Oh oh! Bad news - Error: Short-to-ground on drivers 0

nickpgre

Hello everyone,

Today, I installed (almost) my new DuetWifi, and accessing the Duet Web control for first time whilst being powered on a 24v power supply (350w) and got spammed with this warning:

Warning: Error: Short-to-ground on drivers 0
Warning: Error: Over temperature shutdown on drivers 0

I've double checked and triple checked everything and all my wires are correct. As a matter of fact even without having anything connected to the drivers, (only power wire and heated bed) I still get this error.

I also updated the firmware to 1.20.1
M115
FIRMWARE_NAME: RepRapFirmware for Duet WiFi FIRMWARE_VERSION: 1.20.1 ELECTRONICS: Duet WiFi 1.0 FIRMWARE_DATE: 2018-01-08

Also did run diagnostics (M122) and got the following:

And this the output I am receiving using the M112

=== Diagnostics ===
Used output buffers: 3 of 32 (14 max)
=== Platform ===
RepRapFirmware for Duet WiFi version 1.20.1 running on Duet WiFi 1.0
Board ID: 08DGM-95BNL-MGPSJ-6J1FD-3S46T-KKY3X
Static ram used: 15372
Dynamic ram used: 98780
Recycled dynamic ram: 536
Stack ram used: 1336 current, 4260 maximum
Never used ram: 12124
Last reset 00:06:34 ago, cause: software
Last software reset time unknown, reason: User, spinning module GCodes, available RAM 12124 bytes (slot 3)
Software reset code 0x0003 HFSR 0x00000000, CFSR 0x00000000, ICSR 0x0441f000, BFAR 0xe000ed38, SP 0xffffffff
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 23.6, current 23.9, max 24.1
Supply voltage: min 24.4, current 24.5, max 24.7, under voltage events: 0, over voltage events: 0
Driver 0: temperature-shutdown! short-to-ground standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2018-01-21 14:54:32
Cache data hit count 2316986664
Slowest main loop (seconds): 0.006525; fastest: 0.000108
=== Move ===
MaxReps: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm 240, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 0, completed moves: 0
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
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
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
Network state is running
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 1.19
WiFi MAC address a0:20:a6:2f:bf:f9
WiFi Vcc 3.10, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 39560
WiFi IP address 192.168.1.111
WiFi signal strength -56dBm, reconnections 0, sleep mode unknown
HTTP sessions: 1 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
Warning: Error: Short-to-ground on drivers 0
Warning: Error: Over temperature shutdown on drivers 0

Is there anything i might have missed and it is something that can be magically fixed?

Thanks,
Nick

dc42

Sadly that suggests that the driver chip has failed. Please ask for your Duet to be repaired/replaced under warranty. See https://www.duet3d.com/warranty if you bought it direct from duet3d.

nickpgre

Thanks, I'll do

audryhome

@dc42

When homing, I have an error "Short to ground on driver 1".
If I run M122, I got the driver status : "short-to-ground standstill, SG min/max 0/0"

If I invert drivers, I have the error on the other drive, this make me think it is related to the stepper, not the driver chip.

I double checked for connection of this stepper, everything fine.

This stepper is always disabled, either on drive 0 or drive 1.

I don't have any undervoltage error on M122.

Could it be the power supply?

dc42

@audryhome said in Oh oh! Bad news - Error: Short-to-ground on drivers 0:

@dc42

When homing, I have an error "Short to ground on driver 1".
If I run M122, I got the driver status : "short-to-ground standstill, SG min/max 0/0"

If I invert drivers, I have the error on the other drive, this make me think it is related to the stepper, not the driver chip.

Please explain what you mean by that last sentence. Do you mean that the error moves to a different driver number if you plug that motor cable into a different driver output on the Duet? If so, that suggests a fault in the cabling or a short in the motor.

audryhome

@dc42 Yes exactly, I have to consider changing the stepper and test again thanks.

audryhome

@dc42 Changed the cable supplied with stepper (!) with another one and it works.
thanks for your answer