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DRV10983: getting stopped in open loop

Part Number: DRV10983

Hello Guys,

Good day.

Our customer is working on a BLDC ceiling fan using DRV10983. However, the fan is getting stopped in open loop.

Initially, they were able to drive the blades at an angle of 8.4deg. After incrementing the blade angle by 0.5deg, lock-1 is getting on and restarting the motor at aprrox 270-280rpm. Below are their configurations.

Also, Is it possible for them to specify frequency as 42Hz ? If yes, how?

Thanks and regards,