The temperature limits Tih and Til also have an eect on the
control.
If a temperature jump is specified via set temperature T
set
, the control may
set an outflow temperature which is considerably higher (e.g. 50 K, possible
problem with enamel reactors) than the temperature T
ext
required in the
external application. Therefore, there is a correction limitation that specifies
the maximum permitted deviation between the temperature at the outflow
T
int
and the temperature in the external consumer T
ext
.
1. Press the [Enter key] to open the menu.
2.
Select the menu items Setup Control Correction limit..
An entry window opens for the numerical value.
3. Enter the value.
4. Confirm the new value with the [Enter key].
The new value has been accepted.
6.11.6 Adjusting external control parameters
Personnel:
n
Operating personnel
1.
Select the menu item Control Parameter extern Pt100 in the Con-
trol menu.
2. Select one of the following options:
n You can select any of the listed control parameters.
n With Tv manual/auto
, you can define whether the control param-
eters Tve , Tde and Prop_E are set manually or automatically.
If the automatic setting is active, both control parameters are
displayed with a lock symbol and cannot be selected. In this case,
Tve and Tde are derived with fixed factors from Tne .
3. Confirm with the ENTER button.
Selection of the menu item Tv manual/auto activates manual or
automatic control depending on the previous setting. An input
window is displayed when the other menu items are selected.
4. Adjust the value accordingly.
5. Confirm with the ENTER button.
Correction limitation
V08Variocool52 / 97
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