3 — PROGRAMMABLE PARAMETERS
1212 & 1212P Manual - Sep 2019
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pg. 20
THROTTLE MENU, cont’d
PARAMETER ALLOWABLE RANGE DESCRIPTION
Calibration On/Off Wigwag and unipolar throttle pots should be centered. Setting this parameter
to On inhibits driving and puts the controller into throttle autocalibration
mode; see procedure below.
Setting the parameter Off returns the controller to normal operation.
CALIBRATION OF WIGWAG AND UNIPOLAR THROTTLE POTS
The Calibration parameter provides a means of easily and reliably centering wigwag and
unipolar throttle pots. A horn must be connected to the horn driver during the procedure. The
controller inhibits driving while in calibration mode, enabling the throttle pot to be adjusted
safely.
1. Jack the vehicle drive wheels off the ground or disconnect the motor leads.
2. Completely assemble the throttle mechanism but do not tighten the clamping mechanism
that secures the potentiometer shaft to the throttle lever.
3. Plug the programmer into the controller, and turn the keyswitch on.
4. Select the program mode and scroll down to the throttle auto calibration parameter.
5. Set the Calibration parameter On (Program » Throttle » Calibration). At this point, the horn
will probably sound, indicating that the throttle pot is out of adjustment. If the horn does
not sound, the pot is already centered and no further adjustment is necessary.
6. With the throttle lever at the neutral position, adjust the potentiometer in one direction
until the horn turns off. Note this position. Adjust the pot in the other direction until the
horn turns off. Note this position. Set the pot halfway between the two noted positions.
The pot is now adjusted to the proper value for neutral.
7. Tighten the clamping mechanism that secures the throttle lever to the potentiometer
shaft. Depress and release the throttle to verify the mechanical return to neutral; the horn
should turn off with the same amount of motion in both directions.
8. Set the calibration parameter Off, or cycle the keyswitch to reset it to Off. (If you are
performing the reset by cycling the keyswitch, note that KSI must remain off for at least 4
seconds.) The vehicle will not drive if the throttle autocalibration parameter is left On.
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