PID Tuning - Thermal Runaway Error

Using our powerful Radial Material cooler may cause the Heatblock to over-cool and you will get a Thermal Runanway Error message when printing. This is because of incorrect PID tuning.

We recommend you to let the material cooler run at 70-85% instead of 100%, otherwise it may cool too much and the adhesion between the layers will decrease. You can then increase performance to 100% when printing overhangs or when printing small parts at high speeds.

To adjust the extruder values, use Pronterface to enter the following commands:

Now you wait until your console displays a message with the determined values ​​like this:

Now you store the determined values ​​(Kp, Ki, Kd) in the EPROM with the following commands:

Now the temperatures should remain constant during the print. If you print with a material at very different temperatures and fan speeds,  it may be necessary to adjust the PID tuning to these values.

Of course you can also change these values ​​in your firmware (Configuration.h):

#define DEFAULT_Kp 19.56
#define DEFAULT_Ki 1.48
#define DEFAULT_Kd 64.72