Fault 127: Invalid Hall State-Crm 4 - Toro Reelmaster 5010-H Diagnostic Manual

Fault 127: Invalid Hall State—CRM 4
InfoCenter Display:
Fault Description
The invalid Hall state fault indicates that the Hall effect sensors in the cutting reel motor are providing an
invalid motor speed reading. When a sensor fails, the cutting reel motor cannot maintain steady speed and
becomes unstable.
Circuit Description
Each cutting reel motor is equipped with a series of 3 identical Hall effect sensors to monitor motor speed.
These are integral to the cutting reel motor and cannot be serviced.
Conditions for Setting the Fault
If all 3 of the Hall effect sensors provide the same signal, an invalid Hall state is indicated and the fault is
reported. No controller action is taken.
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: Swap cutting reel motors between cutting units.
All of the cutting reel motors are identical.
1. Go to Preparing for Troubleshooting and/or Testing (page 22)
2. Unplug the 48 Vdc battery disconnect to prevent unexpected cutting unit operation. Refer to
and Disconnecting the 48 Vdc Battery System (page
3. Swap cutting reel motor 4 with a cutting reel motor from a different cutting unit. You can obtain more
information on replacing the cutting reel motor in Chapter 5 of the 5010-H Service Manual.
4. Plug in the 48 Vdc battery disconnect. Refer to
(page 19).
5. Operate the machine.
_____FAULT #127_____
Hall State
BAD
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 22)
19).
Connecting and Disconnecting the 48 Vdc Battery System
439
4
and follow the steps listed.
and follow the steps listed.
21).
Connecting