motor phase A may be disconnected reported by driver(s) 3



  • I've got my board wired into my printer (wanhao duplicator i3 plus) and I'm read to calibrate my esteps. I created a filament and a load/unload macro.

    When I go to load filament, it makes a terrible noise and gives me this warning.

    motor phase A may be disconnected reported by driver(s) 3
    

    Here's my Drives portion of my config.g

    ; Drives
    M569 P0 S0 ; physical drive 0 goes backwards
    M569 P1 S0 ; physical drive 1 goes backwards
    M569 P2 S0 ; physical drive 2 goes backwards
    M569 P3 S1 ; physical drive 3 goes forwards
    M584 X0 Y1 Z2 E3 ; set drive mapping
    M350 X128 Y128 Z128 E16 I0 ; configure microstepping without interpolation
    M92 X640.00 Y640.00 Z3200.00 E100.00 ; set steps per mm
    M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
    M203 X12000.00 Y12000.00 Z1200.00 E3000.00 ; set maximum speeds (mm/min)
    M201 X1000.00 Y1000.00 Z100.00 E5000.00 ; set accelerations (mm/s^2)
    M906 X855 Y855 Z855 E855 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    And I just copied and pasted the load/unload and adjusted values. Here's the load
    M291 P"Please wait while the nozzle is being heated up" R"Loading PLA" T5 ; Display message
    G10 S190 ; Set current tool temperature to 190C
    M116 ; Wait for the temperatures to be reached
    M291 P"Feeding filament..." R"Loading PLA" T5 ; Display new message
    G1 E10 F600 ; Feed 10mm of filament at 600mm/min
    G1 E470 F3000 ; Feed 470mm of filament at 3000mm/min
    G1 E20 F300 ; Feed 20mm of filament at 300mm/min
    G4 P1000 ; Wait one second
    G1 E-10 F1800 ; Retract 10mm of filament at 1800mm/min
    M400 ; Wait for moves to complete
    M292 ; Hide the message
    G10 S0 ; Turn off the heater again

    Looks like some other users have maybe had connection issues, so I'll go back and check the connections. Is that the most likely?


  • Moderator

    @rschlachter said in motor phase A may be disconnected reported by driver(s) 3:

    Is that the most likely?

    Yes. Perhaps you have the phases mixed up or crossed or a bad crimp on one wire.



  • I must have had a bad connection. I re-did the connector on one side and we're good.


  • administrators

    Typically, reports of just one phase being disconnected (always the same one) indicates a bad connection. Whereas if it reports both phases may be disconnected, it's usually something else.


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