ABB i-bus KNX Product Manual page 55


ABB i-bus KNX
Commissioning
Dim period to reach set brightness value
(function brightness value)
Options:
Dieser Parameter bestimmt die Zeitdauer, während der der DLR/A den über die Kommunikationsobjekte
Helligkeitswert oder Helligkeitswert/Status empfangenen Helligkeitswert für alle DALI-Teilnehmer am
DALI-Ausgang einstellt.

jump to: All devices on the DALI output immediately switch ON with the received brightness value.

0.7 s...90.5 s: During this time, the lighting group is dimmed down to the received brightness value.

time for dimming changeable via bus: The time received via the communication object Fade time
(DALI format) or (KNX format) has an effect on the ON/OFF dimming via the brightness value. The
format for the flexible dimming time has to be determined in the parameter Object format of flexible
time for dimming (Fade time).
Object format of flexible time for dimming (Fade time)
Options:
The DLR/A features the option of changing the dimming time via the KNX. For this purpose, only times that
are defined in the DALI can be defined and used. These are 16 discrete values.
For further information see:
page 199

DALI format in s (value 0...15/0...90.5 s): The values received via the communication object are
interpreted by the DLR/A as discrete figure values, which are converted directly to the DALI value for
the fading time. These values comply with the specified transition times according to the DALI
standard. Here, for example, the value 0 means immediate activation of the value whereas 15
corresponds to 90.5 seconds.

KNX format in 100 ms (value 0...65,535/0...9050 ms): The values received via the communication
object are interpreted in the DLR/A as 100 ms values and mathematically rounded off to the next DALI
value.
For further information see:
Note
It is recommended that you use the DALI format as this ensures that the exact DALI system based
values can be used.
When using the KNX format the KNX values (0...9050 ms) are rounded off to the DALI values. This fact
is to be considered, particularly when KNX lighting equipment is in combined usage with DALI lighting
equipment during brightness response curves, e.g. a KNX dimmer can be dimmed using a dimming
time of 13654 ms. As this time is not available in DALI, the DALI equipment is dimmed with 16 seconds.
A brightness curve synchronous response that is not 100% identical occurs. In such applications, the
KNX lighting equipment times should be used that are also available to DALI. In solchen Anwendungen
sind für die KNX-Leuchtmittel Zeiten zu verwenden, die auch im DALI zur Verfügung stehen.
jump to
0.7 s
...
2.0 s
...
90.5 s
time for dimming changeable via bus
DALI format in s (value 0...15/0...90.5 s)
KNX format in 100 ms (value 0...65,535/0...9050 ms)
communication object No.
Code table Diagnostics Low byte (No.
8, page 125, and Table of fading times Fade time (No.
6), page 195
DLR/A 4.8.1.1 | 2CDC507128D0202 53
8),