Fault 30: 48V Bus High Voltage - Toro Reelmaster 5010-H Diagnostic Manual

Fault 30: 48V Bus High Voltage

InfoCenter Display:
Fault Description
The 48 Vdc system (motor/generator and all 5 cutting reel motors) is reading 67.5 Vdc or higher. All 6
individual 48 Vdc Bus Overvolt faults (faults 94 though 99) were active at the same time. This is indicative of a
motor/generator issue (e.g., charging system failure, wrong type or voltage rating of batteries installed, etc.)
Compare this to an individual overvoltage fault, which is indicative of a voltage regulator issue.
Circuit Description
The Reelmaster 5010-H 48 Vdc system includes a 48 Vdc battery array (4 12-Vdc AGM batteries in series),
an engine-driven motor/generator assembly, 5 cutting reel motors, a main contactor used to energize the
system, and additional circuit control components.
Conditions for Setting the Fault
The TEC-5002 detects all 6 individual 48 Vdc bus overvolt faults are active at the same time. The overvoltage
threshold point is 67.5 Vdc.
Note:
This fault can occur if the TEC-5002 loses communication with the M/G and the engine is set to
maximum rpm. In this mode, the operator loses control of the engine speed. The M/G communication issue
must be resolved before attempting to fix the overvoltage issue.
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: With the engine shut off, check the 48 Vdc battery system.
The 48 Vdc battery pack is composed of 4 sealed 12 Vdc AGM batteries connected in series.
1. Raise and support the operator's seat, then remove the cover from the main contactor. See
_____FAULT #30_____
48V HI
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 22)
104
V
and follow the steps listed.
21).
Figure 72.