Toro Greensmaster TriFlex 3400 - Fault 45: 48 Volt Bus - Overvoltage

Fault45:48VoltBus–Overvoltage
InfoCenterDisplay:
____FAULT#45____
48VSYSTEM
POWERBUSOVERV
FaultDescription
Thisfaultisreportedwhenallfourindividual48VBuscomponentovervoltfaults(starter/generator,cuttingunit
1,cuttingunit2,andcuttingunit3)areactiveatthesametime.
CircuitDescription
Allfour48Vdevicesarereportingabusovervoltagefault.Theelectriccuttingreelmotorsreportthisfaultat
67.5V,andtheS/Greportsthisfaultat65V.Thebusvoltagemustbeabove67.5Vforthisfaulttoreport.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Testthebatteryvoltage.
RefertoChapter6oftheGreensmasterTriFlex3320/3420ServiceManualandfollowtheBatteryPackService
proceduretotestthebatteries.
Pass
Thebatteriesallpassedthevoltageandloadtest.GotoStep3.
Fail
Someorallofthebatteriesdidnotpassthevoltageandloadtest.Replaceallofthebatteries.Goto
ReturningtheMachinetoService(page21)andfollowthestepslisted.
Step3:Testthegeneratorassemblyforproperfunction.
1.Startthemachine.
2.UsingtheInfoCenter,monitorthe48Vsystemvoltage.
3.Generatorvoltageshouldmaintainmorethan32V.
Pass
Thegeneratorpassedthefunctiontest.GotoStep8.
Fail
Thegeneratorcouldnotmaintainmorethan32Vforasustainedperiodandfailedthefunction
test.GotoStep4.
142