DRV10987EVM: How do I set the correct register value ?

Kiyong SON

Intellectual 545 points

Part Number: DRV10987EVM

Dear TI-er.

How do I set the correct register value?

Kt= 111.8mv/hz (by tuning guide)

My customer set the value like below.

But, It is abnormal operating status.

Can you recommand the value ?

over 4 years ago

0 Vishnu Balaraj over 4 years ago

TI__Mastermind 24405 points

Hi Kiyong,

Thanks for posting your question in E2E forum. Looks like your motor is hitting the current limit. I see that the first order (A1) and second order (A2) acceleration rate is too low and aggressive which could cause the motor current to overshoot and hit current limit. Can you try increasing A1 and A2? Also, can you share the motor phase current waveform?

Regards,

Vishnu

0 Vishnu Balaraj over 4 years ago in reply to Vishnu Balaraj

TI__Mastermind 24405 points

Hi Kiyong,

Were you able to resolve the issue?

Regards,

Vishnu

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DRV10987EVM: How do I set the correct register value ?