Brochure

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DALI
DALI (Digital Addressable Lighting Interface) is a
standardized interface for lighting control.
Electronic ballasts, transformers and sensors in a
lighting system communicate with the building
automation system via DALI.
Additional information can be found at:
www.dali-ag.org
Highlights
■
High installation capacity and system flexibility
due to support for up to 64 ballasts, 16 groups and
16 scenes
■
Increased reliability due to bidirectional communi-
cation with feedback of the operating device status
(dimming level, lamp errors, etc.)
■
Polarity-free, two-wire cable in linear, star or mixed
topologies with a maximum cable length of 300 m
■
Emergency lighting integrated into general lighting
systems
Source: DALI/DIM Technische Fibel, OSRAM, 2009
System data
Bus connection
Cable type NYM 5 x 1.5 mm
2
for mains power input
and DALI, excluding the polarity. Ballast
and control device can be operated at dif-
ferent line voltage phases.
Cable lengths
The length of the con-
trol line is limited only
by the voltage drop
Maximum voltage drop on the cable is 2 V
at 250 mA. The maximum total cable
length between the control unit and the
connected ballasts is 300 m.
Cable cross-section A is calculated from
the following formula:
A = L x I x 0.018
L: Cable length (m)
I: Max. current of the supply voltage (A)
0.018 = Spec. resistance of the copper
Bus devices
Possible addresses max. 64
Possible groups max. 16
Number of bus devices
per line
max. 64
Number of possible
scenes per ballast
Up to 16 light values (scenes) per ballast
can be stored, regardless of any group as-
signments that may be programmed.
Topology Parallel, star-shaped wiring, excluding
possible groups.
Ring-shaped wiring is not permitted.
Terminating resistors are not needed.
Bus systems