Toro Reelmaster 5010- H - Fault 29: 48 V Battery Low Voltage

Fault29:48VBatteryLowVoltage
Note:Fault29indicatesalow-voltageconditioninthe48Vdcbatterysystem,ratherthananindividual
componentsignalingalow-voltagecondition.
InfoCenterDisplay:
_____ FAULT#29 _____
48V LOV
FaultDescription
Theentire48Vdcbussystem(includingthemotor/generatorandall5cuttingreelmotors)issuppliedwith
32voltsorless.
CircuitDescription
The48Vdcbussystemprovidesacommon48Vdcsourceforthemotor/generatorandall5cuttingreelmotors.
ConditionsforSettingtheFault
Ifall6oftheindividual48VdcbusdevicessendabuslowvoltagefaulttotheTEC-5002(i.e.,faults88through
93),theTEC-5002setsfault29insteadoffaults88through93.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page21).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page22)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Withtheenginerunning,checkthe48Vdcbatterysystem.
1.Useamultimetertomeasurethevoltageacrossthe48Vdcbatterypack(Figure145).
2.Itshouldmeasurebetween46Vdcand58Vdc.
Pass
The48Vdcbatterysystemcheckwasgood.GotoReturningtheMachinetoService(page22)
andfollowthestepslisted.
Fail
The48Vdcbatterysystemcheckwasnotgood.GotoStep3.
Step3:Withtheengineshutoff,checkthe48Vdcbatterysystem.
The48Vdcbatterypackiscomposedof4sealed12VdcAGMbatteriesconnectedinseries.
1.Measurethevoltageacrossthe48Vdcbatterypack().Thereadingshouldbe46to54Vdc.
A.Ifthevoltagereadslow,removecuttingunit1andbothofthe48Vbatterycovers(Figure71).
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