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How can I set a constant spindle rpm ?

Discussion in 'CNC Mills/Routers' started by Tracktor, Nov 9, 2020.

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  1. Tracktor

    Tracktor New
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    Hi everybody.
    I'm a beginner in G-code. I'm working on a Workbee 1010 with 1.5kw spindle. And I have a problem :
    My first try on the machine is with the Hello World example.
    It's set with a speed of spindle : M3 S1000 (G-Code) that's working.
    but just after, the speed of the spindle decrease and I can see the spindle rotate very slowly during the next code lines.
    Have you a solution to keep the rpm ?
    Regards,
    Jeremy.
     
    #1 Tracktor, Nov 9, 2020
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    You need to set your Grbl params to match the actual spindle Max: See gnea/grbl

    For example if your spindle tops out at 24000rpm, set $30=24000
    Then if you want 10000rpm, you send M3 S10000

    And then you can fine-tune your 0-10v if its a little off still: See docs:blackbox:connect-vfd [OpenBuilds Documentation]
     
    #2 Peter Van Der Walt, Nov 9, 2020
    Tracktor likes this.
  3. Tracktor

    Tracktor New
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    I understand.
    Thanks a lot , I will try tomorow.
    Regards,
    Jeremy.
     
    #3 Tracktor, Nov 9, 2020

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