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Original question:

DRV8462EVM: GUI version

DRV8462EVM: DRV8462EVM: GUI version

Enhui Yang
Intellectual 2400 points
Part Number: DRV8462EVM

Hi Team,

We use MD041E1, but cannot connect the 0.1.0 GUI software to the EVM.

We want to use 1.0.0 GUI to have a try and where to download the 1.0.0 GUI software?

Thanks for your feedback.

  • 0
    TI__Guru 55615 points

    Hello,

    1.0.1 is the latest version and available for download or can use the cloud option.  Scroll down on this page.

    https://www.ti.com/tool/DRV8462EVM

    Regards,

    Ryan

  • 0 in reply to Ryan Kehr
    Prodigy 20 points

    Hi Team,

    1.0.1 is the version we use. There are two problems: 1. After using the silent mode, the silent mode cannot be disabled to return to the ordinary mode, and the motor in the disabled silent mode is powered off;  2. After the motor acceleration is switched from silent mode to ordinary attenuation mode, the motor speed can not get up, generally to more than 300 revolutions per minute will be stuck. You don't have this problem by using the normal attenuation mode directly.

    Thanks for your feedback.

  • 0 in reply to zhipeng zhang
    TI__Guru 55615 points

    Hello,

    Our expert on this device is out of the office.  I will have him check operation as you described it when he returns.  It will be 2 weeks.

    Regards,

    Ryan

  • 0 in reply to Ryan Kehr
    TI__Intellectual 2400 points

    Hi Ryan,

    Hope everything is good to you.

    I would like to cycle back for this, do you have any update?

  • 0 in reply to Enhui Yang
    TI__Guru 55615 points

    Hello,

    We won't be able to look at this until next week.  I can update next week around this time.

    Regards,

    Ryan

  • 0 in reply to zhipeng zhang
    Prodigy 20 points

    I have found the cause of the second problem. The reason is that the current I set is too low. When I set the current to the rated current of the motor, the motor can run. But now there are two new problems:

    1. Under the premise that other working conditions remain unchanged, the torque of the motor in silent mode and the torque after switching from silent mode to intelligent ripple control mode are much smaller than that directly using intelligent ripple control mode. Is this normal?

    2. When the motor is switched from silent mode to intelligent ripple control mode, when the speed is accelerating and decelerating at 1200rpm and 1300rpm, the motor has abnormal sound, and the phase current waveform of the motor has obvious distortion, which is very easy to get stuck. Is this normal?

  • 0 in reply to zhipeng zhang
    TI__Mastermind 44835 points

    Hi,

    Thank you for your update. Please expect our response in next week.

    regards

    Shinya Morita

  • 0 in reply to Shinya Morita
    TI__Mastermind 44685 points

    Hi Zhipeng,

    Sorry about the delayed response for your last post.

    1. If the current amplitude changes to a lower full-scale value in Silent mode it means the tuning for this mode is incorrect. Observing the current waveform while in Silent mode modify the values of KP and KI. First start with KP increment it by 1 until the microstepping waveform looks smooth sine wave. Then fine tune by incrementing KI if needed. When the tuning parameters are correct the full-scale current amplitude in both Silent mode and Smart Tune Ripple Control mode will be identical. 

    2. We recommend to enable Auto microstepping with 1/256 RES AUTO mode prior to enabling Silent mode.

    Let us know if further questions.

    Regards, Murugavel