Toro Workman GTX Electric & Lithium Service Manual page 85

Fault Fault Title Controll
ID er(s)
Affected
P0A3C Traction Motor SC2
Controller --
High Temp
Warning
P0A44 Traction Motor SC2
Speed -- High
P0A54 Traction SC2
Controller --
Over Current
P0A80 Battery -- SC1
Internal
Hardware
Failure
P0AA1 Battery SC1
Contactor --
Stuck Closed
P0AA2 Battery SC1
Contactor --
Stuck Open
Workman GTX Electric Lithium
Fault Condition / Additional Notes
Circuit Description
The measured FET FET temperature
temperature exceeds 75 ºC
exceeds the design (Sevcon).
limit. When the
Traction
overtemp region is
performance is
entered, motor
limited.
current is limited on
a linear basis until
the absolute over
temp value is
reached.
Machine is operating Ground speed is
above the allowed above the
max speed which programmed max
should not be speed of the
possible. machine.
Traction is disabled.
The motor was Current draw from
commanding more motors exceeds
current than the hardware and
hardware and software limits.
software allows.
Traction is disabled.
A hardware Battery contactor is
component internal opened.
to a battery has
failed.
The contactor is Current draw
measured to be detected from the
closed when it BMS when there
should be open. shouldn't be.
Battery contactor is
open.
NOTE: If it's truly
welded shut, it won't
open.
The contactor is 20% difference in
measured to be voltage between the
open when it should two sides of the
be closed. battery contactor.
Battery contactor is
opened.
Page 3B - - 15
Service Actions
1) Reduce ground speed.
2) Check for mechanical
resistance in the wheels that
would make the motors work
harder than necessary.
1) Check the wiring of the
speed sensors.
2) Check the supply voltage
to the speed sensor.
1) Cycle the key switch.
2) Report incident to Toro
TAC if fault continues. This
should not occur under the
desired machine design.
One or more of the batteries
is likely damaged. Contact an
Authorized Toro Distributor
for assistance.
The BMS is likely damaged.
Contact an Authorized Toro
Distributor for assistance.
The BMS is likely damaged.
Contact an Authorized Toro
Distributor for assistance.
Electrical System