Temperature Controller - Staveb AG

3-18 Configuration and Basic Operation1. Press the key for at least 3 seconds to move from the Operationfunction group to the Initial Setting function group.Figure 3.26Operation function groupPV2. Display the Input Type parameter in the Initial Setting function group.Figure 3.27Initial setting function groupInput type3. Select the PID/ON/OFF parameter by pressing the M key.Figure 3.28PID/ON/OFF4. Check that the configured control method parameter is onof. Note:The default is ON/OFF.5. To return to the Operation function group, press the key for at least1 second.Determining PID Constants(AT, ST, Manual Setup)AT (Auto-Tuning)Figure 3.29OverviewWhen you configure the controller to execute auto-tuning, the optimum PIDconstants for the current set point during program execution are automaticallyset by the controller forcibly changing the manipulated variable (MV) tocalculate the characteristics (called the limit cycle method) of the controltarget.To initiate AT (auto-tuning), specify on: AT execute, and to cancel AT(auto-tuning), specify off: AT cancel.Note: AT (auto-tuning) cannot be executed during ON/OFF control orSTOP.Publication 900-UM003C-EN-E - January 2004