Fault 60: Main Contactor-Closed - Toro Reelmaster 5010-H Diagnostic Manual

Fault 60: Main Contactor—Closed
InfoCenter Display:
Fault Description
The main contactor closed fault indicates a failure associated with control of the 48 Vdc contactor. The
motor/generator monitors the 48 Vdc bus in an effort to detect failures of the contactor or the contactor control
circuit. The motor/generator measures voltages on both sides of the contactor. Faults occur when the voltages
are supposed to be different, but they are the same.
Circuit Description
The main contactor exists in the 48 Vdc system to connect the 48 Vdc battery pack to the motor/generator and
cutting reel motors. The motor/generator controller determines when the main contactor is closed.
Conditions for Setting the Fault
The motor/generator monitors the 48 Vdc bus to detect failures of the contactor or the contactor control circuit.
The motor/generator measures the voltage on both sides of the contactor. Faults occur when the voltages
are supposed to be different, but they are the same.
Recommended Service Actions
Step 1: Verify that the fault repeats.
1. Clear the system faults from the InfoCenter. Refer to
2. Operate the machine.
Pass The fault did not repeat. Go to
Note:
If the fault does not repeat, an isolated event has occurred.
Fail The fault repeated. Go to Step 2.
Step 2: Check the voltage across the coil of the contactor.
1. Raise and support the operator's seat.
2. Locate the main contactor and remove the protective cover. See
_____FAULT #60_____
Contactor Closed
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 22)
214
and follow the steps listed.
Figure 124.
21).