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TMS320F2800157: 48V Encoder motor some times running uncontrolled maximum speed - Alignment issues

Part Number: TMS320F2800157


Tool/software:

Hello Team,

F2800157 integrated with UMC code(latest SDK_2.0.0) and gate driver specific not specific to TI tested with 48V(ABI-encoder). when try to run the motor

most the time its successful able to achieve various speed and able to control the motor at various speed.when occasionally motor runs at uncontrollable 

maximum speed .Its clearly shows issues in motor alignment and encoder offset creating issues.

In order to avoid offset calibration ,increased Idq current at the alignment state like below .Still issues occurring rarely

1)how to fix the alignment issues with encoder index offset calibration  ?

Thank you

Regards

Prabhakaran.CP