Z-Axix is lowering while in Pause or error position.
Hi, I observed an behavior, where the Z-axis is lowering while the extruder is in park position.
It seems it lowers very slow because if the extruder was only a short time in park (e.g. 5 minutes) then it seems okay, but at some prints the extruder were longer time in park positon (due to FINDA and Filament issues in MMU).
At one time the extruder was over night (about 6 hours+) in park, after resume the Hotend fullly runs through the print, the extruder was approx. 5 mm deeper than it should be.
At another time, the extruder was 1-2 hours in park, then the hotend was "only" 1 mm deeper as bevor it went to park position.
My first assumption was, that the bowden or the extruder cable putting some higher force onto the Z-axis, so I changed guidance and endure free movement, But ut didnt changed the behavior, the Z-axis still "slips" in park downwards with approx 1mm/2hours.
I have the latest FW installed (6.0.1) but maybe the idle current for the z-axis steppers is to weak??
Greets Thorsten
RE: Z-Axix is lowering while in Pause or error position.
Hi,
yesterday it happens again, this time the printer was approx 2 hours in Error due to "Couldn`t load to finda" (Filament spool was retracted to much and the pulley wasn´t able to take the filament)
After correcting this in the MMU (MMU is outside enclosure) and confiriming message, the printer resumes. In the firs moment everything seems to be okay, but later a bulge was visible at the error position. The bulge is at all sides, so an layer shift didn´t happen. I assume that the extruder slips approx 0.1 to 0.2 mm and melted the previous layer also. btw. infill was 100%.
Greets Thorsten
