I have two issues
Project details:
a. Custom board.
b. MCSDK 6.2.0, FOC, 15HKz , 3 shunt topology , BLDC motor,
c. Motor pilot not configured
Issue1- I have calculated the Hall placement angle as mentioned in the documentation in one direction (clockwise). The motor smoothly starts also under loaded conditions, there are no issues. But when i try to spin in reverse direction with negative Iq under the same load it does not start.
I plotted Ia, I b using cube monitor
Motor does not start in reverse direction.
Motor runs smoothly without problem in forward direction. How do i debug the issue?
Issue2: Very much related to the above to find the root cause i have tried under no load in another setup using another motor
I have followed hall placement angle procedure in one direction (clockwise) and i was successful in running the motor in no load conditions in both directions with +Iq, -Iq. Placement angle was around 60Degress
But if i followed the same procedure to find the placement angle in anticlockwise direction, i found out from oscilloscope images, i have to swap two hall signals and the placement angle to be changed to 120degrees, I have done both but the motor does not run in either direction.
