Hi and
to the forum.
Back in 2014, I noticed that as the cruise control function only worked in the forward direction
(cruise could not be engaged while the motor was running in reverse after connecting the blue and black wires together).I realised this could be a problem where two motors had to run continually in opposite directions, as in a car or trike etc.
The obvious solution was to reverse the direction of one of the motors by swapping two of the Phase and Hall wires.
I was not sure if this would still work with the newer vector controllers, so I contacted GM to find out:
Is it still possible to reverse the direction of the motor by swapping phase wires and hall sensor wires around so that the cruise control can still be used, or would this technique not work properly with the MP4 and SP4 vector controllers?
Yes, you can swap phase wires to reverse the motor but only one direction can have cruise function.
On the Magic Pie 5, the
Blue and
Yellow Phase wires
and the
Green and
Yellow Hall sensor wires need to be swapped to reverse the motor's default direction.
Please check out
this thread on Endless-Sphere for more information if you find it doesn't work as expected.
If the correct wires are swapped, it should allow the cruise function
(and the regenerative braking) to operate on both motors while travelling in the forward direction, and it should also allow both motors to be reversed by simply connecting both pairs of Black and Blue wires together simultaneously using a single switch if the reverse function is required.
Please let us know if it was successful at the first attempt, or whether a slightly different sequence of Hall sensor wires was required.
AlanEDIT: Phase wire colours updated.
