Burning-In Of Luminaries - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and Application
4.5

Burning-in of luminaries

In the case of lamps filled with gas, a burn-in time is recommended. This burn-in process is only required
once at the start of commissioning.
Only after this burn-in time fluorescent lamps do have a stable operating value, which ensures the best
possible dimming behaviour and an optimum service life. An optimum pressure level is created in the fluo-
rescent tube by burning-in.
For installations with dimmable ballasts, many lamp manufacturers make a recommendation that a burn-in
time of 20 to 100 hours must be observed. The recommended values are about 20 hours for T8 lamps and
100 hours for T5 lamps. The exact values are available from the luminary's manufacturers. During the
burn-in time, the lamps are only switched on at maximum capacity. Dimming is not possible.
The information about burn-in times can often not be found in the catalogue of the lamp manufacturer, but
in the descriptions of the electronic ballasts, as the burn-in time only becomes relevant with dimmable sys-
tems. Stable operating values and reproducible brightness values are a prerequisite in these installations.
Moreover, only poor evaporation of the solid or fluid additives is possible for dimmed lights due to the re-
duced capacity, so that in certain circumstances the maximum light yield is only achieved at a later date or
not at all. This can lead to the complete replacement of the lights.
According to statements of lighting planners, if fluorescent lamps (particularly T5 lamps) are not burned in,
they can even be damaged causing them to fail prematurely.
With the group-oriented DGN/S 1.16.1, it is possible to activate the burn-in time via the communication ob-
ject Burn-In lamps and to place individual lighting groups or all lighting groups on the DGN/S in a burn-in
state. The lighting groups which are considered during function Burn-in can be set via parameters.
During this time, the lamps can only be switched on with 100 % or switched off. Dimming is not possible.
The function Burn-in can only be activated commonly for all lighting groups. In
Gx Group
you can individually determine for each lighting group whether the lighting group should be considered dur-
ing burn-in.
The DGN/S 1.16.1 features a counter (1...255 h) for each individual DALI device for the function Burn-in.
In this way, the burn-in time counting is undertaken for each individual DALI device in the group, even for
overlapping groups, where the DALI device is contained in several lighting groups. The resolution of the
timing is set internally to five minutes, even though the time is counted in hours. The DGN/S only indicates
the burn-in state but not the remaining or elapsed burn-in time.
If the lamp is switched off during the activated burn-in time, the burn-in counter stops the counting process.
Should the lamp be switched on again, the counting process will continue and the remaining time will be
rounded off to the nearest five minute step.
At Gateway operating voltage failure or KNX voltage failure on the DGN/S, the elapsed burn-in time is sto-
red and continues to be used after voltage recovery. The same applies after a download.
on page 51, with the parameter Enable with function Burn-in (Object "Burn-in lamps/status"),
Parameter window
DGN/S 1.16.1 | 2CDC 507 114 D0201 133