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Spindle speed with VFD?

Discussion in 'Controller Boards' started by LARRY RADCLIFFE, Jun 17, 2020.

  1. LARRY RADCLIFFE

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    Not really sure if I should be posting this in the control software section but my question I can't remember prior to which update on the Black box it was but I'm using vetrix expire software when I set the spindle speed previously it would carry over into the initial carving of the piece when it started now the spindle stays at 12,000 RPMs and will not increase unless I manually increase it. Prior when I save the toolpaths it would ramp up to 16 thousand RPMs or 18000 RPMs or wherever I needed it to be based off the toolpaths that I saved an openbuilds?
    Any ideas would that be in the gcode?
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  3. LARRY RADCLIFFE

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    I haven't changed anything in the machine it was after the last update that it would not change the speed of the spindle. Prior to this update the it would ramp up to the designated speed I set in aspire.
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Which update? Control only sends the gcode you give it. So I'll assume a Vectric update.

    Do you have a file from before and one from after the update to compare
     
  5. LARRY RADCLIFFE

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    Peter maybe I mispoke, but here is the gcode for my machine that is written prior to every job and I think I see where the lies the M3 command is set to S12000.
    Is there way to have the machine start up and ramp up to the designated speed that I set in aspire?

    "T1"
    "G17"
    "G21"
    "G90"
    "G0[ZH]"
    "G0[XH][YH][ S]"
    "M3 S12000"
    "M8"
    "G4P03"
     
    #5 LARRY RADCLIFFE, Jun 18, 2020
    Last edited by a moderator: Jun 18, 2020
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Is that from our Post (compare to OpenBuilds/OpenBuilds-Vectric-Postprocessor it looks different) - maybe you are using a different post now than before?

    S value for the job should come from the RPM set for the tool used in the toolpath:
     

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    #6 Peter Van Der Walt, Jun 18, 2020
    Last edited: Jun 18, 2020
  7. LARRY RADCLIFFE

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    Peter THANK YOU! There were some values that needed to be changed that link explained everything! Thanks AGAIN!!
     
    Peter Van Der Walt likes this.

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