ABB i-bus KNX Product Manual page 64

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ABB i-bus KNX
Parameters
7.4.1.6 —
Dependent parameter
Temperature input
This parameter is not visible if the Channel function parameter has been parameterized with the
Actuator channel option.
Options:
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 object(s).
The temperature can then be measured in a different device and transmitted to the device 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, Weighting of internal measurement
and Weighting of external measurement 1 appear.
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 controller
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.
62 2CDC508220D0211 Rev. A | VC/S 4.x.1
Via physical device input
Via group object
Via phys. device input and group object
Note