Overview Of Control Parameters; Editing Control Parameters - Lauda LOOP 100 Operation Manual

Fig. 15: Control parameters Tn and Tv too
large
5.10.2

Overview of control parameters

5.10.3

Editing control parameters

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The actual value increases relatively sharply towards the specified target
value. The proportional area settings seem to be correct. If the control devia-
tion becomes smaller, the actual value approaches the target value much
more slowly. The integration component (I-component) must compensate
for the drastic reduction of the proportional component (P-component). In
this case, the I component is integrated too slowly. The parameter Tn, which
specifies the integration interval, must therefore be reduced. The hold-back
time (parameter Tv) should be adapted using the formula: Tv = Tn x 0.75.
The internal control compares the set temperature T
perature T and calculates the actuating signal, i.e. the measurement used
int
for heating or cooling.
Designation
Proportional range
Adjustment time
Hold-back time
Attenuation time
If Tv manual/auto is set to auto , Tv and Td cannot be modified. In
this case, they are derived with fixed factors of Tn.
The following parameters may also influence the control:
Temperature limits: Til and Tih

The [Tv man/auto] menu item allows you to define whether the control
parameters [Tv] and [Td] are adapted manually or configured automatically. If
the automatic setting is enabled, both control parameters are marked with
the letter "a" and a lock symbol and cannot be selected. In this case, [Tv] and
[Td] are derived with fixed factors of [Tn].
1. Press the desired operating button.
2.
Select the Menu  Setup  Control  Control parameter menu items.
3. Select the control parameter that you want to change.
An input window appears. A value can be entered within the limit

values displayed.
4. Press [OK] to confirm the entry.
LOOP
with the bath tem-
set
Abbreviation Unit
Xp K
Tn s
Tv s
Td s
V3