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Victor SPX User Guide
vexpro.com ctr-electronics.com
Copyright 2018, VEX Robotics Inc., Cross the Road Electronics
Updated: 2021-11-29
16
Troubleshooting
Indication: No ORANGE Status LEDs on power up.
Problem: Input power issue or joystick trim tab off center.
Possible Solutions:
1.
Disconnect CAN cable(s).
2.
If Status LEDs remains off, check +V or GND connections for voltage and proper polarity.
3.
If Status LEDs blink ORANGE, the speed controller is probably damaged. The final test to
determine if the Victor SPX is damaged to 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.
Indication: Flashing ORANGE Status LEDs on power up.
Problem: No CAN/PWM signal.
Possible Solutions:
1.
Ensure the transmitter and receiver are powered ON.
2.
The CAN/PWM cable may be improperly connected. Check wire color-coding at each end. Check
that the connector is not offset by a pin at the receiver end.
3.
If using PWM, check for a good PWM signal by connecting a known good servo to the PWM
cable. If the servo does not move, this can indicate either:
a.
A faulty microcontroller
b.
An improperly connected cable
c.
A bad PWM cable
Note:
The servo requires that voltage be present on the center pin of the PWM cable. This
connection is not required for the Victor SPX.