HE
55
9.5.2. SELFTUNING
Selftuning:
When performing a selftuning for the controlled system (temperature
application system), the control parameters Xp, Tn and Tv are
automatically determined and stored.
Possible parameters:
OFF - no selftuning
The control parameters ascertained during the last identification are
used for control purposes.
ONCE - single selftuning (factory setting)
The instrument performs a single selftuning of the controlled system
after each start with the key or after receiving a start
command via the interface.
ALWAYS - continual selftuning
The instrument performs a selftuning of the controlled system
whenever a new setpoint is to be reached.
Use this setting only when the temperature application system
changes permanently.
9.5.3. Dynamic internal
°C
t
PER
NORM
Setpoint
temp. stability
°C
t
PER
NORM
temperature ramp
temp. stability
This parameter affects the temperature sequence only in
case of internal control.
Factory setting: APER (aperiodic)
Possible parameters:
NORM Allows for reaching the setpoint faster – with
setpoint change or ramp function – but
overshooting of up to 5 % is possible.
APER Ramp function: the increase of temperature
occurs temporally offset and achieves the
target temperature without overshooting.
Setpoint change: The temperature increases at
the same rate, the target temperature is
achieved without overshooting.
L With both settings constant temperature is achieved
after approximately the same time.
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