Fault 99: 48 V Key Switch Overvolt - Reel Motor 2 - Toro Greensmaster TriFlex 3300 Manual

Fault 99: 48 V Key Switch Overvolt – Reel
Motor 2
InfoCenter Display:
Important:
For this fault, the term "key switch" refers to the 48 V logic power circuit, not to the
ignition switch.
Fault Description
Cutting reel motor 2 has detected that the 48 V logic voltage has exceeded the high voltage limit of 67.5 V. This
fault causes the cutting reel motor to be disabled.
Note:
All 48 V devices are connected to the same 48 V bus. If this is a system issue, the TEC combines all
48 V Key Switch Overvolt faults into a single fault.
Circuit Description
All 3 cutting reel motors share the 48 V logic power with the starter/generator.
Note:
This fault can also occur if the TEC loses communication with the motor/generator.
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: Determine the troubleshooting strategy.
If only 1 cutting reel motor is reporting a 48 V Key Switch Overvolt fault, the problem is more likely to be with the
48 V logic power connection to that cutting reel motor. Go to Step 3.
If more than 1 cutting reel motor is reporting a 48 V Key Switch Overvolt fault, the problem is more likely to be
with the 48 V system voltage. Perform the Recommended Service Actions for fault 46.
Step 3: Inspect the wiring for cutting unit 2.
1. Go to Preparing for Troubleshooting and/or Testing (page 20)
2. Disconnect the cutting units from the 48 V power system by separating the cutting unit power connectors.
This prevents unexpected operation of cutting units. Refer to
V Power to the Cutting Reel Motors (page
_____FAULT #99____
2 - 48 V
KEYSWITCH OVER V
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 21)
18).
246
and follow the steps listed.
and follow the steps listed.
Connecting and Disconnecting the 48
19).