Jump to content
UltiMaker Community of 3D Printing Experts

Heating up but no printing movements


dnaba559
 Share

Recommended Posts

Posted · Heating up but no printing movements

Dear all,

I have an issue which I've been trying to resolve for ages. I've replaced almost every part trying to troubleshoot this one, but no luck so far.

The problem is, that my UM1 heats up, but the temperature curve is pretty jumpy (not as smooth as it used to be in the early days). When it reaches the target temperature it fluctuates around it but the printing process doesn't start. I've tried homing and jogging, both works fine. I tested each stepper driver outside of UM, all of them work fine. I've replaced the thermocouple amplifier unit. I've tried the old Cura. Even bought a new heater and thermocouple (will test it today). But I somehow het the feeling that the problem is with the electronics. I'm really close of throwing the whole thing out of the window, so if you have any hints, please let me know :-P

regards,

D

 

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    first tip !... dont through your UM1 out the window... then it is harder to fix !! BELIEVE ME ! :wink:

    Secondly.. try the new heating cartridge, make sure it and the new temp sensor are really nice and tight in the alu block.. they should not be able to slide around or move !

    Then if that does not work.. check your cable connections and also check the electronics board... sometimes with time.. a smaller soldiering connection on the board can snap... and then game over... have a good close look and even better take some sharp photos and show us.

    I know there are some experts on the electronis here that have eagle eyes !!

    Ian :smile:

     

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    Hi Ian,

    Thanks for your response. I will check with a new heating cartridge and then check the soldering.

    I have now also checked with a marlin firmware and pronterface, but the same issue keeps showing up: heating up with a volatile temperature of -/+ 5 degree fluctuation to the target temp, where it remains but no printing movements occur ...so software or firmware errors can be excluded i guess...

    I will post some pics of the electronics. Any help much appreciated!

    Rgds

    D

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    If you have excessive insulation between the heater and the thermocouple you should get a repeating cycle - like a sine wave.

    If instead you have a bad connection it should be more random and erratic.

    First of all - know that you can set the temp to 0 in cura, then set the temp manually on the ulticontroller (or in cura print window) and then it will print the moment you tell it to - not when it reaches temperature.

    The most common problem with temperature is a bad wire near the top of the print head. This is evident because if you push the print head to the 4 corners while hot it will get a mintemp or maxtemp error. But it sounds like you have a different problem. It sounds like your PID settings are off.

    Did you recently change the Marlin firmware or recently recalculate the PID values?

     

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    Hi gr5,

    Thanks for the tip. I've set the temperature to 0 and tried a print - and there it was! The printing movement started. However, as soon as I set the temperature above 0, e.g. to 20 degrees, the printing process does not start after reaching the target temperature.

    I have checked the wiring of the cartridge, looks absolutely fine. The temperature curve still looks random and erratic when heating up and still randomly fluctuates around the target temperature with ca. +/-5 degrees.

    Regarding the Marlin firmware: I did not play with the PID values. I have simply upgraded the firmware via Cura. I also tried to print via Pronterface - with the same disappointing result.

    As the printer movement appears with 0 degree target temp, but does not appear with any temperature higher than 0, it seems to me as if signal to start the print movement when target temperature is reached, is not send or not received properly somewhere whithin the system. Does someone has any ideas about the cause of such an error?

    Thanks in advance,

    Rgds

    D

     

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    Found the issue. Arduino was the problem. Even though I could not find any mechanical damage on the arduino board, it somehow caused the jumpy temperature reading and it prevented the UM from printing when it hit the target temperature. Since the arduino is not soldered onto the electronics, it can be easily replaced. Thanks for the support - hope someone will read this if he has a similar problem.

    rgds

    D

     

  • Link to post
    Share on other sites

    Posted · Heating up but no printing movements

    Usually the problem is in the wiring at the test head but I'm glad you got it working.

    FYI - if the temp is anything other than 0, printing doesn't start until the temperature is "stable". In your case it never got stable.

     

  • 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
     Share

    • Our picks

      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
         
         
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
         
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
         
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
         

         
        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 10 replies
      • UltiMaker Cura 5.3.0-Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
         
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
        • 16 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Thanks
        • 14 replies
    ×
    ×
    • Create New...