Fault 46: 48 Volt Keyswitch - Overvoltage - Toro Greensmaster TriFlex 3300 Manual

Fault 46: 48 Volt Keyswitch – Overvoltage
InfoCenter Display:
Important:
For this fault, the term "key switch" refers to the 48 V logic power circuit, not to the ignition
key switch.
Fault Description
This fault is reported when all 4 of the 48 V devices (the starter/generator and each of the 3 electric cutting
reel motors) are reporting an overvoltage fault. The electric cutting reels submit this fault at 67.5 V and the SG
reports this fault at 65 V. As a result, the bus voltage must be above 67.5 V for the fault to occur
Note:
If this fault is active, the PTO is disabled and the generator will remain offline.
Circuit Description
The cutting reels run on 48 V power. The primary TEC controller monitors voltage in the system, while each
cutting unit monitors its own power using an internal controller. This fault means the entire 48V system is
reporting high voltage.
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: Test the battery voltage.
Refer to Chapter 6 of the Greensmaster TriFlex 3320/3420 Service Manual and follow the Battery Pack Service
procedure to test the batteries.
Pass Each of the 4 batteries all passed the voltage and load test. Go to Step 3.
Fail Some or all of the batteries did not pass the voltage and load test. Replace all 4 of the batteries. Go
to Returning the Machine to Service (page 21)
Step 3: Inspect the battery terminal connections.
1. Carefully inspect all of the battery connections for evidence of damage or corrosion.
2. Inspect the condition of all the battery cables for evidence of damage or corrosion.
____FAULT #46____
48 V KEYSWITCH
OVER V SYSTEM
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 21)
and follow the steps listed.
144
19).
and follow the steps listed.