OSRAM QUICKTRONIC INTELLIGENT DIM CFL User Manual
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2.8
Features of the digital interface
•
IEC 62386 – This allows the combination of units from different
manufacturers. A special feature to be noted is that the DALI man-
ufacturers represented in the AG DALI.
6
test their units together in
order to guarantee high functional security.
•
Physical usable data rate of 1200 bit/s enables fault-free opera-
tion
7
•
Safe interference voltage gap – the generously dimensioned inter-
ference voltage gap of the high and low level guarantee safe opera-
tion
•
Data coding – the Manchester code is used; its structure allows
detection of transmission errors
•
Maximum system current – the maximum current that a central in-
terface
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supply must deliver is 250 mA. Each control unit may take
max. 2 mA. This must be taken into consideration when selecting
the interface supply.
•
Limited system size – a maximum of 64 control units with an in-
dividual address can be operated differently in a single system
•
Feedback of information – ON/OFF, current brightness value of the
connected lamps, lamp status etc. are possible
•
Two-wire control line – there should be two basic insulations be-
tween two conductors. Hence, single-layer insulation of a conduc-
tor is adequate. Control and supply lines can be laid together; a
minimum cross section of the line must be maintained here. The
maximum line length between two connected system subscribers
must not exceed 300 meters
•
Potential-free control input – the control input is electrically sepa-
rated from the mains supply. The ECGs can thus be operated on
different outer conductors (phases)
•
No terminating resistors required – the interface lines do not need
to be connected to resistors
6
Every ECG manufacturer that has the DALI logo on its ECG is a member of the
AG DALI
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40 commands/s and 16 bits
!
640 bit/s
8
DALI interface on the control unit:
The DALI interface of the control unit also supplies the DALI interface of the
connected DALI components. To ensure that the total current of max. 250 mA
permitted for DALI is not exceeded, no other DALI supplies or DALI controllers
can be connected to this system. In order not to exceed the max. permissible
voltage drop of 2 V on the interface lines, the line cross section must be chosen
according to the table in the technical details (2.5.4).