Poznámky redaktora
However, the standard defines only output
devices (control gear), not input devices
such sensors control units. 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)
.
DALI: Features
–
Usable data transmission rate: 1200 bit/s
– Max.
–
DALI not building management bus
system, but protocol for digital address
ing technical lighting control gear.103
The Lighting Handbook
DALI: General information
–
The term DALI stands for “Digital
Addressable Lighting Interface”.
–
DALI standard defined several
manufacturers luminaires and electronic
ballasts: IEC 60929 allows the combination
of devices various manufacturers. scenes per control unit can be
programmed
–
Bidirectional: reports information such as
faulty lamps, dimming levels etc.
– Max. groups per control gear can
be assigned
– Max. control units per control circuit
– Max. Hence,
input devices with DALI connection are
addressed manufacturer-specific way!
–
IEC 62386 specifies requirements placed
on control gear allocated specific types
of device
