Driver 1 Phase A short to ground...but when it's disconnected?

tomasro

I'm ALMOST at my wits end with this...

Duet reports:
-Filament out (filament is loaded)
-X and Y axis are homed (they aren't)
-Driver 1 Phase A and B short to ground (happens when Driver 0 and 1 are connected or not)

Synopsis: The printer was printing great, then started having these issues. I replaced the Duet2Wifi but nothing changed. Then the problem went away after replacing the CoreXY motors. Then it was printing great, but today the same problem came about.

Side note and possibly unrelated: I have a 3/8" thick 500mmx500mm bed with a 600w silicon heating pad that takes a while to heat up, and occasionally the Duet will report that it's heating too slow. I've PID tuned the bed (as seen in the config file), but I can usually get past it with a fault reset.

Could someone point me in a direction that doesn't involve pulling out what remaining hair I have? Thanks in advance

Config.g:

; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.4 on Fri Oct 22 2021 23:28:40 GMT-0700 (Pacific Daylight Time)

; General preferences
G90                                                    ; send absolute coordinates...
M83                                                    ; ...but relative extruder moves
M550 P"R2D Cube"                                       ; set printer name
M669 K1                                                ; select CoreXY mode

M912 P0 S-8.2											;calibrate MCU temperature

; Network
M552 S1                                                ; enable network
M586 P0 S1                                             ; enable HTTP
M586 P1 S0                                             ; disable FTP
M586 P2 S0                                             ; disable Telnet

; Drives
M569 P0 S0                                             ; physical drive 0 goes backwards
M569 P1 S0                                             ; physical drive 1 goes backwards
M569 P3 S1                                             ; physical drive 3 goes forwards
M569 P5 S0
M569 P6 S0
M569 P7 S0
M569 P8 S0

; Disable unused stepper drivers

M569 P2 R-1
M569 P4 R-1
M569 P9 R-1


M584 X0 Y1 Z5:6:7:8 E3                                       ; set drive mapping
M671 X-40:515:-40:515 Y37:37:430:430 S5 ; leadscrews at left front, right front, left rear, right rear
M350 X16 Y16 Z16 E16 I1                                ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z808.00 E402.00                      ; set steps per mm
M566 X900.00 Y900.00 Z100.00 E120.00                    ; set maximum instantaneous speed changes (mm/min)
M203 X12000.00 Y12000.00 Z6000 E1200.00                ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z250 E250.00                    ; set accelerations (mm/s^2)
M906 X900 Y900 Z800 E800 I1                            ; set motor currents (mA) and motor idle factor in per cent
M84 S10                                                ; Set idle timeout


;Pressure Advance
M572 D0 s0.02

; Axis Limits
M208 X0:455 Y0:400 Z0:420

; Endstops
M591 P2 C"!duex.e2stop" S1 D0 			        ; filament monitor connected to E0 endstop
M591 D0 										; display filament sensor parameters for extruder drive 0

M574 X1 S1 P"!duex.e3stop"                                   ; configure switch-type (e.g. microswitch) endstop for low end on X
M574 Y1 S1 P"!duex.e4stop"                                   ; configure switch-type (e.g. microswitch) endstop for low end on Y
;M574 X1 S3
;M574 Y1 S3
;M574 Z1 S2                                             ; testing stall control for homing

;M915 P0:1 S3 R0 F0 H400

; Z-Probe
M950 S0 C"duex.pwm1"                                  ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H10 F600 T10000                   ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X35 Y35 Z1.3                                   ; set Z probe trigger value, offset and trigger height
M557 X72:490 Y35:440 S50                              ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B3950         ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                                  ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 R0.221 C451.3 D2.62 S1.00             ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                                ; map heated bed to heater 0
M143 H0 S120                                           ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                                   ; create nozzle heater output on e0heat and map it to sensor 1
;M307 H1 B0 S1.00                                       ; disable bang-bang mode for heater  and set PWM limit
M307 H1 R3.422 K0.381:0.000 D1.69 E1.35 S1.00 B0 V24.6
M143 H1 300                                           ; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q500                                   ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                         ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                                   ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1.0 H1 T45                                     ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency                        
;M106 P2 H2:3 L0.15 X1 B0.3 T30:70 ; set fan 2 value
M106 P2 H-1 S1 ;T30
M950 F3 C"e1heat" Q250
M106 P3 H-1 S0

