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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
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For maximum heat dissipation, it is recommended that the Victor SPX be securely mounted to a robot’s
metal frame – this allows the robot to be used as a giant heatsink to aid in cooling.
CAUTION: IN RARE CIRCUMSTANCES, THE VICTOR SPX MAY BECOME HOT DURING
USE. USE CAUTION AROUND ANY VICTOR SPX THAT HAS RECENTLY BEEN USED,
ESPECIALLY ONES USED FOR HIGH CURRENT APPLICATIONS. IF PROTECTED BY A
40A BREAKER, THE VICTOR SPX MAY BECOME HOT BUT WILL NOT BECOME HOT
ENOUGH TO DAMAGE ITSELF.
Strain Relief
An important yet frequently forgotten aspect of wiring is strain relief. All electrical connections should be
isolated from any pulling or tugging that may result in a poor connection. Once the Victor SPX is fully wired,
zip ties should be used to ensure that all electrical connections are protected.
Note: When zip-tying wires down, it is crucial to avoid sharp edges on the robot. Wires that are anchored to
sharp edges can become worn over time and cause a short.
Applying Power for the First Time
Before applying power for the first time, it is a good idea to double check the following:
The red wire is connected to the positive source
The black wire is connected to the source ground
All electrical connections are secure and electrically isolated
A 40A or smaller breaker is in series with the Victor SPX’s positive power input
There are no short circuits on the Victor SPX’s output
The CAN cable is correctly oriented (i.e. yellow to yellow for CAN bus & yellow to white for PWM)