power-fail triggers unexpectedly
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Hey there. For a while now, I've been dealing with layer-shifts in my prints, which shouldn't be possible as my printer is a delta (so lost steps would not linearly shift things)
I just now found, after watching the printer closely for hours that apparently the printer enters power-fail state.
I first noticed that the "layer shifts" always happened after a loud noise, like snapping plastic, and inspecting the print now, it does seem the head stayed in the same place for a bit.
I do not think the PSU has any issues, as it's a Meanwell LRS-350-24 with a relay cutting mains, controlled by the duet. It has worked flawlessly before I moved to duet.
What I suspect is maybe a firmware glitch turning off the PSU off, or maybe an erroneous VIN low reading, though there are no "VIN LOW" warnings.The duet itself is powered separately by a Meanwell RS-15-5.
For now, I've attached a scope to the 24v supply, and the PSon line, and will try to capture a glitch on either.
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Okay, this is even more confusing, as I don't currently have that feature enabled. I've upgraded to RC4 from RC2
We'll see if that helps.
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Recent firmware versions save the resume info whenever you pause the print, to allow you to do a planned power down e.g. overnight and resume the print later. I'll change the message to "Resume info saved" or similar because the existing message is confusing.
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Hmm, okay. I'll keep hunting the mysterious layershifts then
