsTable5:CommunicationsBusandSupplyPowerTerminalBlocks,Functions,Ratings,Requirements,andCablesRecommendedCableType1Function,ElectricalRatings/RequirementsTerminalLabelsTerminalBlock/PortLabelFCBus:0.6mm(22AWG)stranded,3-wiretwisted,shieldedcablerecommended.SABus:0.6mm(22AWG)stranded,4-wire(2twisted-pairs),shieldedcablerecommended.Note:OntheSABus,the+and-wireareonetwistedpair,andtheCOMandSAPWRarethesecondtwistedpairofwires.FCorSABusCommunications+-FCBUS2orSABUS2SignalReference(Common)forFCorSABuscommunicationsCOMSHLDonFCBus:Isolatedterminal(optionalshielddrainconnectionSAPWRonSABus:15VDCpowerleadconnectionNote:TheSAPWRterminalonacontrollerdoesnotsupply15VDC.TheSAbussupervisorsupplies15VDCtodevicesontheSAbusrequiringpower.SHLDorSAPWRBluetoothCommissioningConverterretractablecableor24AWG3-pairCAT3Cable<30.5m(100ft)RJ-126-PositionModularConnectorprovides:FCorSABusCommunicationsFCorSABusSignalReferenceand15VDCCommonCommissioningConverterorFX-ZFR1811WirelessRouter(MaximumtotalcurrentdrawforSABusis240mA.)SA/FCBUS2(Port)0.8mmto1.5mm2(18AWG)2-wire24VACPowerSupply-HotSupplies20-30VAC(Nominal24VAC)HOT24~24VACPowerSupply-Common(IsolatedfromallotherCommonterminalsoncontroller.)COM1SeeTable4todeterminewiresizeandcablelengthsforcables.2TheSABusandFCBuswiringrecommendationsinthistableareforMS/TPbuscommunicationsat38,400baud.Formoreinformation,refertotheFX-PCSeriesControllersMS/TPCommunicationsBusTechnicalBulletin(LIT-12011670)orMS/TPCommunicationsBusforBCMSystemTechnicalBulletin(LIT-12011908).SetupandAdjustmentsSettingtheDeviceAddressesFX-PCXcontrollersaremasterdevicesonMS/TP(SAorFC)buses.Beforeoperatingcontrollersonabus,youmustsetavalidanduniquedeviceaddressforeachcontrolleronthebus.Yousetacontroller'sdeviceaddressbysettingthepositionsoftheswitchesontheDIPswitchblockatthetopofthecontroller(Figure3).Deviceaddresses4through127arethevalidaddressesforthesecontrollers.TheDIPswitchblockhaseightswitchesnumbered128,64,32,16,8,4,2,and1.Switches64through1aredeviceaddressswitches.Switch128isamodeswitchthatenablesacontrollertooperateonanFX-ZFRSeriesWirelessFieldBus.Switch128mustbesettooffforallhard-wiredSAandFCbusapplications.Setswitch128toONforwirelessFCbusapplicationsonly.Figure9:DeviceAddressDIPSwitchBlockSettoAddress21Note:FX-PCXcontrollersshipwithswitch128ONandtheremainingaddressswitchesoffrenderingthecontrollerswiredslavedevices,whichdonotoperateonMS/TPbuses,butwillnotinterferewithbusoperation.Setavalidanduniquedeviceaddressonthecontrollerbeforeapplyingpowertothecontrolleronthebus.TosetthedeviceaddressesonFX-PCXcontrollers:9FX-PCX3721ExpansionInput/OutputModuleInstallationInstructionsNext 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