ABB i-bus FCC/S 1 1 Series Product Manual page 343

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ABB i-bus KNX
Group objects
No.
86
The group object is enabled if the parameter Minimum control value for basic load > 0 is set to Activate via
group object in the Temperature controller parameter window.
This group object is hidden in actuator mode.
Sending the value 1 on this group objects activates the basic load.
The basic load is a minimum control value that must not be fallen below. The basic-load value can be defined
for each heating and cooling stage, but only for control types for which the control value is output with
0...100 %.
The basic load is always activated jointly for all stages, but it is active only for the active heating or cooling
mode in each case.
The control value can decrease to 0 % again when the basic load is inactive.
One sample application for the basic load is floor heating, for which a certain control value must not be fallen
below to protect the installation.
Telegram value:
•
•
87
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.
Additionally, the parameter Heating/Cooling changeover must be set to Only via group object or Via slave or
group object.
This group object changes between heating and cooling modes.
If Via slave and via object is selected, changeover can be performed either via this group object or via the
control option of a slave. The current operating mode can be changed via the group object at any time.
Telegram value:
•
•
87
This group object is enabled if the actuator 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 changes between heating and cooling modes.
Changing between heating and cooling is possible only via this group object in actuator mode. The respec-
tive control value is considered active and is sent to the selected output depending on this group object
value.
Incoming group objects on the inactive control value are not processed during this time.
Telegram value:
•
•
Function
Activate minimum control value
(basic load)
0: Basic load inactive
1: Basic load active
Heating/Cooling changeover
0: Cooling
1: Heating
Heating/Cooling changeover
0: Cooling
1: Heating
Group object name Data Type
Channel – Controller 1 bit
DPT 1.003
Channel – Controller 1 bit
DPT 1.100
Channel – Actuator 1 bit
DPT 1.100
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 343
Flag
C, W
C, W, T, A
C, W, T, U