Toro Workman GTX Electric & Lithium Service Manual page 87

Fault Fault Title Controll
ID er(s)
Affected
P1511 Traction Motor SC2
Controller --
High Temp
Shutdown
P1512 Traction Motor SC2
Controller --
Low Temp
Shutdown
P1520 Traction Motor SC2
Speed Sensor
-- Out of
Range
P156C Traction SC2
Controller --
Internal
Hardware
Failure
P156D Traction SC2
Controller --
Internal
Software
Failure
P156E Traction Motor SC2
Software --
Hardware
Incompatibility
P1A01 Battery SC1
Charging --
High Temp
Shutdown
Workman GTX Electric Lithium
Fault Condition / Additional Notes
Circuit Description
The controller The controller
temperature was temperature
measured to be exceeds 85 ºC
greater than the (Sevcon).
temperature
NOTE: Coasting
shutdown threshold.
downhill or towing
with batteries at full
charge can cause
this fault to occur.
Traction is disabled.
The controller The controller
temperature was temperature is less
measured to be less than or equal to --20
than the temperature ºC (Sevcon).
shutdown threshold.
Traction is disabled.
Speed sensor Sensors measured
reading is outside out of range.
normal operating
Traction is disabled.
range.
A hardware Traction is disabled.
component internal
to the traction
controller has failed.
An unexpected Wrong software
software error has parameter has been
occurred. detected.
Traction is disabled.
The software is not The software will not
compatible with the operate on the
hardware. current controller
hardware.
Traction is disabled.
A battery One or more of the
temperature was batteries temp is
measured to be greater than 60 ºC.
greater than the
Battery contactor is
allowed threshold
opened.
and will not charge.
Page 3B - - 17
Service Actions
1) Reduce ground speed
2) Check for mechanical
resistance in the wheels that
would make the motors work
harder than necessary.
Warm the machine.
1) Check the wiring to the
speed sensor feedback if
available.
2) Check supply to speed
sensor if available.
3) Check ground to the speed
sensor if available.
If fault continues to occur,
replace the controller.
If fault continues, contact
Toro TAC and replace the
controller.
Replace controller.
1) Let the machine cool
before charging.
2) Charge the machine in the
shade or in a cooler
environment.
Electrical System