So does this mean that the BLDC module doesn't output commutation before/during the startup indexing procedure? If commutation outputs are suppressed before index pulse is found I may have a problem. I was thinking that it could output them, even if they were off by a little, and hopefully it wouldn't jostle the motor around too much.
I think you are suggesting that you could supply "fake" commutation signals from LinuxCNC to the drive, and that might be enough to persuade the drive to start working?
That might actually work.
If the motor has little enough load on it at startup to magnetically align so that the "fake" commutation becomes true, just long enough for the drive to see the encoder index, then start running off that, you might be able to get things working.
I suppose it's worth a try, it's an hour's work and 3 wires.
