ABB i-bus FCC/S 1 1 Series Product Manual page 211

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ABB i-bus KNX
Parameters
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7.5.1.9.1.1.3.4.3 Dependent Parameter
Input for temperature limit sensor
Options:
• Via group object: The temperature value is received via a dedicated group object. The depen-
dent Additional-stage cooling limit temperature group object is enabled.
• Via physical device input x: The temperature value is acquired via a temperature sensor con-
nected (to the selected input).
A temperature sensor must be actually connected to the temperature input selected and the input
for the sensor must have been correctly parameterized, otherwise the limit temperature function
does not work.
If one of the device inputs is selected here as the input for the limit temperature, this input is no
longer used to acquire the room temperature. It is therefore not possible to use the same temper-
ature sensor for the measurement of the room temperature and for the measurement of the limit
temperature.
7.5.1.9.1.2 PI continuous (0...100 %); PI PWM (On/Off), PI continuous (0...100 %) for Fan Coil
The following parameters are enabled if the PI continuous (0...100 %), PI PWM (On/Off) or PI con-
tinuous (0...100 %) for Fan Coil option has been selected in the Additional-stage cooling control
value type parameter.
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7.5.1.9.1.2.1 Dependent Parameter
Temperature difference from basic-stage cooling
Options:
The temperature difference from basic-stage cooling specifies the value from which or up to which
the additional-stage cooling is to be active. If the actual temperature is below the setpoint tempera-
ture by the value selected here, the additional stage is active.
This action occurs both if the actual temperature drops below the threshold and if it is already be-
low the threshold.
Example 1:
Temperature difference from basic-stage cooling: 2 K
Setpoint temperature: 23 °C
Actual temperature: 27 °C
Additional stage is active until the actual temperature reaches 25 °C.
Example 2:
Temperature difference from basic-stage cooling: 2 K
Setpoint temperature: 23 °C
Actual temperature: 24 °C
Additional stage is inactive as long as the actual temperature is above 25 °C.
Via group object
Via physical device input a
Via physical device input b
Via physical device input c
Via physical device input d
Note
00.0...02.0...25.5
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 211