搜索
ActuatorsSA07.1–SA48.12ElectricactuatorsModernautomationtechnologyrequiresareliableinterfacebetweenthecontrollerandvalvewhichcontrolsthemedia.Thisconnectionisuniver-sallymadebyelectricactuators.AUMAactuatorsprovidethecompleteanswerforallvalveoperationandcontrolrequirements.AUMAactuatorsareavailableforopen-closeorforregulatingduty.ApplicationsAUMAvalvecontrolAUMAactuatorsareworkingreliablyinvariousindustriesworldwide.WATERWASTEWATERINDUSTRIALPLANTSDISTRICTHEATINGPETRO-CHEMICALINDUSTRYPOWERPLANTS3TechnicaldataSizeTrippingtorquemax.ft.lbsOutputspeedRPM1)SA07.1204.8–216SA07.5454.8–216SA10.1884.8–216SA14.11854.8–216SA14.53704.8–216SA16.17404.8–216SA25.115004.8–108SA30.129604.8–108SA35.159004.8–54SA40.1118004.8–38SA48.1236004.8–19Forfurthertechnicalinformationrefertoseparatedataanddimensionsheets.1)at60HzsupplySA25.1–SA48.1SA07.1–SA16.1AUMAactuatorsmeettheparticularrequirementsforvalveoperation:–Heavydutydesign–Reliableperformance–Widetorquerange–Largerangeofoutputspeeds(inincrementsofthefactor1.4)–Easyinstallationandstart-up–FlexiblemountingorientationThisbrochureprovidesdetailedinfor-mationonactuatorsforopen-closeduty,typerangeSA.Forinformationonactuatorsformod-ulatingduty,AUMAtypeSAR,refertothecorrespondingdatasheetandbul-letins.4DesignprincipleAUMAmulti-turnactuatorsareofamodular,uniformdesignovertheentirerangebothelectricallyandmechanically.Multi-turnactuatorsActuatorswhichtransmitatorqueforatleastonecompleterevolutiontothevalve(accordingtoISO5210).EnclosureAsastandardallAUMAmulti-turnactutors,includingmotor,haveaNEMA4enclosure(IP67accordingtoEN60529).Thishighclassofenclosure,whichpreventstheingressofdustandwater,isachievedbyusingradialsealsandO-rings.Thisguaranteesreliablefunctionevenunderextremeenvironmentalconditions.MotorUnseatingvalvesfromtheendposi-tionsoftraveloftenrequiresparticu-larlyhighstartingtorque.AUMAhasdevelopedspecialinductiontypemotorsforthispurpose.Asstandard,AUMAthreephasemotorsareratedfor15minuteduty.ThetropicalizedwindinghasClassFinsulation.Threethermoswitchesareembeddedinthewindings.Ifcon-nectedintothecontrolcircuit,theywillprotectthemotoragainstdamageduetohightemperature,resultingfromexcessiverunningtimeorastalledmotorandwilltripat285°degreesF.Aninternalplug/socketelectricalcon-nectorandsimple4-boltmontingflangebetweenthemotorandactua-torhousingfacilitatequickandeasyexchangewhenrequired.Inaddition,avarietyofmotorssuchas30minuteduty,singlephaseorDCarealsoavailable.Consultourtechni-caldatasheetsforavailability.ControlunitFordifferenttypesofvalves,theactu-atorhasthecapabilityoflimitortorqueseatingattheendoftravel.Twoinde-pendentmechanismsareprovided:limitswitching(countergearmecha-nism)andtorqueswitching(slidingwormmechanism).Thesetwodevicestriptherelatedswitches,whichinterruptthecontrolcircuitandde-energizethemotor.Atthesametime,theycanbeusedtosignaltheendoftravelposition.AIIcomponentswhichaffectthefunc-tionofthecontrolunitaremadeofcor-rosion-proofmetallicmaterials.5Plug/socketconnectorAUMAmulti-turnactuatorsareequippedwithplug/socketforexternalconnectionofmotorandcontrols.Thisoffersmanyadvantages:–simpleandfastfunctionaltestingatthevalvefactoryoratthesite–duringmaintenance,notimeisconsumedforremovingandtag-gingwires–correctwiringismaintainedevenafterremovingandrefittingtheac-tuator.OntypesSAFMandSAExplug/socketconnectorsarenotpermitted;thereforeterminalsareused.GearingThemotorsaremountedtoruggedcastirongearhousings.Forspeedreduction,thewellprovedprincipleofwormgearingisused.Thewormwheelmadeofspecialbronzeismounteddirectlyonthehollowoutputshaft.Thewormshaftandoutputshaftruninamplesizedballbearings.Thegearcaseissealedandfilledwithlubricant.Thisprovideslong-termmaintenance-freeservice.ManualoperationSet-upandemergencyoperationarepossibleinthemanualmode.Byoper-atingthehand/autoleverthemotordriveisdisconnectedandthehandwheelisengaged.Sincediscon-nectionbetweenmotoranddriveshaftismadebeforetheselflockingworm/wormwheel,easychangeovertothemanualmodeispossibleeveniftheactuatorisloadedatfullratedtorque.Whenthemotorisenergizedtheman-ualmodeisautomaticallydisen-gaged.Duringelectricoperation.thehandwheeldoesnotrotate.6ControlunitLimitandtorqueswitching,aswellasoptionaldevicesforpositionfeedback,arecontainedinthecon-trolunit.Allsettingspindlesandscrewsareclearlyarrangedonaneasilyaccessiblefaceplate.TorqueswitchingThetorqueswitchingisbasedontheprincipleoftheslidingworm.Thewormcanbeaxiallydisplacedonthedriveshaftagainstdiskspringsateachendoftheworm.Thismovementistransmittedmechanicallytothetorqueswitches.Therequiredtrippingtorquecaneasilybesetatthecorre-spondingdialandreaddirectlyinft.lbs.Thetorqueswitchingalsoactsasoverloadprotectionforthevalveovertheentiretravelandcansignalapossiblefault.LimitswitchingTheturnsoftheoutputshaftaretrans-mitteddirectlytoacountergearmech-anism.Thebrasscountergearshavehighsettingaccuracyandrepeatabil-ity.Byturningthecorrespondingset-tingspindle,thelimitswitchingcanbesetbyscrewdriver,bothquicklyandeasily,independentfortheendposi-tionsOPENandCLOSED.7Plug/socketconnectorAUMA