; Tools
M563 P0 D0 H1 F0                                       ; 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

;Temp Sensor trigger
;M308 S2 Y"drivers" A"DRIVERS"  ; configure sensor 2 as temperature warning and overheat flags on the TMC2660 on Duet
M308 S3 Y"mcu-temp" A"MCU" ; configure sensor 3 as on-chip MCU temperature sensor
;M308 S4 Y"drivers-duex" A"DRIVERS-DUEX" ; configure sensor 3 as temperature warning and overheat flags on the TMC2660 on Duex

; Custom settings are not defined

T0;

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.4.0 (2022-03-15 18:58:31) running on Duet WiFi 1.02 or later
Board ID: 0JD0M-9X6JA-JUNSW-6J1FG-3SD6P-1AMVU
Used output buffers: 3 of 24 (17 max)
=== RTOS ===
Static ram: 23868
Dynamic ram: 74856 of which 0 recycled
Never used RAM 13356, free system stack 184 words
Tasks: NETWORK(ready,13.2%,232) HEAT(notifyWait,0.0%,332) Move(notifyWait,0.0%,364) MAIN(running,83.8%,440) IDLE(ready,2.9%,30), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:00:34 ago, cause: software
Last software reset at 2022-06-01 11:18, reason: User, GCodes spinning, available RAM 13284, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Step timer max interval 0
MCU temperature: min 25.8, current 26.5, max 26.8
Supply voltage: min 24.3, current 24.5, max 24.8, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Events: 1 queued, 1 completed
Driver 0: standstill, SG min n/a
Driver 1: standstill, SG min n/a
Driver 2: standstill, SG min n/a
Driver 3: standstill, SG min n/a
Driver 4: standstill, SG min n/a
Driver 5: 
Driver 6: 
Driver 7: 
Driver 8: 
Driver 9: 
Driver 10: 
Driver 11: 
Date/time: 2022-06-01 11:18:41
Cache data hit count 1218411468
Slowest loop: 18.76ms; fastest: 0.19ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 1.3ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, segments created 0, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty
=== Filament sensors ===
Extruder 0 sensor: no filament
=== Network ===
Slowest loop: 19.09ms; fastest: 0.00ms
Responder states: HTTP(2) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 2 of 8
- WiFi -
Network state is active
WiFi module is connected to access point 
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 1.26
WiFi MAC address 48:3f:da:a6:82:fa
WiFi Vcc 3.39, reset reason Power up
WiFi flash size 2097152, free heap 24160
WiFi IP address 192.168.1.200
WiFi signal strength -43dBm, mode 802.11n, reconnections 0, sleep mode modem
Clock register 00002002
Socket states: 0 0 0 0 0 0 0 0

tomasro

UPDATE: I disconnected the Duex5 board, and moved the end stops to the Duet board, so now the only thing that would be connected to the Duex5 board is the BLTouch servo and the 4 z motors.

The short to ground error has gone away.

Any clues??

dc42

@tomasro if connecting the DueX leads to short-to-ground errors being reported on drivers on the Duet, the most likely explanations are lack of VIN power to the DueX, or lack of 5V power to the DueX through the ribbon cable. I suggest you start by checking that the VIN terminal block screws on the DueX are tight.

tomasro

@dc42 The Lugs on the VIN for the DUEX board were not loose, but I was able to tighten them down (multimeter reads 24V). Fuse has continuity.

I plugged the ribbon cable back in and the BLTouch gets power, and does a self test on power up, but the z motors don't lower for the X or Y homing (which they should) and they don't raise the bed for a bed homing.

Phaedrux

Can you check continuity of the wires in the ribbon cable?

tomasro

@phaedrux @dc42 I removed the Duex board, and replugged the power, drivers and ribbon cable...and now it works. Thank you for your diagnostic help!!!!!

Solved Driver 1 Phase A short to ground...but when it's disconnected?