Jump to content
Ultimaker Community of 3D Printing Experts

Tevo Tornado Temperature overshoots


Recommended Posts

Posted · Tevo Tornado Temperature overshoots

I recently replaced the heating cartridge in my Tevo Tornado with a 24V heating cartridge and now when i try heating it the temperature jumps to at least 40 degrees above what I set it. Then throughout the print the temperature will fluctuate at least ten degrees any ideas?

     I understand this is probably not the best place to ask seeing as my printer isnt made by ultimaker but ive searched for hours trying to find a solution and i cant find one anywhere.

any help is appreciated! Thank you in advance!

  • Link to post
    Share on other sites
    Posted · Tevo Tornado Temperature overshoots

    Maybe the heater is too powerfull, or has a too big stored heat capacity, so it jumps over the set value? Or the sensor is too far away from the heater, so it senses the temperature changes way too late? Or the thermal connection between heater and sensor is not good enough (maybe try copper paste or the white paste like in CPU's for better contact)? Or something else along this line of thinking?

     

  • Link to post
    Share on other sites
    Posted · Tevo Tornado Temperature overshoots

    Im using the right voltage (24v) heater. what do you mean has a too big stored heat capacity? could the sensor be the problem seeing as ive replaces the thermistor as well? and even prior to replacing it it was jumping over the temperature.

  • Link to post
    Share on other sites
    Posted · Tevo Tornado Temperature overshoots
    16 hours ago, willbill said:

    ... what do you mean has a too big stored heat capacity? could the sensor be the problem seeing as ive replaces the thermistor as well? and even prior to replacing it it was jumping over the temperature.

    I don't know the technical name for this in English. What I mean is that at the moment at which the outside of the heater reaches its temperature, inside there could already be so much more heat accumulated, that even when switched off, this heat when traveling towards the edge makes the temperature overshoot. This is also a common problem in heating systems in homes. If the heater shuts off at the desired temp of 20°C, then there might still be so much hot water in the pipes and radiator that it overshoots. Or the thermostat might be in a location too far away from the radiator, so it doesn't sense the changes fast enough. This could also happen in 3D-printers if the heater is too powerfull, and/or the sensor too far away from the heater, or if the sensor has bad thermal contact. Further, you should also look at the Watt of the heater (not only the voltage), if that Watt is according to specs? Because that is what determines the heating. A 24V, 25W heater will generate far less heat than a 24V, 100W heater. If the system was designed for the first, then the latter will cause overshoots. I am not saying this is the cause in your system (which I don't know), but it is one of the many possibilities.

     

    It could of course also be the sensor itself: wrong type of sensor, poor batch, poor thermal contact with the heater block, bad electrical contact. Or it could be the hardware- or software-settings that do the regulation: too much or not enough amplification. Like when turning a car into a corner, and correcting the turn: you could correct too much and start to zigzag, or correct not enough and go off the road. The correction has to be the exact right amount. In turning it is the driver, the "software", that is the problem, not the car.

     

    But I don't know any real practical values, that is something you should ask the developers of the printer.

     

  • 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

      • Talking additive | The 3D printing podcast
        Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
          • Like
        • 3 replies
      • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
        Save your seat for either broadcast on September 23.
        What will you learn?
        · Best practices for iterative print preparation and every lesson you should learn from each print
        · The right way to use per-object settings and when they are most useful
        · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
        · How to optimize print profile settings and whether to “keep” or “discard” changes
        · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
        · And a whole lot more tips and tricks!
         
        How can I join?
        This free masterclass will take place twice:
        1. 11am CEST (5pm SGT, 5am EDT)
        2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
          • Like
        • 0 replies
      • Do you use 3D printing at work? Let us know
        It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
        • 1 reply
    ×
    ×
    • Create New...