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    Dynamic settings / dampen vibrations

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    • RomeoFoxundefined
      RomeoFox
      last edited by RomeoFox

      I'm trying to motivate my new Voron 2.4 350x350 to produce consistent print results. Unfortunately, I am struggling with massive oscillations exactly between 35 and 90 mm/sec. The trigger seems to be the excitation of the toothed belt (GT2) on the X-axis.
      Here my setup for the dynamic part:

      M566 X1500 Y1500 Z100 E2000 P1 ; set maximum instantaneous speed changes (mm/min)
      M203 X60000 Y60000 Z6000 E4000 ; set maximum speeds (mm/min)
      M201 X5000 Y5000 Z1500 E4000 ; set accelerations (mm/s^2)
      M593 p "zvd" F15 ; input shaping 
      M572 D0 S0.03 ; pressure advance
      

      Are there any other controls in the software that I have overlooked?

      Gixxerfastundefined 1 Reply Last reply Reply Quote 0
      • rjenkinsgbundefined
        rjenkinsgb
        last edited by

        Try halving both the instantaneous speed change and acceleration values?

        They both seem rather high.

        Robert J.

        Printers: Overlord pro, Kossel XL+ with Duet 6HC and "Frankentron", TronXY X5SA Pro converted to E3D toolchange with Duet 6HC and 1LC toolboards.

        1 Reply Last reply Reply Quote 1
        • Gixxerfastundefined
          Gixxerfast @RomeoFox
          last edited by Gixxerfast

          @romeofox FWIW, I have never seen a Voron 2.4 with a ZVD (resonance) frequency of 15Hz.

          It's pretty normal around early 60 Hz X and about late 40 Y unless something is loose.

          Voron V2.4 (#1317) with Duet 3 Mini5+ Wifi and 1LC v1.1 Toolboard
          Voron V0.1 (#637) with Duet 3 Mini 5+ Wifi and 1LC v1.2 Toolboard
          Ender 3 Pro with BTT SKR-2 + RRF

          1 Reply Last reply Reply Quote 1
          • RomeoFoxundefined
            RomeoFox
            last edited by

            Thank you for the tips.

            I was finally able to locate the problem after days. It seems to be related to the "Cutting corners" function of the "SuperSlicer". I deactivated it and now the oscillations are back where they should be: approx. 46 Hz.
            But now all screws are really, really tight 🙄

            Now the

            M593 p "zvd" F46 ; input shaping
            

            is sufficient again.

            I also lowered the instantaneous speed change and acceleration values a bit. Here is still missing some fine tuning.

            1 Reply Last reply Reply Quote 0
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