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TheS7-200equipmentisdesignedtobeeasytoinstall.Youcanusethemountingholestoattachthemodulestoapanel,oryoucanusethebuilt-inclipstomountthemodulesontoastandard(DIN)rail.ThesmallsizeoftheS7-200allowsyoutomakeefficientuseofspace.YoucaninstallanS7-200eitheronapaneloronastandardrail,andyoucanorienttheS7-200eitherhorizontallyorvertically.SeparatetheS7-200DevicesfromHeat,HighVoltage,andElectricalNoiseAsageneralruleforlayingoutthedevicesofyoursystem,alwaysseparatethedevicesthatgeneratehighvoltageandhighelectricalnoisefromthelow-voltage,logic-typedevicessuchastheS7-200.WhenconfiguringthelayoutoftheS7-200insideyourpanel,considertheheat-generatingdevicesandlocatetheelectronic-typedevicesinthecoolerareasofyourcabinet.Operatinganyelectronicdeviceinahigh-temperatureenvironmentreducesthetimetofailure.Consideralsotheroutingofthewiringforthedevicesinthepanel.AvoidplacinglowvoltagesignalwiresandcommunicationcablesinthesametraywithACpowerwiringandhigh-energy,rapidly-switchedDCwiring.ProvideAdequateClearanceforCoolingandWiringS7-200devicesaredesignedfornaturalconvectioncooling.Forpropercooling,youmustprovideaclearanceofatleast25mmaboveandbelowthedevices.Also,allowatleast75mmofdepth.Tip:Forverticalmounting,themaximumallowableambienttemperatureisreducedby105C.MounttheS7-200CPUbelowanyexpansionmodules.WhenplanningyourlayoutfortheS7-200system,allowenoughclearanceforthewiringandcommunicationcableconnections.ForadditionalflexibilityinconfiguringthelayoutoftheS7-200system,usetheI/Oexpansioncable.PowerBudgetAllS7-200CPUshaveaninternalpowersupplythatprovidespowerfortheCPU,theexpansionmodules,andother24VDCuserpowerrequirements.TheS7-200CPUprovidesthe5VDClogicpowerneededforanyexpansioninyoursystem.PaycarefulattentiontoyoursystemconfigurationtoensurethatyourCPUcansupplythe5Vpowerrequiredbyyourselectedexpansionmodules.IfyourconfigurationrequiresmorepowerthantheCPUcansupply,youmustremoveamoduleorselectaCPUwithmorepowercapability.RefertoAppendixAintheS7-200ProgrammableControllerSystemManualforinformationaboutthe5VDClogicbudgetsuppliedbyyourS7-200CPUandthe5VDCpowerrequirementsoftheexpansionmodules.UseAppendixBintheS7-200ProgrammableControllerSystemManualasaguidefordetermininghowmuchpower(orcurrent)theCPUcanprovideforyourconfiguration.AllS7-200CPUsalsoprovidea24VDCsensorsupplythatcansupply24VDCforinputpoints,forrelaycoilpowerontheexpansionmodules,orforotherrequirements.Ifyourpowerrequirementsexceedthebudgetofthesensorsupply,thenyoumustaddanexternal24VDCpowersupplytoyoursystem.RefertoAppendixAintheS7-200ProgrammableControllerSystemManualforthe24VDCsensorsupplypowerbudgetforyourparticularS7-200CPU.Ifyourequireanexternal24VDCpowersupply,ensurethatthepowersupplyisnotconnectedinparallelwiththesensorsupplyoftheS7-200CPU.Forimprovedelectricalnoiseprotection,itisrecommendedthatthecommons(M)ofthedifferentpowersuppliesbeconnected.Warning:Connectinganexternal24VDCpowersupplyinparallelwiththeS7-20024VDCsensorsupplycanresultinaconflictbetweenthetwosuppliesaseachseekstoestablishitsownpreferredoutputvoltagelevel.Theresultofthisconflictcanbeshortenedlifetimeorimmediatefailureofoneorbothpowersupplies,withconsequentunpredictableoperationofthePLCsystem.Unpredictableoperationcouldresultindeathorseriousinjurytopersonnel,and/ordamagetoequipmentandproperty.TheS7-200DCsensorsupplyandanyexternalpowersupplyshouldprovidepowertodifferentpoints.TheS7-200canbeeasilyinstalledonastandardDINrailoronapanel.PrerequisitesBeforeyouinstallorremoveanyelectricaldevice,ensurethatthepowertothatequipmenthasbeenturnedoff.Also,ensurethatthepowertoanyrelatedequipmenthasbeenturnedoff.Warning:AttemptstoinstallorremoveS7-200orrelatedequipmentwiththepowerappliedcouldcauseelectricshockorfaultyoperationofequipment.FailuretodisableallpowertotheS7-200andrelatedequipmentduringinstallationorremovalproceduresmayresultindeathorseriouspersonalinjury,and/ordamagetoequipment.AlwaysfollowappropriatesafetyprecautionsandensurethatpowertotheS7-200isdisabledbeforeattemptingtoinstallorremoveS7-200CPUsorrelatedequipment.AlwaysensurethatwheneveryoureplaceorinstallanS7-200deviceyouusethecorrectmoduleorequivalentdevice.Warning:Ifyouinstallanincorrectmodule,theprogramintheS7-200couldfunctionunpredictably.FailuretoreplaceanS7-200devicewiththesamemodel,orientation,orordermayresultindeathorseriouspersonalinjury,and/ordamagetoequipment.ReplaceanS7-200devicewiththesamemodel,andbesuretoorientandpositionitcorrectly.MountingDimensionsTheS7-200CPUsandexpansionmodulesincludemountingholestofacilitateinstallationonpanels.Refertothetablebelowforthemountingdimensions.S7-200ModuleWidthAWidthBCPU221andCPU22290mm82mmCPU224120.5mm112.5mmCPU226andCPU226XM196mm188mmExpansionmodules:8-pointDCandRelayI/O(8I,8Q,and4I/4Q)46mm38mmExpansionmodules:16-pointdigitalI/O(8I/8Q),AnalogI/O(4AI,4AI/1AQ,2AQ),RTD,Thermocouple,PROFIBUS,AS-Interface,8-pointAC(8Iand8Q),Position,andModem71.2mm63.2mmExpansionmodules:32-pointdigitalI/O(16I/16Q)137.3mm129.3mmInstallingaCPUorExpansionModuleInstallingtheS7-200iseasy.Justfollowthesesteps.PanelMounting1.Locate,dr