Control System - ABB i-bus KNX Product Manual

ABB i-bus KNX
3.3.2

Control system

© 2009 Busch-Jaeger Elektro GmbH – A Company of the ABB Group
Commissioning
No. Function
4 Frost/heat protection
This data item forms the 1-bit object of KNX for switching operating modes (frost and heat
protection). It can be received only.
For example, binary inputs that record information from window contacts to notify the ambient
temperature controller that a window is open or closed can send their current status to the
frost and heat protection object. When receiving an ON telegram, the room thermostat
activates frost protection mode; when an OFF telegram is received, frost protection mode is
deactivated and the current mode is changed.
The "window" symbol is shown in the display when frost/heat protection is enabled.
0: Frost/Heat Protection Off
1: Frost/Heat Protection On
5 Activate night mode
This 1-bit communication object can be used to switch the room thermostat to night mode
when an ON telegram is received. An OFF telegram deactivates night mode. This
communication object can be used, e.g., by time switches to send information.
This data item forms the 1-bit object of KNX for switching operating modes (night mode).
It can be received only, because a manual switch to night mode on site is not possible.
In night mode the parameterisable setpoint "night mode" is enabled and the fan stage is
limited to a parameterisable value.
0: night mode Off
1: night mode On
6 User absent
This 1-bit communication object switches the room thermostat between comfort and standby
modes. When an ON telegram is received, comfort mode is activated; when an OFF telegram
is received, standby mode is activated.
This data item forms the 1-bit object of KNX for switching operating modes (comfort /
standby). It can be received and sent.
0: control system is in Standby mode
1: control system is in Comfort mode
Object name Data type
Control 1 Bit EIS1
DPT 1.001
Control 1 Bit EIS1
DPT 1.001
Control 1 Bit EIS1
DPT 1.001
Flags
K, S, L
K, S, L
K, Ü, S,
L
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