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    Z-Axis not homing

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    My Duet controlled machine
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    • Phaedruxundefined
      Phaedrux Moderator @rickypilnik
      last edited by

      @rickypilnik said in Z-Axis not homing:

      Supply voltage: min 0.0, current 15.4, max 15.7, under voltage events: 0, over voltage events: 0, power good: yes

      Does 15v sound correct for your power supply?

      @rickypilnik said in Z-Axis not homing:

      No I can't move the Z-axis, but x and y are fine even with the message of short to drivers from before.

      The short to ground message was only for driver 2, correct?

      Z-Bot CoreXY Build | Thingiverse Profile

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      • rickypilnikundefined
        rickypilnik
        last edited by

        Yes 15V sounds correct and the message is
        " Error: short-to-ground reported by driver(s) 2 "

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by

          Alright, I think we've established that the Z driver has failed unfortunately. Please hang on while I confer with DC42 in case he has any further ideas.

          When and where did you purchase your Duet 3?

          Z-Bot CoreXY Build | Thingiverse Profile

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          • rickypilnikundefined
            rickypilnik
            last edited by

            On the 5th May 2020, from E3D Online, and it's a Maestro

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            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              Ah yes, sorry, Maestro.

              Z-Bot CoreXY Build | Thingiverse Profile

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              • Phaedruxundefined
                Phaedrux Moderator @rickypilnik
                last edited by

                @rickypilnik said in Z-Axis not homing:

                (changed all motor currents to 1875mA (max is 2.5A)

                I think the reason I assumed it was a Duet 3 was because of this statement on motor current.

                These motors may not be well suited to the Maestro as it's drivers are rated for 1.4a peak. The Duet wifi is 2.4a and the Duet3 6.3.

                You'd have to run the drivers at full power to get close to 60% of the rated max for the motors. This will require actively cooling the driver chips.

                If you send M906 in the console, what does it report back with?

                Z-Bot CoreXY Build | Thingiverse Profile

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                • rickypilnikundefined
                  rickypilnik @Phaedrux
                  last edited by rickypilnik

                  @Phaedrux That is quite unfortunate to hear, but if I switch it to a duet 2 wifi you reckon things should be ok?

                  As in it should stop shorting to ground if I use a lower motor current on a different printer, say a CR-10 with motors that max out at 1.5A anyways.

                  Motor current (mA) - X:1875, Y:1875, Z:1875, E:1875, idle factor 30%

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                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

                    Yes a Duet2Wifi/Ethernet would be a much better match for those motors.

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • rickypilnikundefined
                      rickypilnik
                      last edited by

                      So after all that, having switched boards around I think I found the underlying problem of this all......... A badly crimped factory connector on the Velleman..........AGHH
                      Anyway thanks for all your help you helped solve problems I wasn't even aware of yet!

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        Glad you got it figured out and the driver hasn't failed.

                        Z-Bot CoreXY Build | Thingiverse Profile

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