Help PID tuning Dyzend Pro

chris974M

Auto tune cancelled because starting temperature is not stable

chris974M

11/10/2020 à 22:17:47 Auto tune phase 3, peak temperature was 251.1
11/10/2020 à 22:17:19 Auto tune phase 2, heater off
11/10/2020 à 22:16:07 Auto tune phase 1, heater on
11/10/2020 à 22:16:02 M303 H1 S220 C8
Auto tuning heater 1 using target temperature 220.0°C and PWM 1.00 - do not leave printer unattended

chris974M

M307 H1
Heater 1 model: gain 545.5, time constant 191.5, dead time 18.0, max PWM 1.00, calibration voltage 24.1, mode PID
Computed PID parameters for setpoint change: P3.5, I0.059, D43.9
Computed PID parameters for load change: P3.5, I0.094, D43.9

chris974M

nobody for helping please

Phaedrux

Is auto tuning successful? Are you starting from room temperature?

How did you save the resulting values? Sending M500 saves them to config-override.g and M501 at the end of config.g loads them.

FBG

@chris974M said in Dyzend Pro:

Dyze donne sur son site
Thermistance 500 ° C Thermorétractable noir
#Modification du fichier config.g
Recherchez les paramètres suivants et remplacez les valeurs:

The problem is the heater, not use 50w. Use 40w or 30w

chris974M

Oui auto tuning ok apres autotun. M500 il enregistre bien dans config-override.g

chris974M

@FBG comment changer cela

chris974M

@Phaedrux
12/10/2020 à 22:00:22 Auto tune cancelled because starting temperature is not stable
12/10/2020 à 22:00:02 M303 H1 S220
Auto tuning heater 1 using target temperature 220.0°C and PWM 0.50 - do not leave printer unattended

Phaedrux

@chris974M said in Dyzend Pro:

Oui auto tuning ok apres autotun. M500 il enregistre bien dans config-override.g

@chris974M said in Dyzend Pro:

@Phaedrux
12/10/2020 à 22:00:22 Auto tune cancelled because starting temperature is not stable
12/10/2020 à 22:00:02 M303 H1 S220
Auto tuning heater 1 using target temperature 220.0°C and PWM 0.50 - do not leave printer unattended

Does it work, or does it not work?

chris974M

now does it not work

chris974M

Auto tune cancelled because starting temperature is not stable

Phaedrux

I suspect that's because the high temp thermistor is less accurate at low temps. You could try preheating it a bit before starting the tuning process.

chris974M

@Phaedrux OK i try

chris974M

12/10/2020 à 22:41:21 Auto tune phase 1, heater on

12/10/2020 à 22:41:15 M303 H1 S220
Auto tuning heater 1 using target temperature 220.0°C and PWM 0.50 - do not leave printer unattended

chris974M

12/10/2020 à 22:48:39 Auto tune heater 1 completed in 443 sec
Use M307 H1 to see the result, or M500 to save the result in config-override.g
12/10/2020 à 22:44:26 Auto tune phase 3, peak temperature was 229.7
12/10/2020 à 22:44:03 Auto tune phase 2, heater off

chris974M

Now i execut the command M500 and M501

chris974M

Toujours des fluctuation de temp

Phaedrux

Ok if that successfully worked you can do as DC42 said above and edit the resulting M307 command in config-overide to increase the D value.

If you have already run heater tuning and copied the resulting values into your M307 H1 command in config.g, increase the D parameter in that command until the temperature is stable when the print head is not moving. Try increasing it by 30% initially.

chris974M

Ok je vais essayer sa