7 — TROUBLESHOOTING
Curtis 1232E/34E/36E/38E/39E & 1232SE/34SE/36SE/38SE Manual, os 31 – May 2017
pg. 18
7 — TROUBLESHOOTING
With Dual Drive systems there are two traction controllers, and when faults occur they usually affect both
of the controllers.
The Dual Drive Troubleshooting Chart (Table 2) is written from the perspective of the controller that is
issuing the fault. The effects on the other controller are shown as well.
DUAL DRIVE LIMITED OPERATING STRATEGY
When the Dual Drive Limited Operating Strategy (LOSDual) is initiated, the controller’s motor(s)-speed
will be clamped to the parameter LOS Max Speed setting (VCL parameter name
Dual_LOS_Max_Speed
),
see
. Then, if the Throttle Command (see the Monitor»Inputs menu in the controller's manual,
and 1313/1314) results in the motor-speed request exceeding the LOS Max Speed, the motor rpm will be
clamped to the LOS Max Speed, subject to normal slewing constraints.
If the steer angle input is invalid, both controllers will use the Dual Drive's LOS Max Speed and assume that
the steer angle is 0 degrees (also see the Monitor»Inputs menu in the controller's manual, and 1313/1314).
If the motor encoder is invalid on only one side (i.e., master or slave controller), that controller will have
its bridge disabled, and the other controller will use the LOS Max Speed and assume that the steer angle is
0 degrees. If both encoder signals are invalid, the vehicle will not drive. (see Codes 36 and 73 in Table 2).
