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BLDC Motor Not Rotating in Sensorless Mode (Shows Running State in Motor Pilot)

Bablu
Associate II

Hello,

I am working with a BLDC motor in sensorless mode using ST Motor Control Workbench and Motor Pilot.
When I press the Start button in Motor Pilot, the motor status changes to Running based on the target speed I set, but the motor shaft/wings do not actually rotate.

Additional observations:

  • The motor is not in a locked condition (not drawing stall current).

  • If I try to manually rotate the motor during startup, it still does not continue spinning.

  • On Motor Pilot, the motor state shows Running, but physically it is stationary.

My Questions:

  1. Why does the motor state show Running while the rotor is not moving?

  2. How can I debug this issue further to ensure proper startup in sensorless mode?

Any guidance or suggestions will be greatly appreciated.

 

Thank you

Best Regards

Rahul

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