S7200英文教程文件.docx
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S7200英文教程文件.docx
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S7200英文教程文件
S7-200英文
TheS7-200equipmentisdesignedtobeeasytoinstall.Youcanusethemountingholestoattachthemodulestoapanel,oryoucanusethebuilt-inclipstomountthemodulesontoastandard(DIN)rail.ThesmallsizeoftheS7-200allowsyoutomakeefficientuseofspace.
YoucaninstallanS7-200eitheronapaneloronastandardrail,andyoucanorienttheS7-200eitherhorizontallyorvertically.
SeparatetheS7-200DevicesfromHeat,HighVoltage,andElectricalNoise
Asageneralruleforlayingoutthedevicesofyoursystem,alwaysseparatethedevicesthatgeneratehighvoltageandhighelectricalnoisefromthelow-voltage,logic-typedevicessuchastheS7-200.
WhenconfiguringthelayoutoftheS7-200insideyourpanel,considertheheat-generatingdevicesandlocatetheelectronic-typedevicesinthecoolerareasofyourcabinet.Operatinganyelectronicdeviceinahigh-temperatureenvironmentreducesthetimetofailure.
Consideralsotheroutingofthewiringforthedevicesinthepanel.AvoidplacinglowvoltagesignalwiresandcommunicationcablesinthesametraywithACpowerwiringandhigh-energy,rapidly-switchedDCwiring.
ProvideAdequateClearanceforCoolingandWiring
S7-200devicesaredesignedfornaturalconvectioncooling.Forpropercooling,youmustprovideaclearanceofatleast25mmaboveandbelowthedevices.Also,allowatleast75mmofdepth.
Tip:
Forverticalmounting,themaximumallowableambienttemperatureisreducedby105C.MounttheS7-200CPUbelowanyexpansionmodules.
WhenplanningyourlayoutfortheS7-200system,allowenoughclearanceforthewiringandcommunicationcableconnections.ForadditionalflexibilityinconfiguringthelayoutoftheS7-200system,usetheI/Oexpansioncable.
PowerBudget
AllS7-200CPUshaveaninternalpowersupplythatprovidespowerfortheCPU,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.
Prerequisites
Beforeyouinstallorremoveanyelectricaldevice,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.
MountingDimensions
TheS7-200CPUsandexpansionmodulesincludemountingholestofacilitateinstallationonpanels.Refertothetablebelowforthemountingdimensions.
S7-200ModuleWidthAWidthB
CPU221andCPU22290mm82mm
CPU224120.5mm112.5mm
CPU226andCPU226XM196mm188mm
Expansionmodules:
8-pointDCandRelayI/O(8I,8Q,and4I/4Q)46mm38mm
Expansionmodules:
16-pointdigitalI/O(8I/8Q),AnalogI/O(4AI,4AI/1AQ,2AQ),RTD,Thermocouple,PROFIBUS,AS-Interface,
8-pointAC(8Iand8Q),Position,andModem71.2mm63.2mm
Expansionmodules:
32-pointdigitalI/O(16I/16Q)137.3mm129.3mm
InstallingaCPUorExpansionModule
InstallingtheS7-200iseasy.Justfollowthesesteps.
PanelMounting
1.Locate,drill,andtapthemountingholes(M4orAmericanStandardnumber8),usingthedimensionsinthetableabove.
2.Securethemodule(s)tothepanel,usingtheappropriatescrews.
3.Ifyouareusinganexpansionmodule,connecttheexpansionmoduleribboncableintotheexpansionportconnectorundertheaccessdoor.
DINRailMounting
1.Securetherailtothemountingpanelevery75mm.
2.SnapopentheDINclip(locatedonthebottomofthemodule)andhookthebackofthemoduleontotheDINrail.
3.Ifyouareusinganexpansionmodule,connecttheexpansionmoduleribboncableintotheexpansionportconnectorundertheaccessdoor.
4.RotatethemoduledowntotheDINrailandsnaptheclipclosed.Carefullycheckthatthecliphasfastenedthemodulesecurelyontotherail.Toavoiddamagetothemodule,pressonthetabofthemountingholeinsteadofpressingdirectlyonthefrontofthemodule.
Tip:
UsingDINrailstopsmaybehelpfulifyourS7-200isinanenvironmentwithhighvibrationpotentialoriftheS7-200hasbeeninstalledvertically.Ifyoursystemisinahigh-vibrationenvironment,thenpanel-mountingtheS7-200willprovideagreaterlevelofvibrationprotection.
RemovingaCPUorExpansionModule
ToremoveanS7-200CPUorexpansionmodule,followthesesteps:
1.RemovepowerfromtheS7-200.
2.Disconnectallthewiringandcablingthatisattachedtothemodule.MostS7-200CPUandexpansionmoduleshaveremovableconnectorstomakethisjobeasier.
3.Ifyouhaveexpansionmodulesconnectedtotheunitthatyouareremoving,opentheaccesscoverdooranddisconnecttheexpansionmoduleribboncablefromtheadjacentmodules.
4.UnscrewthemountingscrewsorsnapopentheDINclip.
5.Removethemodule.
RemovingandReinstallingtheTerminalBlockConnector
MostS7-200moduleshaveremovableconnectorstomakeinstallingandreplacingthemoduleeasy.RefertoAppendixAintheS7-200ProgrammableControllerSystemManualtodeterminewhetheryourS7-200modulehasremovableconnectors.Youcanorderanoptionalfan-outconnectorformodulesthatdonothaveremovableconnectors.SeeAppendixEintheS7-200ProgrammableControllerSystemManualforordernumbers.
ToRemovetheConnector
1.Opentheconnectordoortogainaccesstotheconnector.
2.Insertasmallscrewdriverinthenotchinthemiddleoftheconnector.
3.RemovetheterminalconnectorbypryingthescrewdriverawayfromtheS7-200housing.Seethefigurebelow.
ToReinstalltheConnector
1.Opentheconnectordoor.
2.Aligntheconnectorwiththepinsontheunitandalignthewiringedgeoftheconnectorinsidetherimoftheconnectorbase.
3.Pressdownfirmlytorotatetheconnectoruntilitsnapsintoplace.Checkcarefullytoensurethattheconnectorisproperlyalignedandfullyengaged.
PropergroundingandwiringofallelectricalequipmentisimportantforhelpingtoensuretheoptimumoperationofyoursystemandforprovidingadditionalelectricalnoiseprotectionforyourapplicationandtheS7-200.
Prerequisites
Beforeyougroundorinstallwiringtoanyelectricaldevice,ensurethatthepowertothatequipmenthasbeenturnedoff.Also,ensurethatthepowertoanyrelatedequipmenthasbeenturnedoff.
EnsurethatyoufollowallapplicableelectricalcodeswhenwiringtheS7-200andrelatedequipment.Installandoperateallequipmentaccordingtoallapplicablenationalandlocalstandards.Contactyourlocalauthoritiestodeterminewhichcodesandstandardsapplytoyourspecificcase.
Warning:
AttemptstoinstallorwiretheS7-200orrelatedequipmentwithpowerappliedcouldcauseelectricshockorfaultyoperationofequipment.FailuretodisableallpowertotheS7-200andrelatedequipmentduringinstallationorremovalproceduresmayresultindeathorseriouspersonalinjury,and/ordamagetoequipment.Alwaysfollowappropri
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