14
ABB i-bus
®
KNX
Technical data and connection
2.5 Assembly
and
installation
2.6 Commissioning
The DALI-Gateway DG/S 8.1 is suitable for insertion in distribution boards or
miniature housing for snapping onto 35 mm mounting rails, in accordance
with EN 60 715.
The accessibility of the device for operation, testing, inspection, maintenance
and repair must be ensured.
The electrical connection is carried out via screw terminals. Connection
to the KNX is established with a bus connection terminal. The terminal
designations are located on the housing.
Up to 16 devices with DALI interface can be connected per DALI output
(channel). To do so, it is necessary to use a control cable with a maximum
length (see Table 2) which is dependent on the cable cross-section.
Cable length [mm
2
]
2 x 0.5
2 x 0.75
2 x 1.0
2 x 1.5
Max. cable length [m]
from the gateway to
the DALI device
100
150
200
300
Table 2: Maximum cable length per DALI output (channel)
The figures in the table are rounded figures. The exact figures are calculated
with the following form:
L = A / (I x 0.018) L = Cable length in m
A = Cable cross-section in mm
2
I = Maximum supply current in A (0,25A)
It is possible to assemble the DALI control cable with conventional installation
material for mains cables. The two cores of the five-core NYM 5x1.5 mm
2
which are not required can be used without consideration of the polarity.
It is not necessary to lay a separate control cable.
The assignment of the physical address as well as the parameter settings
are carried out with the Engineering Tool Software ETS (from version
ETS2 V1.3 onwards).
The DALI-Gateway DG/S 8.1 is ready for operation once the operating
voltage has been applied. The green operating LED on the front of the de-
vice lights up.
No commissioning or addressing is required for the DALI equipment.
The power supply of the DALI control cable is carried out via the gateway.
A separate DALI power supply is not required.
Once the operating voltage is applied, the DALI Gateway automatically
detects the connected DALI equipment and is ready for operation.
No knowledge of DALI is required for commissioning the DALI Gateway.
The DALI devices are connected to the gateway in the same way as 1...10 V
lighting technology. No DALI addressing or commissioning needs to be
carried out. The DALI devices can be integrated directly in the KNX building
technology with the appropriate communication objects once they have
been installed correctly and connected to the gateway.