Toro Reelmaster 5010- H - Fault 89: 48 V Bus Undervolt-CRM 2

Fault89:48VBusUndervolt—CRM2
Note:Whenanyindividualcuttingreelmotorisshutoffduetoafault,theTEC-5002shutsofftheother4
cuttingreelmotors.
Note:Ifmultiplemachinefaultsarereportedwithinafewseconds,troubleshootingshouldbeginwiththe
rstcuttingreelmotortoreportafault.
Note:All48Vdcdevicesareconnectedtothesame48Vdcbus.Ifthisisasystemissue,theTEC-5002
combinesall6ofthe48VdcBusUndervoltfaults(faults88though93)andreportsafault29(48VBattery
LowVoltage).
InfoCenterDisplay:
_____ FAULT#89 _____
48VBusLOV 2
FaultDescription
Thecuttingreelmotorreportsthatthe48Vdcbusvoltageismeasuredatlessthan32Vdc.
CircuitDescription
Eachcuttingunithasanelectriccuttingreelmotorthatcontainsaninternalcontroller.Theinternalcontroller
measures48Vdclogicpower,andtheelectriccuttingreelmotormeasures48Vdcbuspower.
•Ifonly1cuttingreelmotorisreportinga48Vdcbusundervoltfault,theproblemismorelikelytobewith
theeReelmotorfuseforthatcuttingreelmotor,orwiththe2-pinwireharnessconnectorforthatcutting
reelmotor.
•Ifmorethan1cuttingreelmotorisreportinga48Vdcbusundervoltfault,theproblemismorelikelytobe
withthe48Vdcsystem.
ConditionsforSettingtheFault
Thecuttingreelmotormeasuresthevoltageonthe48Vdcbusislessthan32Vdc.
Note:TheTEC-5002ltersthisfaultandreportsitonlywhenthemotor/generatorcontactorisclosed.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page21).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page22)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Testthe48Vdcsystemfuseforcuttingreelmotor2.
1.GotoPreparingforTroubleshootingand/orT esting(page22)andfollowthestepslisted.
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