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Original question:

DRV10983: DRV10983

DRV10983: DRV10983

ahmed maarouf
Prodigy 40 points
Part Number: DRV10983

Hi Cole,

I am now trying to rotate ceiling fan with DRV10983 but the parameters differs with and without blades, and actually what happened was :

If there was no blades I measure Rm and Kt then enter all parameters then switch on and successfully motor spin.

If there was blades I measure Rm, Kt then enter all parameters but when power on this time motor rotate not complete cycle then stop.

So, if there is another parameters to be configured like Rm and Kt like Tcontrol how can I measure it or how can I calculate it?

If there is another settings for ceiling fan that I don't recognize it, please advice. 

Register readings:

Register Value
(0x10) Status Register 0X0F
(0X11) Motor Speed 1 Register 0x3F
(0x12) Motor Speed 2 Register 0x00
(0x13) Motor Period 1 Register 0x00
(0x14) Motor Period 2 Register 0x00
(0x15) Motor Kt 1 Register 0x00
(0x16) Motor Kt 2 Register 0x00
(0x21) Motor Param 2 Register 0x21
(0x1A) Supply voltage Register 0xC4 = 22 Volt
(0x1B) SpeedCmd Register 0x3B
(0x1C) SpeedCmdBuffer Register 0x83
(0x1E) FaultCode Register 0x00

These params I read it and I noticed red color registers with zero values.

I hope if you can support and advice.

thanks.

Ahmed.

--

  • 0
    TI__Intellectual 2600 points

    Ahmed,

    I'm not sure how big your load is, but here are a couple of suggestions:

    • Reduce the first order accelerate value (currently set at 19 Hz/s). Try with one of the lower/lowest settings and see if the motor spins up with load.
    • Increase the Hand off frequency (currently set at 25.6Hz). Maybe 38 or 51.
    • Disable the closed loop and see if the motor will just spin correctly at the hand off frequency.
    • Increase the software current limit (currently 0.4A).
    • Increase the open loop current limit (currently 0.4A).
    • Increase the align time (currently 0.67 sec) it will take more time to properly align with a bigger load.

    Thanks,

    Brian