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control units per control circuit
– Max.
–
DALI not building management bus
system, but protocol for digital address
ing technical lighting control gear. Hence,
input devices with DALI connection are
addressed manufacturer-specific way!
–
IEC 62386 specifies requirements placed
on control gear allocated specific types
of device.103
The Lighting Handbook
DALI: General information
–
The term DALI stands for “Digital
Addressable Lighting Interface”. system current 250 from
central interface supply (each electronic
ballast takes maximum of
current load)
–
Two-wire control line (potential-free,
polarity-free, unshielded, terminal
resistors)
–
Voltage drop between transmitter and
receiver must not more than V
–
Application: general lighting (small number
of lighting points, static light)
. groups per control gear can
be assigned
– Max.
DALI: Features
–
Usable data transmission rate: 1200 bit/s
– Max.
–
DALI standard defined several
manufacturers luminaires and electronic
ballasts: IEC 60929 allows the combination
of devices various manufacturers.
– Max.
However, the standard defines only output
devices (control gear), not input devices
such sensors control units. scenes per control unit can be
programmed
–
Bidirectional: reports information such as
faulty lamps, dimming levels etc
