Operating instructions

3. Confirm with the OK button.

Selection of the menu item Tv manual/auto activates
manual or automatic adjustment of the parameters
depending on the previous setting. An input window is
displayed when the other menu items are selected. The
respective value can be adjusted within the displayed
limits.
4. Adjust the value accordingly.
5. Confirm with the OK button.
6.10.5 Overview of external control parameters
 The external control consists of a master controller (external
controller) and a slave controller (internal controller). The tem-
perature of the consumer to be temperature-controlled is also
required. In general, this is determined with an external "Pt100
sensor".
 The master controller compares the setpoint value with the
external temperature (consumer temperature) and calculates
the setpoint value (setpoint_internal) for the slave controller
(internal controller) from this.
 The slave controller compares the setpoint value (set-
point_internal) 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
master controller (external controller):
Parameter Description Unit
Kpe Gain -
Tne Reset time s
Tve Lead time s
Tde Damping time s
Prop_E Proportional range K
The following control parameters can be adjusted for the
slave controller (internal controller):
Parameter Description Unit
Xpf Proportional range K
If Tv manual/auto
is set to auto , Tve and Tde cannot
be changed. In this case, they are derived with fixed
factors from Tne.
Fig. 39: Specifying internal control
parameters
Operation
Variocool 53