Short to ground alarm on the duet board
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@dc42 also a heads up, i tried swapping the ports in the config.g as i had seen someone do on the duet3d forum but still the alarm persists, strangely i can home the machine, pick and drop tools, fans work too, and i can heat the tools and the bed, hopefully you have some solution to this
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@bearer where can i M569 this, in the config.g , just asking cause i am new to the duet, but have expeirence with other printer boards, also i tried to swap the ports from 3/4/5/6 to 7/4/5/6 that didnt get the alarm silent as well
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@rajilpahuja said in Short to ground alarm on the duet board:
@bearer where can i M569 this, in the config.g , just asking cause i am new to the duet, but have expeirence with other printer boards, also i tried to swap the ports from 3/4/5/6 to 7/4/5/6 that didnt get the alarm silent as well
Yes, in config.g you will already have a line
M569 P3and something else, addR-1to that line to make the error go away (the driver will still be defective, but disabled)The motor on driver 3 worked fine on another driver after you swapped?
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@bearer i didnt try that as yet but, i can try that and see , firstly i think want the alarm gone, cause those keep coming
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@rajilpahuja said in Short to ground alarm on the duet board:
i can try that and see
make sure to check the wiring first so you don't risk damaging another driver if there was a problem with the wiring.
the errors will go away with adding R-1 to disable driver 3.
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@bearer strangely the wiring came from E3D so i am perplexed how they would have messed it up
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@bearer the line there says M569 P3 S0, so i need to add like this M569 P3 S0 -R1 ?
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@rajilpahuja said in Short to ground alarm on the duet board:
M569 P3 S0 -R1
M569 P3 S0 R-1not the value for R is -1
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@bearer ok will try this to see if error goes
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@rajilpahuja said in Short to ground alarm on the duet board:
@bearer strangely the wiring came from E3D so i am perplexed how they would have messed it up
they probably didn't but doesn't hurt to double check.
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@bearer i think i should have but generally i never had issues with their stuff, so was relaxed on the checking part, but i guess need to check even if its from the most dependable companies
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There are many reports here about people getting a 'short to ground' errors. Are these really shorts to ground or something else? If the latter, consider to change the error message?
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Good news is that after adding the R-1 the alarm went away, now i must inspect all the wires to be very sure before plugging them in :), but hope i get a replacement
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@zapta my guess is sometimes you can get faulty boards or drivers, electronics are after all not a 100% all the time, or it could be a wiring thing from the @E3D ppl, anyways i will have to investigate this, and hopefully i get a replacement
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@rajilpahuja, something is probably wrong ;-), but considering that the steppers connectors don't even include a ground line, I wouldn't be surprised if most fo the 'short to ground' alarms we see on these forums mean something else.
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@zapta said in Short to ground alarm on the duet board:
I wouldn't be surprised if most fo the 'short to ground' alarms we see on these forums mean something else.
i think most of them are sort of accurate, its just the short to ground is internal to the failed driver; at least after the fact.
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@rajilpahuja said in Short to ground alarm on the duet board:
@bearer i think i should have but generally i never had issues with their stuff, so was relaxed on the checking part, but i guess need to check even if its from the most dependable companies
Unfortunately we do see a few infant mortality failures of the stepper driver chips, so it's probably a chip failure. But please check the wiring in case a couple of pins have been swapped over. There should be low resistance between pins 1 and 2 of the motor connector, low resistance between pins 3 and 4, but high resistance between 1 or 2 and 3 or 4.
Either way, assuming you bought both the Duet and the wiring loom from E3D, you are entitled to have your Duet replaced or repaired under warranty.
