Hello, I have LV Multi axis + PfcKit, follow the guide for Sensorless FOC control.
Motor starts ok, I can set speed ok. Motor runs without load. The current PU value is very low, about <0.05. It is normal.
I tested it a number of time, without any load. But this time after set speedref (pu) to 0.6, then down to 0 to stop it, it stop but then the light LD1 of DC Bus blinks.
After checking, I found that DCBus to GND was shorted. I think the DRV8402 has broken.
How can it break so easily? Did I do something wrong that makes it break?