3.6 Setting the Configuration Chapter 3: Configuration
146 493-0736-11 (6-2)
The Autotuner even incorporates a form of intelligence. In situations where the D
element should not be used, for example in level control, the Autotuner
automatically identifies the process and eliminates the D element.
Figure 50 Autotuner Block Diagram.
The Autotuner block holds four parameters – Mode, FirstStep,
ControllerDynamics and Reset.
The parameter Mode switches Autotuning Off or On.
The parameter FirstStep defines the maximum size of the first step in the
Autotuning process.
The parameter ControllerDynamics is used to specify the control process used.
When the Reset parameter is set to OK the internal parameters for the Autotuner
function are reset.
Table 108 Autotuner Parameters.
Parameters
Name Setting Unit
Mode Off, On none
FirstStep 3, 5, 10 %
ControllerDynamics Normal, DeadTime, PI, pPI none
Reset OK none
Process
SP
PV
PID
Tune
–1
Autotuner
Σ
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