ABB i-bus KNX Product Manual page 59


ABB i-bus KNX
Commissioning
Dim period to reach set brightness value
(function brightness value)
Options:
This parameter determines the time duration, in which the DLR/S sets the received brightness value for all
the DALI devices on the DALI output via the communication objects Brightness value or Brightness
value/Status.

Jump to: All the 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.

Flexible dimming time – settable via KNX: 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/S 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 203

DALI format in s (value 0...15/0...90.5 s): The values received via the communication object are
interpreted by the DLR/S as a discreet numeric value, which is converted directly in 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/S as a 100 ms value 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 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 that is not 100% identical and synchronous occurs. In such applications, the KNX
lighting equipment times should be used that are also available to DALI.
Jump to
0.7 s
...
2.0 s
...
90.5 s
Flexible dimming time – settable via KNX
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 129, and Table of fading times Fade Time (no.
6), page 199
DLR/S 8.16.1M | 2CDC 507 100 D0202 57
8),