User Manual

66 / 86
Siemens Desigo Room automation - Engineering, mounting and installation CM111043en_14
Smart Infrastructure DALI network 2020-10-30
NOT admissible:
· 28 lights with onboard sensor
28 x (2mA + 5 mA) = 196 mA
· 50 lights, 1 sensor per 2 lights
50 x 2 mA + 25 x 5 mA = 225 mA
14.2 Bus topologies
Up to 64 DALI ballasts and 63 DALI-2 sensors may be installed on one DALI
circuit. No restrictions apply to the type mix.
Permissible bus topologies are: Tree, line, and star topologies. These topologies
can be mixed as needed. However, ring topologies are not allowed.
Tree topology (with stub lines) Line topology (with loops)
N2 N2
N1 N3 N4 N1 N4
N5
N6
N7 N3
DALIDALI
11043z13
N1 .. N7 DALI devices
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 document under "Technical data DALI".
AC 230 V and the bus signal can be provided in separate cables (2 + 3 stands) or
in the same 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.
DALI devices
in a circuit
Permissible bus
topologies
Bus lines
Bus cable selection