PID Tuning Questions
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I have a new original Titan Aero on my Hypercube Evolution and wanted to PID tune it properly. I started the PID Tuning with this command:
M303 H1 S250 C8 ( I used S250 instead the E3D Wiki Value of 285, I was afraid to damage the thermistor)
After a while it gave me the following results:
M307 H1
Heater 1 model: gain 436.7, time constant 230.1, dead time 4.0, max PWM 1.00, mode: PID
Computed PID parameters for setpoint change: P23.5, I0.102, D65.8
Computed PID parameters for load change: P23.5, I1.866, D65.8Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 461C.
Auto tune heater 1 completed in 384 secNow which of the values to put in the config.g? The setpoint or the load change? I DID put this line, but did not try it out yet:
M301 H1 P23.5, I1.866, D65.8 T0.50 S1.0
I did not fully understand the T and the W parameter, for what is it exactly?
Thanks in advance
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have a read of https://duet3d.com/wiki/Tuning_the_heater_temperature_control about halfway down the page shows you what you need to put where and you dont need M301 line as you have it but would use the M307 after it
HTH
Doug
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in fact I think you need to add
M307 H0 A436.7 C230.1 D4 B0
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Alright, thanks, so I do not need any M301 line at all? It is in the config commented out, so I was wondering…
I only need to put the 307 line then?
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Yes. The PID parameters are calculated from the M307 heater model parameters.
