Wesley BC-6200-8SA - Manual (Page 40)

34 Curtis 1268 Manual, Rev. D
step 1. Jack the vehicle wheels up off the ground so that they spin freely.
Note: Most of the throttle tuning can be done without driving
the motor, but it is advisable to check that the throttle range is
still fully active when motor currents are being produced.
step 2. Plug the 1311 programmer into the controller and turn on the
controller with the run/store switch.
step 3. Using the programmer’s Program menu, initially set the
THROTTLE MAP parameter to 50%. This will provide a lin-
ear relationship between the throttle input voltage and the
Throttle % displayed in the programmer’s Monitor menu.
step 4. Select the Monitor menu. Throttle % should be visible at the top
of the display. You will need to reference the value displayed here.
step 5. Use a voltmeter and test clip to measure the throttle input volt-
age at Pin J1-15.
step 6. Measure and note the voltage when the throttle is fully released.
step 7. If the pedal switch is wired into the mechanical throttle
mechanism, scroll down the Monitor menu to Foot Input.
The display should indicate that the pedal switch is Off.
Slowly apply throttle until the display indicates that the
pedal switch is On. Measure the throttle voltage that is be-
ing produced at this threshold, and make a note of this value.
step 8. Measure the voltage when the throttle is fully depressed, and
make a note of this value.
step 9. Return to the Program menu.
Set THROT FAULT LO lower than the fully released voltage mea-
sured in Step 6.
If the pedal switch is wired into the throttle mechanism,
set THROTTLE 0% close to the voltage measured in Step 7. (Setting
THROTTLE 0% too far below this voltage will result in loss of low-
end throttle range.) If the pedal switch is not part of the throttle
assembly, set
THROTTLE 0% above the fully released voltage measured
in Step 6.
Set THROTTLE 100% lower than the fully depressed voltage
measured in Step 8. Set the THROT FAULT HI parameter above the
fully depressed voltage (but no higher than 4.7 V).
step 10. Apply the keyswitch and forward switch and depress the throttle
slowly through the full range of motion, causing the wheels to
spin. Ensure that the Throttle % reaches 100% when the pedal is
fully depressed. Ensure that the Throttle % returns to 0% when
the throttle is released and that no throttle fault appears in the
Faults menu.
step 11. Refer to Section 3, page 20, and set the THROTTLE MAP parameter
for desired performance.
5 — TUNING GUIDE