Installation Instructions For System Devices; Wiring The Devices; Internal Bus; External Bus - ABB Welcome User Manual

Installation instructions for system devices

Recommendation: All MDRC units should be mounted in
the central distribution of the building. This can be altered
depending on the size of the building and topology selected.
For example, when installing an auxiliary power supply in the
sub-distribution of the apartment, for connecting the devices.
The ABB-Welcome indoor FM video distributor is suitable for
mounting in rising mains below a floor call button in a deep
flush-mounted wall box.

Wiring the devices

Internal bus

The internal bus is wired continuously via terminal pairs a
b available on the devices. To connect the two internal bus
1
lines, the system controller has two terminal pairs a
are labelled OUT 1 and OUT 2. Starting from these terminal
pairs the internal bus lines are fed to the indoor stations,
including IP gateway, the indoor video distributors and the
auxiliary power supplies and there also connected to a
terminal pair a /b .
1 1
For a device with only one terminal pair a
looping the bus line. Also terminal pairs a
Warning: Low-voltage and 230 V cables must not be installed together in a flush-mounted socket.
In case of a short-circuit there is the danger of a 230 V load on the low-voltage line.
* An exception is the indoor FM video distributor, which contains two internally bridged terminal pairs a1/b1 labelled IN for more practical wiring.
0.6 m
1.5 m
1.10 m 1.90 m
used for looping the bus line on indoor video distributors and
the auxiliary power supply.* The stub line of the bus line is
connected to the terminal pairs a

External bus

The external bus is wired continuously via the terminal pairs
a /b
2
terminal pair a
To these the external bus lines to the outdoor stations, the
outdoor video distributors and the switch actuators are con-
nected.
The terminal pairs a
/ the outdoor video distributors for connecting the bus lines
1
coming from the outdoor stations. The terminal pair a
/b . They labelled OUT is used for connecting the bus line going to the
1 1
system controller. Only one terminal pair a
the door/light switch actuator. It is used for looping the bus line.
Additional terminal pairs
All additional terminal pairs – for connecting an electronic
door opener or floor call button – are explained in the operating
/b this is used for manuals of the respective devices. Additional connecting
1 1
/b labelled IN are diagrams are available as example on pages 52 to 53.
1 1
0.6 m
0.82 m 1.70 m
available on the devices. The system controller has a
2
/b labelled IN to connect the external bus line.
2 2
/b labelled IN 1 and IN 2 are used on
2 2
0.4 m 1.12 m
+ – 15°
- 15°
0.6 m
1.30 m
User Manual ABB-Welcome | Installation 35
/b labelled OUT 1 to 4.
1 1
/b
2 2
/b is available on
2 2
0.4 m
0.6 m
+ 15°
2.18 m