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Siemens Desigo Room automation - Engineering, mounting and installation CM111043en_13
Smart Infrastrructure DALI network 2020-04-30
14.3 Cables
The bus lines (= wired pair) are connected via DALI (DA).
Observe polarity.
Use standard off-the-shelf installation materials to wiring mains power. You must
observe the values indicated in this data sheet under "Technical data DALI".
AC24V can be provided in the same (2 + 3 stands) or in a separate cable (5 wire).
11043Z14
DA
DA
N L
PE
L
N
PE
DA
DA
Commonly used cable sizes (as per DIN VDE 0100/T520/Section 6):
– NYM 5 x 1.5 mm
2
– NYM 7 x 1.5 mm
2
– NYM 2 x 1.5 mm
2
and 3 x 1.5 mm
2
– NYM 2 x 1.5 mm
2
and 5 x 1.5 mm
2
A 1.5 mm
2
cable corresponds to AWG15...16.
The overall length is 300 m / 1000 ft for a wiring cross-section of at least 1.5 mm
2
.
The permissible voltage drop off over the DALI line and the terminals is a maximum
of 2 V. The voltage drop off over the DALI line is typically 90% of 2V (1.8V) and via
the terminals 10% of 2V (0.2V).
Must comply with low-voltage installation regulations since the DALI signal is not
SELV.
NO protection against miswiring with AC 24 V or AC 230 V:
Applying a voltage between DA+ / DA+ or between DA– / DA– will destroy the
DALI PCB!
This is particularly the case when the AC 24 V supply plug is connected to
the DALI socket.
Bus lines
Bus cable selection
Distances
Note
. Regulations
Faulty wiring