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    Z Motor weak / one missing [solved for now]

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    • dc42undefined
      dc42 administrators
      last edited by

      Please post your config.g file.

      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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      • Bujundefined
        Buj
        last edited by

        ; Configuration file for Duet WiFi (firmware version 1.21)
        ; executed by the firmware on start-up
        ;
        ; generated by RepRapFirmware Configuration Tool v2 on Tue Nov 13 2018 10:58:17 GMT-0500 (Eastern Standard Time)

        ; General preferences
        G90 ; Send absolute coordinates...
        M83 ; ...but relative extruder moves

        M667 S1 ; Select CoreXY mode

        ; Network
        M550 PFraMal ; Set machine name
        M552 S1 ; Enable network
        M587
        M586 P0 S1 ; Enable HTTP
        M586 P1 S0 ; Disable FTP
        M586 P2 S0 ; Disable Telnet

        ; Drives
        M584 X0 Y1 Z2:4:5:6 ; Assing drivers to Z axis
        M569 P0 S0 ; Drive 0 goes forwards
        M569 P1 S0 ; Drive 1 goes forwards
        M569 P2 S1 ; Drive 2 goes forwards
        M569 P3 S1 ; Drive 3 goes forwards
        M350 X16 Y16 E16 Z16 I1 ; Configure microstepping with interpolation
        M92 X80.00 Y80.00 Z4000.00 E420.00 ; Set steps per mm
        M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
        M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; Set maximum speeds (mm/min)
        M201 X500.00 Y500.00 Z200.00 E250.00 ; Set accelerations (mm/s^2)
        M906 X800.00 Y800.00 Z1200 E1200:1200:1200 I30 ; Set motor currents (mA) and motor idle factor in per cent

        M84 S30 ; Set idle timeout

        ; Axis Limits
        M208 X0 Y0 Z0 S1 ; Set axis minima
        M208 X1200 Y1200 Z1000 S0 ; Set axis maxima

        ; Endstops
        M574 X1 Y1 Z1 S1 ; Set active low endstops

        ; Z-Probe
        M558 P5 H5 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
        G31 P500 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
        M557 X15:6 Y15:195 S20 ; Define mesh grid

        ; Heaters
        M307 H0 B0 S1.00 ; Disable bang-bang mode for the bed heater and set PWM limit
        M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
        M143 H0 S120 ; Set temperature limit for heater 0 to 120C
        M305 P1 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
        M143 H1 S280 ; Set temperature limit for heater 1 to 280C

        ; Fans
        M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
        M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

        ; Tools
        M563 P0 D0 H1 ; Define tool 0
        G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
        G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

        ; Automatic saving after power loss is not enabled

        ; Custom settings are not configured

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        • SupraGuyundefined
          SupraGuy @Buj
          last edited by

          @buj said in Z Motor weak / one missing:

          System is 24 volts powered
          Core XY
          This is my Driver mapping. I am controlling 4 nema 23 motors
          M584 X0 Y1 Z2:4:5:6 ; Assign drivers to Z axis
          X and Y are fine

          Try

          M584 X0 Y1 Z2:4:5:6 E3 ; Assign drivers to Z axis, unassign 4 from E axis.
          

          If the motor on drive 2 isn't turning, check that the jumpers are on the second output of drive 2. If they aren't, then that motor will be open circuit, since the second motor boss is in series with the first one.

          Lead screw driven printer, powered by Duet 2 Wifi
          MPCNC powered by Duet 2 Wifi
          CoreXY printer driven by Duet 3 6HC
          LowRider CNC powered by Duet 2 Wifi

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          • Bujundefined
            Buj
            last edited by

            @supraguy said in Z Motor weak / one missing:

            then that motor will be open circuit, since the second motor boss is in series with the first one.

            Jumpers are present,and installed as per factory. could they be defective? i doubt but at this point... i'll check

            thanks

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            • Bujundefined
              Buj
              last edited by

              [Update] From what i hear from theZ axis motor is that the signal frequency is too high and motors start skipping assoonas they recieve a signal . going downward is easier...

              Stephen6309undefined 1 Reply Last reply Reply Quote 0
              • Bujundefined
                Buj
                last edited by

                Reduced the Z acceleration from 200 to 50. Now going up and down as expected.
                Still no output from drive 2 Z motor...

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                • Stephen6309undefined
                  Stephen6309 @Buj
                  last edited by

                  @Buj
                  Z axis acceleration is probably too high, if there is no mechanical problem.

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                  • Bujundefined
                    Buj
                    last edited by

                    Mouvement out of 3 motors remapped as per config with low acceleration, still missing the 4th motor connected to Z output of DUET wifi

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                    • dc42undefined
                      dc42 administrators
                      last edited by dc42

                      Did you correct the M584 command as @SupraGuy suggested? That's very important, see the bold text at https://duet3d.dozuki.com/Wiki/GCode#Section_M584_Set_drive_mapping.

                      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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                      • Bujundefined
                        Buj
                        last edited by

                        the assign beeing M584 X0 Y1 Z2:4:5:6 E3
                        i understand that etruder is assign to 3? isnt it?
                        how do i unassign a drive?

                        dc42undefined 1 Reply Last reply Reply Quote 0
                        • dc42undefined
                          dc42 administrators @Buj
                          last edited by

                          @buj said in Z Motor weak / one missing:

                          the assign beeing M584 X0 Y1 Z2:4:5:6 E3
                          i understand that etruder is assign to 3? isnt it?
                          how do i unassign a drive?

                          Yes, that M584 command is correct. Do you still have the problem?

                          It may help diagnose the problem if you upgrade to firmware 2.02RC3 because it has better stepper driver diagnostics.

                          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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                          • Bujundefined
                            Buj
                            last edited by

                            The printer is on the move to the Maker Fair. will persue at a later date.

                            Thanks#

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                            • SupraGuyundefined
                              SupraGuy
                              last edited by

                              The reason for explicitly assigning E to drive 3 is that by default it would be ... E3:4 -- with drive 4 also assigned as an E axis. (As per the bolded text in the article dc42 linked.)

                              Lead screw driven printer, powered by Duet 2 Wifi
                              MPCNC powered by Duet 2 Wifi
                              CoreXY printer driven by Duet 3 6HC
                              LowRider CNC powered by Duet 2 Wifi

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