Miller Electric SCE-1A Specifications

September1973FORM:OM-540MODELSCE-1ASCE-2ASCE-3ASCE-5ASCM-lASCM-2ASCM-3ASCM-5ASTOCKNO.040105040107040109040256040104040106040108040255MODEL/STOCKNO.SER

I~RT~1Ifaportablewatercoolantsystemisused,donotmaketheaboveconnections,aspossibledamagecouldoccurtothecoolantsystemmotor.2-5.CONTACTORCONTROLRECEPTAC

3-2.CURRENTCONTROL(Figure3-2)TheweldingcurrentforeachsequenceisgovernedbythesettingofthethreeAmperageControlswhicharelabeledStartWeldAmperageControl(s

3-5.MANUALCONTROLOFSEQUENCECProvisionsareprovidedformanualtimingofsequenceCtoallowcontinuousweldingforanydesiredtime.Thisisaccomplishedbyconnectingane

11.Selectthepropersizetungstenforthewelding applicationfromTable4-1.12.ConnectanormallyopenswitchintotheContactorControlReceptacle.13.PlacetheOn-OffPo

SLM-lA~2AICE-IA.2ASEQUENCETIMERFLOWCHARTTD1p.o.BeginsPeeflowTimeTO1fi.j~mesOurH.F.On~timaryContacror(Continuouswp.u.Position)pT03p.u.CR6PCIBeginsWeldp

SCM-3ASCE-3ASEQUENCETIMERFLOWCHARTp.s.-picksripdo.-dropsoutIIGis&WaterTOSpu.FL4BeginsTime0nIIIGas&WaterTDFL40f1~TimesOutOffHF.0nStartPositio

SiM-3Ani.L-3ASLQSENCF1OdERFLOWCHARTControlVoltageAvailableMakeReadyH3OpetariceFL1(StanRheostat)pCR1do.ReleasedbyOperator101p..Begin.PrellowTuneIDITini

SCMSAsUE-IASEQUENCETIMERElr)W(hARTSwitchSiinManualPoSition(Starr80VoltPosition)2&3forSwitchOperationS2StartPosition(H.F.Switch)p.::.pthaup-druip

sCM-IASCE-5ASEQUENCETIMERFLOWCHARTCR3pu.TDtpu.IITD5TimesOutR3OperativeMakeReadyI(StartRheostat)toEnergizeGas&WaterPL1FlowStoll~.PL4GoesOutCR2pu.

SECTION5MAINTENANCE5-1.MAINTENANCESAFETYreiunr.]1Besurethebranchcircuit,orthemaindisconnectswitchhasbeenopenedbeforeattemptinganyinspectionorperformin

TROUBLEPROBABLECAUSEREMEDYContactorpullsin.IncorrectoperatingvoltageofCR3relay.AdjustslideronR2resistorsoCR3relaypullsinonopencircuitvoltage.Weldcurre

87*203730742303946000000002TTE2245/24620720800004T12345CircuitDiagramNo.CB-900529-14CFigure6-2.CircuitDiagramFor200,300&400AmpereDCArcWeldingPowe

,00U0000187*175v4--11EMEPGENCV1~RC3*CRCR2/19M1TP-LOCATEDINICR9WELDINGMACHINEATDl~CR4ACRlO15~~0ICR5M2141215MtH7.cPLCR3~218CR62202215CR31TO2TO223A~1

81*20443141301423039460COAl0000000002TTE2TE32451246~72O8000004TCircuitDiagramNo.CB-900574-4BFigure6-4.CircuitDiagramFor200&300AmpereWideRangeLowA

44~Q~QPCI233CR5START235CR6WELDIHTc~J6236~237\~cCR8SLOPE&I238Cs8C3~8j23918z9UI9w0WUI3132234420000000IT81*3~4431301423039460COW0000000021TE21932514

CircuitDiagramNo.CB-900574-3BFigure6-6.CircuitDiagramFor200&300AmpereWideRangeLowAmpereDCArcWeldingPowerSourceWithSCM-2ASequenceControlOM-540Page1

SEQUENCEI-POErLOW-CRA2-STARTIlIAC3-WELDTIME4SLOPETIMEBALANCETERMINALBALANCETERMITIASE:~W~~:~ECONNECTED4027CONNECTIONCircuitDiagramNo.CC-901016-26CFigu

