39
5 - Automatic tuning
The self-learning
Adaptive Tuning
is not intrusive. It doesn’t affect the
process, at all, during the phase of
calculation of the optimal terms
parameters.
It is particularly suitable for con-
trolling process whose control
characteristics change with
time or are not linear in relation
to the Setpoint values.
It doesn’t require any operation by
the user. It is simple and works fine:
it samples continuously the
process response to the various
perturbations, determining the fre-
quency and the amplitude of the
signals. On the basis of this data
and their statistical values, stored
in the instrument, it modifies auto-
matically the PID term parameters.
It is the ideal for all applications
where it is required to change con-
Perturbation
New
parameters
Continuous
Adaptive Tuning
tinuously the PID terms parame-
ters, in order to adjust the PID to
the changes of the process
dynamic conditions.
In case of power off with the
Adaptive Tuning enabled, the
values of the PID terms para-
meters are lost. At the power on
the Adaptive Tuning starts auto-
matically and computes again
the values of the PID terms para-
meters.
275..0
274.8
Adpt
stop
Adpt
strt
tune
Stop
Operator
mode
press until
press
è
To start
select
strt
To stop
select
stop
M4UK.ed6 20-05-2005 11:43 Pagina 39
