OSRAM OPTOTRONIC Constant current LED power supplies with 3DIM - Manual (Page 22)

22
FREQUENTLY ASKED QUESTIONS (FAQ)
What happens if the operating time in AstroDIM mode
is shorter than 4 hours?
If the operating time of the ECG is shorter than 4 hours,
it is not saved and therefore not used to calculate the next
operating time. This situation can occur as a result of long
voltage dips or during maintenance of the luminaire. Figure
30 shows that normal operation is restored in the following
night.
What happens if the operating time in AstroDIM mode
is longer than 24 hours?
If the operating time of the ECG is longer than 24 hours,
it is not saved and therefore not used to calculate the next
operating time. This can be the case when the system is
installed or tested. Moreover, the dimming profi le based
on the last valid operating time (shorter than 24 hours and
longer than 4 hours) is performed automatically every 24
hours if the ECG is not turned off.
Note: Continuous 24-hour operation is not recommended.
Is it possible to reset the AstroDIM operating time memory?
For maintenance of the installation, it is required to reset
the AstroDIM operating time memory to restore the factory
settings. This can be done with the 3DIM Tool.
What happens if a DALI ® operation is stopped and the
ECG is confi gured as “AstroDIM/DALI”?
The ECG does not switch to AstroDIM operation directly
after DALI
® disconnection. The power supply fi rst has to
be turned off and on again.
Figure 30: AstroDIM operation shorter than 4 hours.
Figure 31: AstroDIM operation longer than 24 hours.
Dim level %
Dim level %
Time (h)
Time (h)
100
100
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
ON
ON
OFF
OFF
Day 1
Day 1
Day 2
Day 2 Day 3 Day 4
24 h 24 h
Mains
Mains