Duet 3 mini warning for temperature?
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Are the driver chips actually hot to the touch?
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Today it is still to measure the temperature in the drivers that are overheated, those corresponding to the Z axis... To do this, I intend to use a thermometer with a probe... But I have a couple of questions:
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If you placed the probe over the drivers while Duet is on.... Is there a risk of short?
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To fix the thermometer sensor, he had thought of using Kapton mole tape. Are there any risks to the Duet Board?
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Googling a bit, I read the FW3.3 notes, and there is something similar to what the Duet board does to me, ".... you may get spurious overheat warning messages......".
What Firmware is "safe" to install, when I had 3.4 beta, I didn't receive these overheat warnings...
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3.4 RC2 is safe to try.
You don't need a thermometer to tell if they are hot or not. The warning would be generated at a very high temperature. You would notice very quickly with your fingertip if the driver was overheating or not.
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@phaedrux Houston we have a BIG problem.... i have power on printer, and in idle mode, i was checking the temperature over a driver with a termometer.... and it has burned, sparks have begun to fly. As fast as I could, I stopped the printer... after a while I tried to turn it on and sparks have jumped, I've tried it several times and they didn't stop jumping....
attached video of what happens every time I try to turn it on...
Now what can be done?
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@peirof that looks like the phase separation of the steppers failed, shorting out the drivers. This usually only happens if the stepper phases are miswired and you are overcurrenting the stepper.
At this point you have to assume the drivers on the board are blown, and with this spark generation, probably other components died as well. Your steppers may be beyond repair as well.
What to do next:
a) REMOVE ALL POWER FROM THE SYSTEM. This is an acute fire risk
b) replace board and steppers, including wiring. Make sure there is no chance for shorts between the pins. -
fine...
but the driver that has failed (came out on fire), had not given me problems... I think it is more related to the fact that it is in the driver that I have measured the temperature... with a thermometer..., it must be be more related to this...
I still don't know what I did to make it burn..., I've only measured the temperature in the driver, since since I downgraded firmware 3.4 to 3.3, 10 minutes after starting to print it gave me an error due to excess temperature... Not only in the burned driver, but in the drivers of the Z axis motors, all 3....
I've been committed to DUET boards for quite some time... But, for one reason or another, I haven't been able to come to fruition with any of the ones I've had, and with this one there have been 3...
I'm sure, although in some cases I have my doubts, like in this one... that the mistakes were mine, but you must understand that I'm tired of having problems. I think I'm going to jump ship on DUET, and explore other options, which are working well from what I see. For example, the printer I was about to finish has an Octopus plate by default, and the prints are good...
On the one hand I feel sorry, since I have been committed to Duet for quite some time... but on the other hand I feel excited to explore other options, maybe this is not a definitive goodbye, it is a see you later... but for now I'm going to leave you....
In large part I feel sorry, for the great work that the Duet staff does every day in this forum, most of the doubts, and there have been many. I just looked at it and I have been a user of the forum since 2007, and about 1200 posts. AND I HAVE NO COMPLAINTS FROM THE COMMUNITY, on the contrary, congratulations for the impeccable way of running the forum and solving doubts and providing solutions...
Just say goodbye, and congratulate you... just that maybe I haven't had a bit of luck...
BYE
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@peirof I understand your frustration, but if you shorted the board with your thermometer it would also have happened on an Octopus board. Best of success with your printer!
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Sorry to see you've had so much trouble. Those sparks were hard to watch. Remove all wiring and inspect the board. There is likely extensive damage.
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@peirof said in Duet 3 mini warning for temperature?:
I thought that Duet 3 mini, did not need a fan on the drivers... is there any way to know the temperature of the drivers? It sounds to me like I've read that the Duet 3 mini couldn't.
With 1600mA current on 3 drivers, you definitely need to cool the Duet 3 Mini using a fan. We don't recommend stick-on heatsinks, instead we suggest using a fan to blow air along the drivers on both sides of the board.
If the drivers overheat another 30C beyond the point of the warning then according to Trinamic they shut down automatically.
