56
ABB i-bus
®
KNX
Application and planning
Example:
An KNX scene (no. 8) consisting of 4 lamps and 3 shutters which are con-
nected to two DALI Gateways and 2 shutter actuators can be recalled via a
single KNX telegram. The prerequisite is that all the participants of scene 8
are parameterised accordingly in their devices. After the receipt of the tele-
gram, the two DALI Gateways switch on their scene with the number 8. This
is carried out with the transition periods which have been set in the gateway.
The two shutter actuators move the 3 shutters into the corre sponding positi-
on at the same time.
Benefit:
The 8-bit scene offers several advantages compared to conven-
tional scene programming. On the one hand, only one telegram is sent via
the bus when a scene is recalled which is received and converted by all the
participants in the scene. On the other hand, the target position of the
shutter or the brightness of the DALI devices is stored in the actuator or
DALI Gateway and does not need to be transferred via the KNX after each
recall.
The scene numbering 1 to 16 is recalled via the KNX with
a telegram value of 0 to 15. Refer to the key table in the appendix
A.2 for the corresponding scene codes.
Coloured light can be generated with LED technology from the colours red,
green and blue. LED strips with the corresponding DALI converters are
available which can be connected to the DALI Gateway.
A rail mounted LED strip is connected to three LED converters. Each
colour can be addressed individually with KNX push buttons via corre-
sponding KNX objects. Each colour can be controlled separately, whereby
each colour can be set.
Fig. 28: Example of colour LED system
Repetitive lighting effects can be controlled with the help of slave mode
and corresponding KNX devices (e.g. timer). By retrieving a scene or using
dynamic mode, different colours can be set and retrieved directly or with
specific colour transitions.
+ -
앑 앑
DA DA
+ -
+ -
앑 앑
DA DA
앑 앑
DA DA
R
G
B
+
230 VAC
EIB / KNX
5.2
Coloured light with
LED technology and DALI