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

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ABB i-bus KNX
Planning and application
4.6

Burning-in of luminaires

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 do fluorescent lamps have a stable operating value, which ensures the best
possible dimming behavior and an optimum service life. An optimum pressure level is created in the
fluorescent tube by burn-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 luminaire'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
systems. 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 reduced 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 DALI Light Controller, it is possible to activate the burn-in time via the communication object Burn-
in lamp / status and to place individual lighting groups or all lighting groups on the DALI Light Controller in
the 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 be activated for all lighting groups together (DALI output) or by using an
additional object for each lighting group individually (group x). In
every lighting group can be enabled for burn-in with the parameter Enable central function lamp Burn-in
object "Burn-in lamp/status". The activation of the function Burn-in can be undertaken centrally via the
communication object DALI output or per lighting group via communication objects Group x.
Parameter window Gx Group, page 63,
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