ABB ECA06 Configuration And Installation page 146

3.6 Setting the Configuration
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
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.
Mode
FirstStep
ControllerDynamics
Reset
Table 108
146
SP
Σ
PID
PV
Autotuner
Autotuner Block Diagram.
Name
Autotuner Parameters.
Tune
–1
Parameters
Off, On
3, 5, 10
Normal, DeadTime, PI, pPI
OK
Chapter 3: Configuration
Process
Setting Unit
none
%
none
none
493-0736-11 (6-2)