Duet3mini driver gets HOT after a few seconds of movement

likevvii

I am currently testing a newly built printer's motions.

After a successful sensorless home sequence, the driver would get burning hot to the touch after a few seconds.
Soon after, I would get driver temperature warnings, then driver short to ground warning and finally, the motors are disabled in the span of 20 seconds. BOTH drivers get hot.

Duet 3 mini 5+ @24V
Core XY printer (E3D tool changer motion system only)
Motors are 2A continuous rated

Originally, the motor current settings was set to 1800, I dropped to 1300 and the problem did not get any better.

I had initially got the wiring incorrect for both the motors. supposed to be AABB, but It was wired as ABAB. I got the driver short warning, swapped to the correct wiring and movement works properly now (except for the rapid overheating issue). Maybe I damaged the driver by having the wire issue.

config.g

; Drive direction
M569 P0 S0 V60					; Drive 0 X
M569 P1 S0 V60	 				; Drive 1 Y
M569 P2 S1 						; Drive 2 Z
M569 P3 S0 						; Drive 3 E0



M584 X0 Y1 Z2 E3						; drive mapping
M208 X0:250 Y0:250 Z0:250 				; Set axis maxima & minima
M92 X100 Y100 Z1600 E690				; Set steps per mm assuming x16 microstepping
M350 X16 Y16 Z16 E16 I1					; Configure microstepping with interpolation
M566 X400 Y400 Z8 E300					; Set maximum instantaneous speed changes (mm/min)
M203 X35000 Y35000 Z1200 E3600			; Set maximum speeds (mm/min)
M201 X6000 Y6000 Z400 E1000				; Set accelerations (mm/s^2)


M906 X1300 Y1300 Z1330 I30   			; Idle motion motors to 30%
M906 E450 I10     						; Idle extruder motors to 10%

; Endstops
M574 X1 Y1 S3 							; Set X / Y endstop stall detection
M574 Z0  								; No C Z endstop

;Stall Detection
M915 X Y S3 F0 H400 R0				; X / Y Axes

homex.g

; homex.g
; called to home the x axis

G91 							; use relative positioning

G1 H2 X0.5 Y-0.5 F10000			; energise motors to ensure they are not stalled

M400 							; make sure everything has stopped before we change the motor currents
M913 X20 Y20 					; drop motor currents to 25%
M915 H200 X Y S3 R0 F0 			; set X and Y to sensitivity 3, do nothing when stall, unfiltered

G1 H2 Z3 F5000					; lift Z 3mm
G1 H1 X-400 F3000 				; move left 400mm, stopping at the endstop
G1 H1 X2 F2000 					; move away from end
G1 H2 Z-3 F1200					; lower Z
G90 							; back to absolute positioning

M400 							; make sure everything has stopped before we reset the motor currents
M913 X100 Y100 					; motor currents back to 100%

Phaedrux

@likevvii said in Duet3mini driver gets HOT after a few seconds of movement:

Maybe I damaged the driver by having the wire issue.

I'm thinking so, but will check with DC42.