203Or223728120720837308/44720.4ErEps-LocnrED/NCONTROLRCSOPTIONALEXTAA0~&71~1~CircuitDiagramNo.CC-901O16~18CFigure6-8.CircuitDiagramFor200.300&

6~5V~1,_JLc!:;.c.~_~~_J30,38,474,24,27,2872,73,78375,78~32a1CR~~lERGESCVII~~CR2I277/M263CR12CR29I/107CR9UIL__fi-0275~210'.,cR~,CR~y-~F,26

1.0wLO275~~V.15L3~Q~tE3TE~1240~~4~1E~ERLA3S.dIYRC~.Q;~a1._f:!!!!~:I1!!:T~~~362132WE&_.~c~n44yji~~c~__20ITIME~i~\~.IiS3WELDTIMESEQUENCEWEL

ERRATASHEETAfterthismanualwasprinted,refinementsinequipmentdesignoccurred.Thissheetlistsexceptionstodataappearinglaterinthismanual.ItemDia.PartNo.List

SECTION7-CERTIFICATIONFORHIGHFREQUENCYARCWELDINGEQUIPMENTa7-1.GENERALThisfollowinginformationisnecessarytomakeaproperinstallationofthehighfrequencyar

Thisworkoutputterminaloftheequipmentshouldthenbegroundedtoagoodelectricalground(asdefinedinsectionentitledGROUNDS)withashortlengthofweldingcableo

Ifthemetallicbuildingisnotproperlygrounded,bondingtoseveralgoodelectricalgroundsplacedaroundtheperipheryofthebuildingwillgivereasonableassurancethatth

September1973FORM:OM-540MODELSCE-1ASCE-2ASCE-3ASCE-5ASCM-lASCM-2ASCM-3ASCM~5ASTOCKNO.040105040107040109040256040104040106040108040255MODEL/STOCKNO.SER

SCEQuantityItemDia.FactoryorModelNo.Mkgs.PartNo.DescriptionSCM1A2A 3A5AFigureAMainAssemblyTIMER,15second115voltacorTIMER,1minute115voltac orTIMER,3min

ItemDia.No.Mkgs.SCEQuantityorModelSCM1A~2Aj3AJ5AFigureAFactoryPartNo.DescriptionMainAssembly(Cont.)7S2*011610SWITCH,toggleSPDT(centeroff)10amp125Vspad

ItemDia.FactoryNo.Mkgs.PartNo.SCEorSCMDescriptionQuantityFigureB034820Contactor(SeeFig.APage2ItemNo.14)1033410COIL*034825KIT,contactpoints*Recommended

ItemDia.FactoryNo.Mkgs.PartNo.FigureC604005027610027614024366Timer,Interval-Electronic(SeeFig.APage1ItemNo.2)BRACKET,mounting-socketSOCKET,relay-8pinR

ItemDia.FactoryNo.Mkgs.PartNo.FigureCl034371CircuitCardAssembly(SeeFig.CPage4ItemNo.61)DescriptionQuantity76R4030691RESISTOR,carbon1watt4700ohm177R603

919293949596979899100101102103104G020623010 886601838016612038887T3033 601038891T2036323R7030724C3031 601014159Ri030603C2031602010 884Cl031605R6030602

ItemNo.FactoryPartNo.FigureDl020623SparkGapAssembly(SeeFig.0Page6ItemNo.91)DescriptionQuantity111602023SCREW,capsockethead10-24x3/44112604772WASHER,fl

CERTIFICATENAMEOFEQUIPMENT:_________________________MODELNO..SERIALNO._~________________________DATEThisequipmenthasbeentype-testedunderstandardizedfi

TABI-EOFCONTENTSParagraphNo.PageNo.SECTION1INTRODUCTION1-1.General11-2.Receiving-Handling11-3.Description11-4.Safety1SECTION2INSTALLATION2-1.Primary

SECTION1INTRODUCTION~Dimensions(Inches)Weight(PoundsHeightWidthDepthNetShipping33-1/4 26-1/410-5/8168230Figure1-1.SpecificationsThismanualhasbeenprep