Rear Wheel Traction Motor (Optional 3Wd) - Toro Greensmaster eTriFlex 3360 Service Manual

Rear Wheel Traction Motor (Optional 3WD)

Testing the Rear Wheel Traction Motor
Greensmaster® eTriFlex 3360 and 3370
19239SL Rev B
The rear wheel traction motor is a 48 VDC, brushless, permanent magnet motor.
The rear wheel traction motor has its own on-board controller (T5). If a problem
exists with the rear wheel traction motor, a fault may have occurred that would
be indicated by a fault code on the InfoCenter Display. Before considering that
rear wheel traction motor service work is necessary, check for any existing fault
codes that indicate problems with the rear wheel traction motor; refer to
Faults (page 3–7). If the rear wheel traction motor is faulty, there will likely be
numerous fault codes that are listed by the InfoCenter display.
To operate, the rear wheel traction motor requires 48V logic power (supplied by
the logic relay) and a connection to the 48V power bus (supplied by the main
contactor when energized).
The traction motor controller is not serviceable, and is best tested by using the
information provided on the InfoCenter display as described in the following test
procedure. Refer to Appendix A (page A–1)
Note: If the rear wheel traction motor is replaced for any reason, the machine
software must be updated; contact an Authorized Toro Distributor for assistance.
The InfoCenter Display can also be used to monitor the current draw for the
traction motors during machine operation. During operation, some variance in
the traction motor current draw is expected even when driving straight.
1. Park the machine on a level surface, lower the cutting units and set the key
switch to the O position.
FF
2. Set the function control switch to the N
3. Sit in the operator seat and set the key switch on the O
4. Access the InfoCenter Diagnostics > Traction > Inputs screen.
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5. 48V system voltage should be present at the traction motor controller logic
circuit TRXN 3 Logic V and at the rear wheel traction motor power bus circuit
TRXN 3 Bus V.
• If – – – appears, the controller is not communicating on the CAN bus.
Voltage must be present at the controller logic circuit before communication
can occur on the CAN bus.
If voltage is not present at the logic circuit, the logic circuit is damaged.
The circuit wiring should be checked for corrosion or damage and
cleaned or repaired as necessary.
for circuit wiring information.
EUTRAL
Figure 59
Page 5–57 Electrical System: Testing the Electrical Components
Machine
position.
position.
N