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Posted · Nozzle Offset Probe Failed

Hi Community,

 

My Ultimaker S5 often shows the attached error message when starting a print job.

When restarting a print job, the printer works fine.

How do I prevent this message from appearing?

 

Best Regards,

Flemming Lassen Nielsen

IMG_20210111_082113.jpg

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    Posted · Nozzle Offset Probe Failed

    I'm actually having the same problem since updating to firmware 5.8.2.  In my case, I manually leveled the bed as a first step before calibrating X and Y (shapes were just ever so slight askew).  I printed a small cube to see if this helped any (not that I expected it would).  Before calibrating X and Y, I updated my firmware.  Now I get this same error.  Tried swapping out print cores, but to no avail.

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    Posted · Nozzle Offset Probe Failed

    Hi @flnielsen,

     

    This error mean that there is to "much" difference between the two nozzles height when touching the bed, normally this difference is 3 mm and there is a value + or - 0.XX mm, that'll give this error. ( I do not know this limit).

    This system is made to avoid the most common problem "all" of us faced sometimes.. Yes good bed leveling and proper bed adhesion.

     

    1) Dirty surface on the bed, this might result in error when the core no2 awaiting the raising "dirty bed". (Distance to hi.)

    2) Did you calibrate the Nozzle switch position? The micro switches wear (home position may differ just a little)  -and also the shift mechanism in the head..

    3) How much wear does the core1 have, as high hour in use -or use of abrasive filament..

    4) Is the front cover sitting properly, no play? The shielding is also an active part of the capacitive sensor, so it can easily fail by using electronics creating strong EMF radiation.. Keep cellphone and other electronics away during aut. level proc.

    5) If one of the wires attached to the captive sensor come loose, intermittent connection. The red and withe wires connected to this sensor.

     

    Here is the calibration procedure for the Core switch:

    https://support.ultimaker.com/hc/en-us/articles/360011545039-How-to-calibrate-the-Lift-switch-on-the-Ultimaker-S5

     

    So, as you see, here's lots of mechanical issues that can trigger this error.

    Also, later software update might revise limits etc., -so proper calibration might be the key.

     

    (aut -automatic)

    (proc- procedure)

     

    Well, good luck.

     

    Thanks

    Torgeir

     

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    Posted · Nozzle Offset Probe Failed

    Hi Torgeir,

    Thank you for your suggestions.

    I have chosen to calibrate the core switch. I hope that this will help.

     

    I must admit that especially core 1 has printed A LOT of models.

    How many working hours should I expect from these cores?

     

    Best Regards,

    Flemming Lassen Nielsen

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    Posted (edited) · Nozzle Offset Probe Failed

    Hi Flemming,

     

    How many working hours should I expect from these cores?

     

    This is not easy to answer for sure. I've seen all kind of different "max working life" for those cores..

    Worst case, here printing abrasive filament using special cores for this ~1000 hour using ~ (8-10)Kg filaments..   Edit: The above is about third party abrasive nozzles found around.

     

    Ultimaker also have an abrasive core CC red 0.6 mm, -"super wear resistant" ruby nozzle.  

    This is the nozzle made with boron carbide tip. I'll think Anders Olsson from Sweeden is behind this design. I've seen some report that this nozzle have been printing 25 Kg of abrasive filament without sign of wear. People have reported "heavily wear" using normal AA core printing with just a small amount of abrasive filament.

     

    Worth to remember, -the print cores is to be considered as consumables.

     

    Best case, using "normal" filaments >(2000-4000) hour depending of temperature and cycling (nozzle).

     

    All this is based on the reports in here, so I'll think this is realistic and make sense.

     

    From a technical point of view, -the core mounted in slot 1 will in general last longer than the one mounted in slot 2..  (For sure, if it always go to this slot 1.)

    Because it is not switched up and down, -as core 2 must do in order to work..

    So, monochrome printing is always best to print  with core 1/slot 1.

     

    Maybe worth mention here is that each core have it own "hour counter" on the core's PCB/contact plate.

    This info can be seen using printers menu, "settings" then to "About this printer".

     

    Info in here is:

    Print core Serial number:

    Time Hot:

    Material amount:

    Max. Temperature:

     

    Thanks

    Torgeir

     

     

     

     

     

    Edited by Torgeir
    Added info and spelling.
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    Posted · Nozzle Offset Probe Failed

    As it turns out, the lift switch was the answer to my trouble.  After recalibrating that, I can now do the XY calibration and everything is right as rain.

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    Posted · Nozzle Offset Probe Failed

    Thanks.

     

    Glad I could help you.

     

    Torgeir

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    Posted · Nozzle Offset Probe Failed

    Hi Torgeir,

     

    Thanks for the tip. My cores have worked for 61 and 56 days (1464 and 1344 hours).

     

    If the nozzle switch calibration doesn't seem to fix the problem, I think that it's time to exchange the nozzles.

     

    Best Regards,

    Flemming.

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    Posted (edited) · Nozzle Offset Probe Failed

    Hi Flemming,

     

    Yes, a worn (out) nozzle should detect too little difference between the two nozzles, but to be honest I've never seen any info about this issue herein. But in theory this fall within "nozzle offset"  error.

     

    Thanks

    Torgeir

    Edited by Torgeir
    Text error.
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