Chapter 3: Configuration 3.6 Setting the Configuration
493-0736-11 (6-2) 151
Note: If the controller is to be connected to another control circuit you must reset
the Autotuner so that the controller retains its old PID parameters but at the next
autotuning the memory is cleared ready for a completely new process with
different characteristics.
Figure 53 Autotuning Graphs Showing SP and PV During Output Signal Changes.
Adapt
Adaptive control automatically alters the PID parameters if the process changes.
The pPI controller cannot be used with adaptive control.
The Adapt block contains four parameters – Mode, Critical Gain, Critical Period
and Reset.
The parameter Mode sets the adapt function On or Off.
The parameters Critical Gain and Critical Period are usually determined by the
Autotuner, and are used by the adaption algorithm as starting values for the
adaptive control.
Output
Set Point
Process
Va lu e
Available in
ECA06 ECA60 ECA600 EMA60
--X-
To Next Page
Loading...
