power-fail triggers unexpectedly
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.
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.
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.
Hmm, okay. I'll keep hunting the mysterious layershifts then