Toro Reelmaster 5010-H Diagnostic Manual

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Fault 111: Internal Regulator Overvolt—M/GInfoCenter Display:_____FAULT #111_____Int. Reg. HI VFault DescriptionExcessive voltage occurred at the motor/generator’s 15 Vdc internal regulator, and disabled the motor/generator.Circuit DescriptionThe motor/generator is attached to the engine and provides power for the 48 Vdc system. It has its ownindependent controller to regulate power generation levels.Conditions for Setting the FaultThis fault can only be triggered by a failure of the internal motor/generator controller. Such a failure would allowvoltage levels beyond engineering specifications to exist in the 48 Vdc circuitry.Recommended Service ActionsStep 1: Verify that the fault repeats.1. Clear the system faults from the InfoCenter. Refer to Clearing Faults from the InfoCenter (page 21).2. Operate the machine.Pass The fault did not repeat. Go to Returning the Machine to Service (page 22) and follow the steps listed.Note: If the fault does not repeat, an isolated event has occurred.Fail The fault repeated. Go to Step 2.Step 2: Remove the motor/generator assembly from the machine.Remove the motor/generator assembly from the machine. Refer to Chapter 5 of the 5010-H Service Manual.Step 3: Remove the controller from the motor/generator.Remove the controller from the motor/generator. Refer to Chapter 5 of the 5010-H Service Manual.Step 4: Inspect the wiring between the motor/generator and thecontroller.The motor/generator and the controller each have cabling that connects to the other component. Inspect thewiring between the controller and the motor/generator.405