startup error for 12-pole BLDC motor

alevinthal · ‎2010-03-23

Posted on March 23, 2010 at 17:24

alevinthal · ‎2011-05-17

Posted on May 17, 2011 at 15:07

No. As stated in the post, it is STARTUP FAILED.

I have read App note AN1276 and the issue does appears to be in the alignment ramp and startup ramp table. How can I compute the correct parameter/table values for these functions? What other parameters must I set to get the system working?

abelmeg2 · ‎2011-05-17

Posted on May 17, 2011 at 15:07

Is the fault condition Overcurrent?

alevinthal · ‎2011-05-17

Posted on May 17, 2011 at 15:07

I received a spreadsheet from ST online support that computes a startup ramp based on PWM freq, pole pairs, and rotational speed (rpm/s). I was able to install the new table in the code and now the motor runs fine.