ABB i-bus
®
KNX
Parameters
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 137
7.4.1.2.1.1.14
—
Dependent Parameter
Temperature input
This parameter is not visible if the
Device function
parameter has been parameterized with the
Ac-
tuator device
option.
Options:
Via physical device input
Via group object
Via phys. device input and group object
This parameter specifies how the integrated controller receives the actual temperature. Because
the controller cannot operate without information on the actual temperature, this parameter cannot
be deactivated.
•
Via physical device input
: If this option is selected, the controller checks which of the physical
device inputs has been parameterized for a temperature sensor. The value measured using this
sensor is taken into account in the control.
The message: Configure in 'Inputs' parameter window appears.
•
Via group object
: If this option is selected, the actual temperature is received via group ob-
ject(s). The temperature can then be measured in a different device and transmitted to the de-
vice via the bus.
The dependent parameter
Number of temperature input objects
is enabled.
•
Via physical device input and group object
: If this option is selected, the controller checks which
of the physical device inputs have been parameterized as a temperature sensor. Temperature
values can also be received via the bus. The values measured on the inputs and received via
the bus are weighted.
The message: Configure in 'Inputs' parameter window appears.
The dependent parameters
Number of temperature input objects
,
Internal measurement
weighting
and
Weighting of external measurement 1
appear.
Note
Only device inputs that have been parameterized as a temperature sensor are detected as such.
If several inputs are parameterized as a temperature sensor, a mean value is formed from the
values measured and this mean value is used as the actual temperature value.
If an option with the physical device inputs has been selected as the temperature input, it is to be
ensured that a temperature sensor is also connected to one of the inputs. Otherwise, the con-
troller changes to a fault mode.
With the aid of the parameters on the type of temperature input and the weighting of the different
inputs, it is possible to represent even more complex room situations. The temperature values can
flow into the calculation with different weightings.
