InstallationInstructionsControlLogixRedundantPowerSupplyCatalogNumbers1756-PA75R/A(85-265VACRedundantPowerSupply),1756-PB75R/A(19-32VDCRedundantPowerSupply)UsethispublicationasaguidewheninstallingtheControlLogix™1756-PA75R/Aand1756-PB75R/Apowersupplies.ThesesuppliesmayonlybeusedwithSeriesBControlLogixchassis.To:Seepage:SeeaDescriptionoftheRedundantPowerSupply6SeeanOverviewoftheInstallationProcess6PrepareforInstallation6IdentifytheComponentsofaRedundantPowerSupplySystem7RecognizeRedundantPowerSupplyPhysicalFeatures8UseSystemSet-upRecommendations9AllowSufficientMountingSpace10InstallYourRedundantPowerSupply11GroundYourRedundantPowerSupply13ConnecttheCabletotheRedundantPowerSupplyandtheChassis14AdapterModuleConnectSolidStateRelay15ConnectPower16RouteLinePowerandCables17RemovetheProtectiveLabel18ActivatetheRedundantPowerSupplySystem18SeeInputPowerRequirementsandTransformerSizing19TroubleshootwiththeStatusIndicators20ReplaceaRedundantPowerSupply21See1756-PA75R/Aand1756-PB75R/ASpecifications22Publication1756-IN573C-EN-P-October20032ControlLogixRedundantPowerSupplyImportantUserInformationSolidstateequipmenthasoperationalcharacteristicsdifferingfromthoseofelectromechanicalequipment.SafetyGuidelinesfortheApplication,InstallationandMaintenanceofSolidStateControls(PublicationSGI-1.1availablefromyourlocalRockwellAutomationsalesofficeoronlineathttp://www.ab.com/manuals/gi)describessomeimportantdifferencesbetweensolidstateequipmentandhard-wiredelectromechanicaldevices.Becauseofthisdifference,andalsobecauseofthewidevarietyofusesforsolidstateequipment,allpersonsresponsibleforapplyingthisequipmentmustsatisfythemselvesthateachintendedapplicationofthisequipmentisacceptable.InnoeventwillRockwellAutomation,Inc.beresponsibleorliableforindirectorconsequentialdamagesresultingfromtheuseorapplicationofthisequipment.Theexamplesanddiagramsinthismanualareincludedsolelyforillustrativepurposes.Becauseofthemanyvariablesandrequirementsassociatedwit