Auto-tuning

The control parameter are automatically optimized after a modification in the temperature control circuit has been detected or when faulty control behavior is detected. The most important features of good control behavior are a minimal control deviation between the set value and the actual value, good fault behavior without overshadowing, and rapid adjustment. Manual setting of the control parameters is normally not necessary.

Temperature fluctuations may occur while the controller is being optimized. Auto-tuning is shown by the "AT" (Auto-Tuning) symbol on the basic screen. If the cooling capacity or heating capacity is not sufficient to auto-tuning, this is canceled after 15 minutes at the latest.

Controller mode

Manual	The control parameter are set manual by the operator. The Controller can be optimized for a specific application by manual setting. If the application is modification (temperature, flow rate, control circuit), the setting of the control parameter may have to be adjusted again. With this setting, there is no automatic auto-tuning! NOTE! Manual setting requires appropriate control knowledge.
Automatically	The control parameter are setting automatically after auto-tuning. When the application is modification (temperature, flow rate, control circuit), this setting automatically auto-tuning!

Manual perform auto-tuning

In exceptional cases (control behavior is not satisfactory), it is recommended to carry out auto-tuning.

1. Select [Setting] > [Temperature Control] > [auto-tuning].
2. Tap on the start symbol () to start the process.
   → The control parameter are automatically recalculated ().
   → After auto-tuning is complete, the symbol changes back to ().

NOTE!

If, despite the optimization carried out, the control behavior is insufficient, please contact your HB-Therm country representative.