Group Objects Channel A - Controller - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Group objects
8.6 Group objects Channel A – Controller
No.
37
This group object is enabled if the controller was parametrized for both heating and cooling. For this purpose, Deactivated
must not be selected for the parameters Basic-stage heating and Basic-stage cooling in the Application parameters parameter
window.
This group object is hidden in actuator mode.
The group object indicates whether the system is currently heating or cooling. Heating/cooling switchover takes place for
controlled devices depending on this group object.
Telegram value:
•
0: Cooling
•
1: Heating
38
The group object is enabled if Deactivated was not selected for the parameter Basic-stage heating 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:
•
2-point 1 byte (0/100%)
•
PI continuous (0...100 %)
Output is via a 1-bit value (DPT 1.001) when the following control types are selected:
•
2-point 1 bit (On/Off)
•
PI PWM (On/Off)
The control type is preselected by the parameter Basic-stage heating 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 Basic-stage heating.
Use of a physical device output (e.g. valve) for basic-stage heating:
•
The group object contains the control value that the controller uses to control the output.
Basic-stage heating is controlled only via group object (no internal use):
•
The group object sends the control value for controlling a different actuator.
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 after a change in the control value can be set in Extended settings in the Temperature
controller – Basic-stage heating parameter window.
206 2CDC508220D0211 Rev. A | VC/S 4.x.1
Object function
Status Heating/Cooling
Status Control value Basic-stage heating
Note
Note
Note
Name
Channel A – Controller
Channel A – Controller
Data type Flags
1 bit C, R, T
DPT 1.100
1 byte / 1 bit C, R, T
DPT 5.001 / 1.001