Hello,
I do not know what the problem is,when I printing,The printer loses orientacion,and moves the table a few cm in axis y,x outside and and continue with printing.
-harness,bandes are tightened
here is picture: ulozisko.sk/707883/bad_prints.PNG
Your picture link doesnt’t work…
From your explanaition i assume your steppers lose steps ore get stuck in between print.
What Vref did you set at the drivers?
Check your belt tension again. the belts should be bendable with light finger pressure.
If you set them too tight they might block the steppers!
Do the linear bearings on the bed axes run smooth?
Okay, your picture semms like i thought earlier.
Please let me know:
What Vref did you set at the drivers?
Check your belt tension again. the belts should be bendable with light finger pressure.
If you set them too tight they might block the steppers!
Do the linear bearings on the bed axes run smooth?
it’s moved so after cca.5 min printing,
How do I set vref?
could you please answer my questions?
linear bearings go smoothly,and and how do I set vref?
Vref is the Voltage you set on the stepper motors to tune the current supplied to the motors.
The Velleman documentaition says to set it to 0.425v but that is not sufficient.
try to set it up to 0.55V.
Serus,
How do I set up a calibration voltage to 0.55 V? LCP with a screwdriver it is the little screw?
look at this page in the velleman documentation
[color=#0080FF]http://www.k8200.eu/manual/printing/?c=002[/color]
It is also downloadable as PDF
These pictures describe how to calibrate the stepper drivers:
[color=#FF0000]JUST SET IT TO 0.55V instead ov 0.425V![/color]
Problem is solved thank you very much
you’re welcome!
Hi, I have exactly the same problem.
I didn’t build the printer myself, but I have turned the screws up to 547 was roughly as close as I could get, but I still get the problem.
I’m assuming that the printer has to be mains powered when setting this? On usb connected only, it’s a lot lower.
Thing is, I’ve noticed in Repetier, that when this problem occurs, I can move the z axis via the arrow and also the x-axis, but the y-axis will only move backwards (which appears to be the problem, as it is not moving forward for the next layer).
If I HOME the printer, I can then move in both y-axis directions.
The belts are as tight as they should be and move/glide freely when the power is off.
Any additions anyone can think of
I forgot to add that if the print is under 5cm away from the home position, I get this problem. If it’s just a small piece, fitting into 5cm, from the home position, then it’s fine…
I’ve had similar issues at the beginning.
I run vref @0.44V, standard setting.
Greasing the axles and linear bearings helped a lot.
Give it a first try with e.g. regular cooking oil.
I personaly use LM47 Grease from Liquimoly.
http://www.liqui-moly.de/liquimoly/produktdb.nsf/id/en_3510.html?OpenDocument&land=GB&voilalang=e&voiladb=web.nsf
Yes, greasing might help.
But the most important part is to absolute perfectly align the bearings relative to eaxh other ant to the rods.
Hi,: resolved my problem by using the k8200 specific version of repetier, just worked. I did grease the rods afterwa ds as well.
