Operating instructions

6.10.3 Overview of internal control parameters
The internal control compares the setpoint value with the outlet
temperature and calculates the control value, i.e. the amount to be
heated or cooled.
The following control parameters can be adjusted for the
internal control:
Parameter Description Unit
Xp Proportional range K
Tn Reset time s
Tv Lead time s
Td Damping time s
If Tv manual/auto
is set to auto , Tv and Td cannot be
changed. In this case, they are derived with fixed factors
from Tn.
The temperature limits Tih and Til also influence the
control.
6.10.4 Adjusting internal control parameters
Personnel:

Operating personnel
1.
Select the menu item Control parameter  intern Pt1000 in
the Control menu.
2. Select one of the following options:
 You can select any of the listed control parameters.
 With Tv manual/auto , you can define whether the control
parameters Tv
and Td are set manually or automati-
cally. If the automatic setting is active, both control
parameters are displayed with a padlock and cannot be
selected. In this case, they are derived with fixed factors
from Tn .
Fig. 38: Internal control parameter
menu
Operation
Variocool 52