8i20

Its the init that trips it. struggling with a way to diagnose it.

Does it always trigger? Or is it OK the second time? I am wondering about transient effects as the rotor snaps in to phase.

I guess you have tried both higher and lower initvalue values?

How do you drive the input enable and read the fault out physical pins on the 8i20? Do you setup pins from the driver board?

Currently testing, I'm driving input enable from 5v off the serial connector.. not sure if that is trouble.

Figured out the tripping error. Too low impedance on the motor detects as a short apparently.
250Kv motors will never work no matter how low you try to drive it

Thanks!

Are these RC aircraft motors?

Yes I forgot to ask this, what type of motor and perhaps more important, what is the motor inductance?

The 8I20 is intended for medium/high inductance motors (standard AC 230V servo motors)