DYZE-DESIGN TYPHOON HOT-END CONFIG

sozkan

Hello All,
Dyze-Design typhoon hot-end brief info:
I had a very difficult time getting it to work Dyze-Design typhoon hot-end.
The heating block long and high-density plastic extrusion capacity one of the highest in the range. IT can extrude 1 kg per hour, heating up to 480 celsius with no problem. The heating block contains two individual heaters and two sensors to maintain the temperature on the long tube.

The problems we faced in the beginning:
Therefore complication starts.

The auto-tuning algorithm in the Duet firmware ( as far as I know) was designed only for one hot end at once. However, since both heaters on the same block and influence each other and each successful tuning does not work since they fired at the same time.
Due to the design and necessity, both heaters have different heating power rates and block heating resistances on the connecting region. For example, heating 1 starts faster, and incrementing above heater 2, and therefore failed.
Once one of the heaters reaches the threshold, the machine starts printing even the second one is not yet reach the target.
Ultra-fast heating even after cut-off above 15 celsius and errors.

The solution for now temporarily:
Suggestion by David(@dc42)
Tuning those coupled heaters may work better using the following procedure;

Set the M570 limits for those heaters very high.
Find some parameters that allow you to heat both heaters at once to the target temperature.
With heater #1 at its normal operating temperature, tune heater #2 with the target temperature equal to its normal operating temperature.
Now set heater #2 to its normal operating temperature and tune heater #1.
If you continue to get "Temperature rising too slowly" errors, the fix is to reduce the gain or heating rate parameter. That's the M307 R parameter in 3.2RC1 and later.

Therefore I have found the parameters as advised:

I have set M570 on the S parameter at 240 ( position in the config after the M307 and M950 parameters.
I have set the M307 parameters;

M307 H1 A550 C180 D2.0 S0.35 V24.3 B0
M307 H2 A550 C239 D2.7 S0.5 V24.3 B0

You may see the different S parameters which are PWM settings.

In conclusion; I realize the present Reprap time and delay-dependent on algorithms are not really efficient, some cases not sufficient too, especially for the industry and advanced systems like the Dyze-Design Typhoon hot-ends.

Because the heating material is not gained temperature linear in time. If you measure the temperature peak after the cut-off, the difference between peak and cut-off should be the main value of concentration. If the peak temperature above the target range, cut-in temperature could be reduced, or if the cut is below the target range reduces the PWM and increase the cut-in temperature just equal to or above the cut-in.
Therefore, by implementing this main opportunity;

Dynamic PID tuning in a reliable way.
Ambient temperature changes do not influence the stability of extrusion
material flow increases and the reduction will not negatively impact the extrusion.
Advanced heater like the multiple sensors and heating blocks calibration fast and reliable way.
Different temperatures rated products melting auto-tuning in realtime.

I believe I know the way it should be, If you like, please guide or contribute that we achieve success.
Kind Regards
Serkan

djstree

@sozkan Hi! Would you say the above applies to v3.4.5 ?