problem with RTM tip about rt_soldering_pen HOT 6 OPEN

A friend of mine has also had three or four tips burn up over the past year. The issues I’ve identified with him is that he runs it at 400° Or more all the time to compensate for the (relatively) lower power compared to like an 80W soldering station. I never run mine higher than 400° and haven’t had a problem. I suspect these tips don’t like being run at high temp for long periods of time

from rt_soldering_pen.

RTM tips are very small, there is hard to tune PID regulation loop for all range of tips, for this tiny tip you can try to decrease amplification of all constants in PID (heating.hpp: PID_K_...)

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thanks for fast reply.
most time i use mine at a range of 330°-360°C, for harder soldering jobs i use my 80W station. i´m not really sure constant high temperature was problem of burning my tips, i will try it with the reduced Power (35W) and will see what happens.

what did u mean with "this tiny tip" ? the tips at all or especialy the RTM032S, because the RTM032S is a bit bigger than the RT8MS.
Ok, i tried some diffrent PID vlaues and now i have setting that works for me. I decresse P and I to 350, 300 and increase D to 75. now it needs a bit more time to get stable temperature but the settings works with my old and the new tip. maybe some finetuning is needed to get it works perfect, but for the moment it is ok.

from rt_soldering_pen.

Ah, I'm sorry, RTM032 is bigger, I was wrong with another RTP, which is smaller. but yes, it can help to tune the PID constants.

it will be good idea to make these constants editable from menu for fine-tune

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yes thats a good idea, maybe another good idea is to implement a PID autotune function. i know PID autotune from 3d-printers and that works well. but i dont know it would pe possible to implement it.

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short reply after nearly 2 years, no burned tips again and the "new" PID-settings works well. just at "higher" voltage ( 4s- range) the PID´s do not work perfect but acceptable good.

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