Overview Of External Control Parameters - Lauda IN 130 T Operation Manual

5.8.3 Overview of external control parameters

Correction limitation
V6
External control consists of a master controller (external controller) and
n
a slave controller (internal controller). The temperature of the consumer
to be temperature controlled is also required. In general this is deter-
mined with an external "Pt100 sensor".
The master controller compares the set temperature with the external
n
temperature (consumer temperature) and, from these temperatures,
calculates the set temperature (set_internal) for the slave controller
(internal controller).
The slave controller compares the set temperature (set_internal) with
n
the outflow temperature and calculates the actuating signal, i.e. the
measurement used for heating or cooling.
Table 33: The following control parameters can be adapted on the master
controller (external controller):
Characteristics
Prop_E
Table 34: The following control parameters can be adapted on the slave
controller (internal controller):
Characteristics
If a temperature jump is specified via set temperature T
set an outflow temperature which is considerably higher (e.g. 50 K, possible
problem with enamel reactors) than the temperature T
external application. Therefore, there is a correction limitation that specifies
the maximum permitted deviation between the temperature at the outflow
T and the temperature in the external consumer T
int
1. Press the [Enter key] to open the menu.
2.
Select the menu items  Setup  Control  Correction limit..

Integral Process Thermostats and High-Temperature Thermostats
Designation
Kpe Amplification factor
Tne Adjustment time
Tve Hold-back time
Tde Attenuation time
Proportional range
Designation
Xpf Proportional range
If Tv manual/auto is set to auto , Tv and Tde cannot be modified. In
this case, they are derived with fixed factors of Tne.
The temperature limits Tih and Til also have an effect on the
control.
An entry window opens for the numerical value.
Unit
-
s
s
s
K
Unit
K
, the control may
set
required in the
ext
.
ext
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