Operator's Manual

AeratorControlModule
(ACM)
TheAeratorControlModuleisapottedelectronic
deviceproducedina1-size-ts-allconguration.The
moduleusessolid-stateandmechanicalcomponents
tomonitorandcontrolelectricalfeaturesrequiredfor
safeproductoperation.
g010053
Figure52
1.Aeratorcontrolmodule
Themodulemonitorsinputsincludingheadlow,head
high,transport,aerate,andgroundfollowing.The
moduleisdividedintoinputsandoutputs.Inputs
andoutputsareidentiedbygreenLEDindicators
mountedontheprintedcircuitboard.Poweris
identiedbyaredLEDindicator.
Thestartcircuitinputisenergizedby12VDC.All
otherinputsareenergizedwhenthecircuitisclosed
toground.EachinputhasanLEDthatilluminates
whenthespeciccircuitisenergized.Usetheinput
LEDsforswitchandinputcircuittroubleshooting.
Outputcircuitsareenergizedbyanappropriatesetof
inputconditions.The3outputsincludeSVL,SVR,
andSVQ.OutputLEDsmonitorrelayconditions
indicatingthepresenceofvoltageat1of3specic
outputterminals.
Outputcircuitsdonotdetermineoutputdevice
integrity,soelectricaltroubleshootingincludesoutput
LEDinspectionandconventionaldeviceandwire
harnessintegritytesting.Measuretheimpedanceof
disconnectedcomponents,theimpedancethrough
thewireharness(disconnectedattheACM),orby
temporarilytestenergizingthespeciccomponent.
TheACMdoesnotconnecttoanexternalcomputer
orhandhelddevice,cannotbereprogrammed,and
doesnotrecordintermittentfaulttroubleshootingdata.
ThedecalontheACMincludesonlysymbols.The
3LEDoutputsymbolsareshownintheoutputbox.
AllotherLEDsareinputs.Thechartbelowidenties
thesymbols.
decal106-8835
Figure53
1.On/off
7.Headlow
2.Output
8.Headhigh
3.Solenoidvalvelower9.Transport(1)
4.Solenoidvalveraise10.Aerate(4)
5.Solenoidvalvequick11.Groundfollowing
6.Input
12.OKtolower
Thefollowingarelogicaltroubleshootingstepsforthe
ACMdevice:
1.Determinetheoutputfaultyouaretryingto
resolve.
2.MovethekeyswitchtotheONpositionand
ensurethattheredpowerLEDilluminates.
3.MoveallinputswitchestoensurethatallLEDs
changestate.
4.Positioninputdevicesattheappropriateposition
toachievetheappropriateoutput.
5.IfspecicoutputLEDilluminateswithout
appropriateoutputfunction,checkoutput
harness,connections,andcomponent.Repair
asrequired.
6.IfspecicoutputLEDdoesnotilluminate,check
bothfuses.
7.IfspecicoutputLEDdoesnotilluminateand
inputsareinappropriatecondition,installnew
ACManddetermineifafaultdisappears.
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