Jump to content
Ultimaker Community of 3D Printing Experts
pa_tanhuanco

Loud noise from Z motor while Leveling (UMO+)

Recommended Posts

Hi All,

Just encountered this problem today.

My prints are really bad today, the first layer not adhering to the build plate. As I had to reset, and bring it to 'Auto home' after every failed attempt - suddenly in one of my attempts there's a loud, alarming noise when leveling the plate. Happened twice already, and I took a video of it. (see youtube link).

 

In this video I tried hitting the Auto-home multiple times, until it encounters the problem.

What could have caused this? and How to fix it?

The sound is very alarming!!!

Appreciate your feedback and help!

Thanks!

Regards,

Patrick

Share this post


Link to post
Share on other sites

Most likely your stepper driver is too hot. Check the fan underneath and make sure it's spinning properly. Consider using air conditioning to cool the whole room maybe? Or just put a desk fan such that it blows under the printer (maybe tilt the printer 20 degrees - it prints fine in any orientation including upside down).

That sound can be caused by too little current (even though it sounds like too much to your ears maybe) and also by too much current. Most likely too little. Most likely a temperature issue like I said. You can test by swapping the driver chip among 2 axes - oh wait - this is umo+? There is no fan. On the UMO+ and UM2 this is a very common problem - especially with the z driver. It gets too hot. So remove the bottom cover - that might be enough airflow but try blowing some air under there. Also it's recommended to lower the Z driver current to 1000ma. I think they lowered it in the UM2 firmware but probably forgot in UMO+. I think you can control the current manually from the front panel - I forget - too many versions out there! Some versions you can, some you can't. If you do adjust the current you have to do a SAVE or else the value resets on power cycle.

Share this post


Link to post
Share on other sites

That z endstop seems wrong. Looks like a z endstop that umo (not umo+) uses on the bottom z. The umo+ endstop (top one) it's a bit larger.

I say this because one of my umo+ assembled it using the endstops kit from ultimaker and that kit has 2 black endstops, one shorter and one larger. Te sorter one (looks like yours) gived me the same error of missing to contact the wood. The fix for me was using the good endstop. I'll show you a photo of the shorter one and the correct one. If that's so I would contact me dealer so they change that peace.

Share this post


Link to post
Share on other sites

That z endstop seems wrong. Looks like a z endstop that umo (not umo+) uses on the bottom z. The umo+ endstop (top one) it's a bit larger.

I say this because one of my umo+ assembled it using the endstops kit from ultimaker and that kit has 2 black endstops, one shorter and one larger. Te sorter one (looks like yours) gived me the same error of missing to contact the wood. The fix for me was using the good endstop. I'll show you a photo of the shorter one and the correct one. If that's so I would contact me dealer so they change that peace.

 

Ohhh I see! Although, I got all short ones in the UMO+ kit I bought.

Might try to find parts locally. I bought my UMO+ while at UK and just shipped it home after my studies.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!