Feedback Calibration Fault - What is it, and What causes it?

cancel
Showing results for 
Search instead for 
Did you mean: 

Feedback Calibration Fault - What is it, and What causes it?

138 Views
Senior Contributor I

Hello, 

What is the Feedback Calibration Fault, and what causes it? 

I have a system that's been running since January, I was running a motor validation yesterday - max torque for 0.5min, then 0 torque for 9.5min. After 3.5 hours I noticed my B phase current went to my full scale value of 410.7A, and my system faulted. I power cycled my system, and my MCU had the Feedback Calibration Fault. I tried another MCU, and it had the same fault. It seems something about the system is causing this fault. I replaced the system, and the fault went away. 

Labels (1)
0 Kudos
2 Replies

9 Views
Senior Contributor I

That fault indicates that there is an issue with the hardware. I usually means that the value read by the MCU when the current is zero isn't approximately at the midpoint of the ADC voltage range. 

9 Views
Senior Contributor I

Thanks Adam. That was the case as well, since the hardware was stuck at 4095. 

0 Kudos