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DRV10983: Motor Overcurrent Fault at moderately high speed

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Part Number: DRV10983

Hello,

I'm using the DRV10983 and every once in a while I'm getting an over current shutdown fault that only occurs when the motor is ran for the first time of the day.

It ramps up to 29,500 RPM, everything seems OK,and after a couple minutes of running it will stop commutation and report a 4 Amp over current shutdown condition.

Im using a MAXON EC-13 448826 running at 13V (Half of what its nominal voltage is).

Kt = 23.8mV/Hz (goes up to 25.6mv/Hz after the motor has ran for a while)

Rp=1.3ohms (goes up to 1.4ohms after the motor has ran for a while)

Should I adjust the motor parameters for operation at temp?

Screen shots of the Motor GUI:

And one of the motor phases:


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