ABB i-bus KNX Product Manual page 71


ABB i-bus KNX
Commissioning
Dim period to reach switching value
(function switch)
Options:
A soft start or soft stop can be set with this parameter. For this purpose, the time duration during which the
DLR/A dims the lighting group from 0 % brightness to the switch on value with an ON telegram is defined.
The same speed also applies for an OFF telegram. The dim period is only relevant for ON/OFF telegrams
(1 bit).

jump to: All devices of the lighting group switch ON immediately.

0.7 s...90.5 s: During this time, the lighting group is dimmed from 0% brightness to the switch on
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 switching performance. There are
16 discrete values, which are defined according to DALI for the time for dimming changeable via bus.
If the KNX format is selected for the time for dimming changeable, rounding off errors can occur as a
result of discrete DALI times.
For further information see:
page 199
Note
The switch off time is also considered when the lighting group is at the lower dimming threshold and an
OFF telegram is received. In this case, the lighting group switches off at the lower dimming value limit
only after the programmed dimming time for switch ON/OFF. This ensures that all lighting groups switch
off simultaneously. This ensures that all lighting groups switch off simultaneously.
jump to
0.7 s
2.0 s
...
90.5 s
time for dimming changeable via bus
Communication object No. 8, page 125, and Table of fading times Fade time (No.
DLR/A 4.8.1.1 | 2CDC507128D0202 69
8),