Connecting a Alltrax motor driver


The Alltrax motor controllers do not provide isolation between the high voltage battery and the low voltage circuits.

The B- terminal is the common ground, as is the "Throttle 2" terminal.

The "Throttle 1" terminal has an internal pull up to an internal 14 V supply. When loaded with a 5 kOhm throttle pot, that voltage drops to about 3 V (full throttle) down to 0 V (stopped).

Note that the Alltrax controllers have not filtering whatsoever, so it is an exceptionally high source of noise, so you may have some difficulties with the BMS.

Schematic diagram
Wiring diagram


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Page published on: Nov 08 2019.      Installation manual