Temperature Controller - Staveb AG

3-20 Configuration and Basic OperationExample Operation Procedure — Execute Auto-Tuning (AT)1. Press the key for less than 1 second to move from the Operationfunction group to the Adjustment function group.Figure 3.33Adjustment function groupAT execute/cancel2. Press the U key to start execution of AT. on is displayed during ATexecution.Figure 3.343. off is displayed when AT ends.Figure 3.354. To return to the Operation function group, press the key.Figure 3.36Operation function groupPVNote: The newly configured value or parameter is loaded into controllermemory if you do not operate any key on the front panel for at least 2 secondsor by pressing the or M key.Note: When control characteristics are already known, either from experienceor from a previous AT cycle, the PID parameters can be configured directlyfrom the keypad to adjust control. PID parameter values are set in theProportional Band (P), Integral Time (I), and Derivative Time (D) parametersin the Adjustment function group.ST (Self-Tuning)Figure 3.37In the ST (self-tuning) function, the controller executes its tuning processfrom the start of program execution to calculate PID constants matched to theactual control target.Publication 900-UM003C-EN-E - January 2004