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Dimming

DALI
Digital Addressable Lighting Interface – digital signal interface specially developed for lighting applications. DALI network
consists of a controller and one or more lighting devices (e.g., electrical ballasts, LED drivers and dimmers) that have DALI in-
terfaces. The controller can monitor and control each light by means of a bi-directional data exchange. DALI requires a single
pair of wires to form the bus for communication to all devices on a single DALI network.

0 - 10 V
Analog signal interface with no feedback from driver. For this dimming interface 100% is the maximum of driver and 10% is the
minimum level. The output status is not guaranteed when the dimming signal is less than 1V. The output of LED driver could be
completely switched off or there is still some light coming out of LED module. If application requirement is to completely turn off
the driver, then additional switch at AC mains of driver is required.

1 - 10 V
Analog signal interface with no feedback from driver. For this dimming interface 100% is the maximum of driver and 10% is the
minimum level. The output status is not guaranteed when the dimming signal is less than 1V. The output of LED driver could be
completely switched off or there is still some light coming out of LED module. If application requirement is to completely turn off
the driver, then additional switch at AC mains of driver is required.

MIDNIGHT DIMMING

Midnight dimming provides multi-stage night-time power reduction based on an internal timer referenced to the power on/off
time. There is no need for an external control infrastructure. The unit automatically performs a dimming profile based on the pre-
defined scheduled reference to the midpoint, which is calculated based on the power on / off times.

100% T1 T2 T3 T4 12 00
80 % 20 00 6 00
60 %
40 %
20 %

0%
14 00