Hello
I've got a persistent problem with one of my Vesc's (4.12), it seems to loose tracking at currents above 40A (motor)
If i set motor current to 35A it works fine, sort of fine around 39A and it's always a problem above 40A.. There are no fault codes or any led error-codes.
When it happens the current graph is all over the place and the erpm graph drops like a stone. The motor shakes/vibrates like crazy. Everything returns to normal if i lower the throttle input.
I've changed:
- DRV
- Fets
- Gate & pull down resistors
- MCU (fried the usb input)
- Shunt series resistors (Drv input)
This board have had it's Q6 to GND trace burned off previously and I can't remember if I got it working properly after that. That happened when I was trying to get FOC working sensorless.
I've already ordered another one but I would like to get this one working as well.
Any theories?