Hi all,
Experiencing a strange issue. One of the three Z stepper motors is running very hot to the touch when compared to the other two. Its a Core XY with Duex5. Z motors are connected to Deux5. Config below.
; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Wed May 01 2019 22:41:50 GMT+1000 (Australian Eastern Standard Time)
; General preferences
M80 ; Turns on the ATX power supply
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M667 S1 ; Select CoreXY mode
; Network
M550 P"RatRig" ; Set machine name
M552 S1 ; Enable network
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet
; Drives
M569 P0 S0 ; Drive 0 goes forwards - X
M569 P1 S0 ; Drive 1 goes forwards - Y
M569 P3 S1 ; Drive 3 goes forwards - E0
M569 P5 S1 ; Drive 5 goes forwards - Z1
M569 P6 S1 ; Drive 6 goes forwards - Z2
M569 P7 S1 ; Drive 7 goes forwards - Z3
M584 X0 Y1 Z5:6:7 E3 ; Set drive mapping
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X160 Y160 Z1600 E2725 ; Set steps per mm
M203 X15000 Y15000 Z600 E3000 ; Set maximum speeds (mm/min)
M201 X3000 Y3000 Z120 E720 ; Set maximum accelerations (mm/s^2)
M566 X600 Y600 Z60 E40 ; Set maximum instantaneous (jerk) speed changes (mm/min)
M906 X1500 Y1500 Z1000 E500 I5 ; Set motor currents (mA) and motor idle factor in per cent XY-17HM19-2004S E-MT-1702HS133A Z-1702E533G6-365E
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X290 Y290 Z280 S0 ; Set axis maxima
; Endstops
M574 X1 Y1 S0 ; Set active low endstops
; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H7 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H3 F300 T6000 A3 R0.2 ; Set Z probe type to bltouch, dive height, probe speed, travel speed, probe up to 5 times, recovery time between probes
G31 P25 X0 Y36 Z0.619 ; Set Z probe trigger value, offset and trigger height
M557 X25:265 Y41:281 S80 ; Define mesh grid
M671 X-40.0:145.0:330.0 Y40.0:370.0:40.0 ; z-lead screw positions at (-40,40), (145,370) and (330,40)
; Heaters
M143 H0 S140 ; Disable bang-bang mode for the bed heater and set PWM limit to 140C
M307 H0 A244.9 C316.6 D3.7 S1.00 V24.0 B0 ; PID tuned at 120C degrees
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
M307 H1 A302.0 C140.4 D2.9 S1.00 V24.0 B0 ; PID tuned at 240C degrees
; Thermistors
M305 P0 T100000 B3950 R4700 ; Set thermistor + ADC parameters for heater 0
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M305 P103 X6 T100000 B3950 R4700 S"PSU SSR"
M305 P104 X7 T100000 B3950 R4700 S"BED SSR"
; Fans
M106 P3 S0 I0 H-1 C"Part Fan" ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off - PART fan
M106 P4 S1 I0 H1 T40 C"Hotend Fan" ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on - EXTR fan
M106 P5 S0 T50 H100:101:102 "MCU Fan" ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on - DUET fan
; Tools
M563 P0 D0 H1 F3 S"Extruder 1" ; 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