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    M203 Feed Rate cannot exceed 3000 mm/min

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    • Dougal1957undefined
      Dougal1957
      last edited by Dougal1957

      this is what I have set in my Config and it all works I use 0.9 degree motors on my X,Y and Z.

      It is preferable to have the M92 before the M350 and set all the steps/mm as if they where at 1/16 that way the firmware will calculate any changes in the micro stepping automatically.

      a6fbbbf4-5fd6-4d6c-835d-8080f836c591-image.png

      Hope this helps you a bit

      Your motor currents are a bit high as well they are above the maximum the firmware will allow

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      • Eplovundefined
        Eplov
        last edited by

        My M566 values are set that low for now, just to be sure that i don't get any vibrations throughout the structure while printing. This is also why i'm running fairly low accelerations.

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        • dc42undefined
          dc42 administrators
          last edited by

          The speed can also be limited by M204, so send M204 without parameters to see what those limits are. The default is 10000 but some slicers put M204 commands in the GCode files they generate.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • Eplovundefined
            Eplov
            last edited by

            My M204 is default at 10000

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            • JamesMundefined
              JamesM
              last edited by

              What about the motor currents you set? I believe the max allowed if this is a duet 2 is 2400 yet I see your x, y and z set at 3000.

              M906 X3000.00 Y3000.00 Z3000.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent

              I wonder if that is causing an issue

              Phaedruxundefined 1 Reply Last reply Reply Quote 0
              • Phaedruxundefined
                Phaedrux Moderator @Eplov
                last edited by

                @Eplov said in M203 Feed Rate cannot exceed 3000 mm/min:

                M566 X60.00 Y60.00

                1mm/s is very very low. Have you tried increasing this to see if you can get over 50mm/sprint speeds? A jerk value that low means it basically has to come to a stop at every segment.

                Z-Bot CoreXY Build | Thingiverse Profile

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                • Phaedruxundefined
                  Phaedrux Moderator @JamesM
                  last edited by

                  @JamesM said in M203 Feed Rate cannot exceed 3000 mm/min:

                  What about the motor currents you set? I believe the max allowed if this is a duet 2 is 2400 yet I see your x, y and z set at 3000.

                  M906 X3000.00 Y3000.00 Z3000.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent

                  I wonder if that is causing an issue

                  The Duet won't honor values above it's own max, so the motor currents delivered to the motor would be limited to 2400ma. If the motors require more that could explain low top speed.

                  What are the motor specs?

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • dc42undefined
                    dc42 administrators @Eplov
                    last edited by

                    @Eplov said in M203 Feed Rate cannot exceed 3000 mm/min:

                    I have now run into a problem where my motors will not spin with a feed rate over 3000 mm/min, no matter how high a value i set in M203.

                    What is your evidence that they won't go above 3000mm/min?

                    The speed of the movement change up to 3000 mm/min from where it just stops. If i run a G1 command with a corresponding feed rate of F15000, then there is no problems, but i cannot hardcode it in the config file.

                    I am confused - you seem to be saying that you can get greater speeds. So under what conditions do you only get 3000mm/min?

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

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                    • Eplovundefined
                      Eplov
                      last edited by

                      If i just run a G1 X200 command i would expect the printer to move at maximum speed, but the printer does not move faster than 3000. I've looked through some GCode from Slic3R and that starts out by defining the speed within the first travel move. This means that the whole problem is more or less pointless.
                      Thank you very much for everyones help.

                      A Former User? 1 Reply Last reply Reply Quote 0
                      • A Former User?
                        A Former User @Eplov
                        last edited by

                        @Eplov said in M203 Feed Rate cannot exceed 3000 mm/min:

                        If i just run a G1 X200 command i would expect the printer to move at maximum speed

                        Then you should adjust your expectations, as the printer will not comply with them.

                        A G1 X200 move will move with the previously used feedrate for a G1 move.

                        dc42undefined 1 Reply Last reply Reply Quote 0
                        • A Former User?
                          A Former User
                          last edited by

                          In CNC mode you could use G0 X200 and it would move as fast as possible, as G0 is a rapid move; but in FFF mode G0 behaves just like G1.

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                          • dc42undefined
                            dc42 administrators @A Former User
                            last edited by

                            @bearer said in M203 Feed Rate cannot exceed 3000 mm/min:

                            @Eplov said in M203 Feed Rate cannot exceed 3000 mm/min:

                            If i just run a G1 X200 command i would expect the printer to move at maximum speed

                            Then you should adjust your expectations, as the printer will not comply with them.

                            A G1 X200 move will move with the previously used feedrate for a G1 move.

                            Exactly. Note, if the machine is configured for CNC mode then G0 moves do always move at maximum speed.

                            Duet WiFi hardware designer and firmware engineer
                            Please do not ask me for Duet support via PM or email, use the forum
                            http://www.escher3d.com, https://miscsolutions.wordpress.com

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