ABB i-bus FCC/S 1 1 Series Product Manual page 338

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ABB i-bus KNX
Group objects
No.
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The group object is enabled if "Deactivated" was not selected for the parameter "Additional-stage cooling" in
the "Application parameters" parameter window.
This group object is hidden in actuator mode.
The group object data point type depends on the selected application and the associated control.
Output is via a 1-byte value (DPT 5.001) when the following control types are selected:
•
•
•
Output is via a 1-bit value (DPT 1.001) when the following control types are selected:
•
•
The control type is preselected by the parameter Additional-stage cooling in this case. A certain type of
control is preset depending on the selected application. The control type is freely selectable if Free
configuration is selected in this parameter.
This group object outputs the control value for Additional-stage cooling.
Use of a physical device output (e.g. valve) for Additional-stage cooling.
•
Additional-stage cooling is controlled only via group object (no internal use):
•
Depending on the input group objects of the actuator, it could be necessary to change the output of the
control value between 1 byte and 1 bit. This is performed via the parameters described above.
Cyclical sending and sending on change of the group object can be set under Extended settings in the
Room thermostat – Basic-stage heating parameter window.
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This group object is always enabled in controller mode.
This group object is hidden in actuator mode.
This group object indicates the current actual temperature value (room temperature) that the controller is us-
ing.
This value consists of the value(s) measured via the physical device inputs and the values received via the
two group objects External temperature 1 and External temperature 2.
The values recorded via the inputs are averaged, and this mean value is then combined with the values re-
ceived via the group object. A weighting factor can be defined for the combination process.
The transmission reaction of this group object is set in the Room thermostat parameter window.
This group object can also be used for display on analog room control units and visual display sys-
tems.
Function
Status Control value Addi-
tional-stage cooling
2-point 1 byte (0/100 %)
PI continuous (0...100 %)
PI continuous (0...100 %) for Fan Coil
2-point 1 bit (On/Off)
PI PWM (On/Off)
Note
The group object contains the control value that the controller uses to control the output.
The group object sends the control value for controlling a different actuator.
Note
Note
Not assigned
Actual temperature
Note
Group object name Data Type
Channel – Controller 1 byte / 1 bit
DPT 5.001 / 1.001
Channel – Controller 2 bytes
DPT 9.001
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 338
Flag
C, R, T
C, R, T