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    One z motor don’t always move

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    • droftartsundefined
      droftarts administrators @Alucardi
      last edited by

      @Alucardi Please send M115 to the Duet and post the reply. This will show which firmware version you are using.

      If the motor does move in both directions, however badly, it's unlikely that the driver is the problem; it's more likely to be a configuration problem. I've spotted a couple of errors in your config.g that may be causing this issue, particularly if you are using older firmware. This is part of your config.g:

      ; Drives
      M584 X0 Y1 Z2:4                ; two Z motors connected to driver outputs Z and E1
      M569 P0 S1                     ; Drive x goes backwards
      M569 P1 S1                     ; Drive y goes backwards
      M569 P3 S1                     ; Drive e goes backwards
      M569 P2 S1                     ; Drive z goes backwards
      M569 P4 S1                     ; Drive E1(Z2) goes backwards
      
      M350 X16 Y16 Z16 E16 I1        ; Configure microstepping with interpolation
      M92 X160 Y160 Z3200 E415       ; Set steps per mm
      M906 X800 Y800 Z1000 E400 I30  ; Set motor currents (mA) and motor idle factor in per cent
      ;M915 X Y Z S3 F1 H400 R3      ; Stall detection (Currently of)
      
      ; Speed&Feed settings
      M566 X400 Y380 Z24 E3600:24          ; Jerk settings
      M203 X12000 Y12000 Z600 E3600:600    ; Set maximum speed (mm/min)
      M201 X1000 Y950 Z20 E3000:20         ; Max Accelerations (mm/s^2)
      M8 S30                               ; Set idle timeout
      

      A couple of things...

      You haven't set the extruder motor in M584. Change the M584 line to:
      M584 X0 Y1 Z2:4 E3 ; two Z motors connected to driver outputs Z and E1

      In M566, M203 and M201 you have set additional values for a second extruder. I can see you have tried to set them to the Z value, but this is the incorrect way of doing this, and may be causing your issue. Remove the second setting. Change them to:
      M566 X400 Y380 Z24 E3600 ; Jerk settings
      M203 X12000 Y12000 Z600 E3600 ; Set maximum speed (mm/min)
      M201 X1000 Y950 Z20 E3000 ; Max Accelerations (mm/s^2)

      With the correct M584 setting, Z values will be applied to both Z axes, and E values will be applied just to the extruder.

      Please try these changes and report back.

      Ian

      Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

      Alucardiundefined 3 Replies Last reply Reply Quote 2
      • droftartsundefined
        droftarts administrators @elliott.griffiths
        last edited by

        @elliott-griffiths It's fine to run the two motors on the same axis on independent drivers. It allows the axis to be levelled automatically. See https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

        @Alucardi you could run both Z motors from the Z driver as @elliott-griffiths suggests, but no, you can't then use G32. On the plus side, once you level the bed by hand, they are far less likely to go out of sync. If you want to test this, rewire the motors (with POWER OFF, or you risk damaging the stepper drivers), do the changes to config.g I say above, then change M584 to:
        M584 X0 Y1 Z2 E3

        Ian

        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

        1 Reply Last reply Reply Quote 1
        • Alucardiundefined
          Alucardi @droftarts
          last edited by Alucardi

          @droftarts firmware is 2.05.1
          I will try your suggestions tonight. I know I could run of same driver but if it’s a defective drive I would still get it fixed but let’s hope it’s just firmware and nothing else.

          1 Reply Last reply Reply Quote 1
          • ChrisPundefined
            ChrisP
            last edited by

            M8 S30 should also be M84 S30 too, FWIW.

            Alucardiundefined 1 Reply Last reply Reply Quote 1
            • Alucardiundefined
              Alucardi @ChrisP
              last edited by

              @ChrisP do I really want that command? It mentioned that it won’t be that great during a print. If I do layers that above the idle time won’t it be able to sag if z goes to idle if not being used?

              ChrisPundefined 1 Reply Last reply Reply Quote 0
              • ChrisPundefined
                ChrisP @Alucardi
                last edited by ChrisP

                @Alucardi It's a good question, tbh. I was under the impression that any move on any axis would reset the counter. I've just gone and had a quick look at teh firmware source, and that does appear to be the case too. So as long as your printer is moving at least on motor in that time, I think you should be fine.

                Reference: see here, that the S parameter is parsed independantly of the axis.

                droftartsundefined 1 Reply Last reply Reply Quote 1
                • droftartsundefined
                  droftarts administrators @ChrisP
                  last edited by

                  @ChrisP said in One z motor don’t always move:

                  @Alucardi I was under the impression that any move on any axis would reset the counter ... So as long as your printer is moving at least on motor in that time, I think you should be fine.

                  Yes, that's correct. It will only idle the motors when ALL motors have stopped moving for over 30 seconds, if M84 S30 is set.

                  Ian

                  Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                  1 Reply Last reply Reply Quote 0
                  • Alucardiundefined
                    Alucardi @droftarts
                    last edited by

                    @droftarts i changed the code and after running a g32 I got a motor sound (after it adjusted the bed when printer was idle it gave a sound froM the motor) which I never heard before so I guess something changed. I will try homing and a few other more tonight, hopefully it’s fixed but it’s hard to force the issue so time will tell.

                    1 Reply Last reply Reply Quote 0
                    • Alucardiundefined
                      Alucardi @droftarts
                      last edited by

                      @droftarts well I have I bin running the printer a lot tonight with short prints. I have bin trying to get PA calibrated which really is a pain. So far no issues.

                      droftartsundefined 1 Reply Last reply Reply Quote 0
                      • droftartsundefined
                        droftarts administrators @Alucardi
                        last edited by

                        @Alucardi Great, hopefully that's fixed it.

                        Ian

                        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                        Alucardiundefined 1 Reply Last reply Reply Quote 0
                        • Alucardiundefined
                          Alucardi @droftarts
                          last edited by Alucardi

                          @droftarts Still no problems. My g32 usually reported like deviation of -0.150 or so. Now its always below -0.014 or less. So i would think this is a fixed problem now. I appreciate al lthe support and help.

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