Vex Robotics Victor SPX User Manual page 17

217-9191-751
Victor SPX User Guide
Indication: Flashing RED Status LEDs after calibration.
Problem: Calibration Failed.
Possible Solutions:
1. Inadequate travel in either the forward or reverse direction. Repeat the calibration procedure
and move the joystick further forward and/or further reverse.
2. The joystick trim is not centered. Neutral cannot be extremely far from center.
Indication: No power output from the speed controller although the Status LEDs work.
Problem: Possible internal damage.
Possible Solutions:
If the Status LEDs on the Victor SPX are operating properly and there is no output, the Victor SPX
may be internally damaged. This condition is typically caused by a short circuit on the output or there
has been an over-current condition that caused a failure.
Check the following:
1. Ensure the Status LEDs are changing between ORANGE, RED, and GREEN with joystick
movement.
2. Disconnect the motor and check the output (M+ to M-) with a voltmeter. The meter should
read between +/- battery voltage with corresponding full range joystick movement. If the
Status LEDs are working properly and the outputs are not working properly, the speed
controller is probably damaged. The final test to determine if the Victor SPX is damaged is to
replace it with another Victor SPX that is known to function properly.
CAUTION: PRIOR TO REPLACING A POTENTIALLY DAMAGED SPEED
CONTROLLER, ENSURE THAT THE WIRES CONNECTED TO THE OUTPUT
ARE NOT SHORTED AND THE INPUT IS NOT REVERSED. ALSO, VERIFY
THAT NEITHER OF THE VICTOR SPX'S MOTOR OUTPUT LEADS ARE
SHORTED TO THE CHASSIS OF THE MOTOR OR THE ROBOT.
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Copyright 2018, VEX Robotics Inc., Cross the Road Electronics
Updated: 2021-11-29
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