ABB DG/S 1.1 Product Manual page 106

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ABB i-bus EIB
© 2006 ABB STOTZ-KONTAKT GmbH
Appendix
Group
A group in lighting technology is the number of electrical devices which can
be controlled and/or switched together.
Groups can be formed via hardware with the corresponding wiring or via
software with the corresponding addressing.
Constant lighting control
In constant lighting control, the brightness in the room is measured
continually and adapted to the incidental daylight. Daylight-dependent
lighting variations are balanced out in the room with this type of control.
Through the adaptation to the light incidence, only the amount of energy that
is actually required is used to set the required brightness level in the room.
SELV (Safety Extra Low Voltage)
SELV means protection through safety extra-low voltage.
If someone touches an SELV circuit, any danger is ruled out. Refer to the
norm DIN VDE 0100 part 410.
Scene
In lighting technology, a scene or lightscene denotes a special lighting
situation.
Different luminaires with various brightness values can be combined
together in a scene so that the room can be illuminated according to
requirements.
If necessary, scenes for e.g. presentations, meetings or exhibitions can be
retrieved by a single command or push button action.
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