ABB i-bus KNX Product Manual page 120

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ABB i-bus KNX
Planning and application
Example
The first three outputs of the device are assigned to the following scenes. The preset values have been
saved with the last corresponding setting of the scenes.
If scene No. 5 is now recalled, the blinds/shutters on outputs A and B will move to the saved preset
positions and align their slats in accordance with the saved preset value. The blind/shutter on output C
is not assigned to scene No. 5 and will therefore not move.
If, however, scene No. 10 is recalled, only the blind/shutter on output C will move to the saved preset
position. As output C in this example is operated in the Control without slat adjustment (shutter)
operation mode, the subsequent alignment of the slats is not undertaken.
If the output A was most recently moved to the 20 % / 50 % position using the telegram Recall scene
no. 5 and the user now wishes to apply this position as the new specified value for scene no. 45, then
the number 45 and the request Save scene is sent via KNX at the touch of a button. The blind/shutter
does not move. The current position is saved as the now specified value for scene no. 45 (see table
below) and is moved to then next time this scene is recalled.
The 8-bit scene offers a few advantages in comparison to conventional scene programming.
When calling a scene, a single telegram is sent on the bus and is received by all participants in the
scene and implemented accordingly. The target position is saved in the device and does not need to be
transferred via the KNX with each recall. Only one group address is required for up to 64 scenes. This
simplifies the engineering involved and reduces the bus load.
Reaction on bus voltage failure and programming
If there is a bus voltage failure, the saved scene values are retained, as is the case when only the
parameters are loaded during programming. The scene value is reset to the position Very top, i.e. the
position specification = 0 % and slat specification = 0 %, when

The device is discharged and reprogrammed.

The application version changes.
118 2CDC 506 051 D0204 | JRA/S
Output Scene No.
A
A
A
B
B
B
B
C
Output Scene No.
A
A
A
Preset position
5 20 %
9 47 %
45 70 %
5 20 %
37 82 %
45 75 %
58 65 %
10 80 %
Preset position
5 20 %
9 47 %
45 20 %
Preset slat
50 %
30 %
80 %
50 %
65 %
31 %
77 %
-
Preset slat
50 %
30 %
50 %