ABB Welcome, User Manual

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Auxiliary power supplies
Auxiliary power supplies can be connected to the internal bus
lines at any position. They serve for the connection of indoor
stations. One auxiliary power supply makes available 45 consumer
units. Neither they nor the connected devices put a load on the
system controller.
The use of auxiliary power supplies increases the number of
devices in a system. The maximum signal range – measured
from the system controller – is not increased. The indoor
stations can be connected to each of the four outputs of the
auxiliary power supply. A uniform distribution of the outputs is
recommended.
Cable type and signal ranges
The following cable types with a diameter of 0.8 mm are
recommended:
» Telecommunication lines J-Y(St)-Y
» Bell lines YR
» Telecommunication lines for outdoor A-2Y(L)2Y
The following cable types should not be used:
» Antenna cables
» NYM cables
» Riser cables
» Cable with a diameter smaller than 0.6 mm
The signal ranges for bus lines
The length of cables for the system controller to the remotest
indoor station or outdoor station must not exceed the following
values:
Bus lines
Connected
indoor or
outdoor stations
Signal range
External bus Audio 300 m
External bus Audio/Video 100 m*
Internal bus line 1 Audio 300 m
Internal bus line 1 Audio/Video 100 m
Internal bus line 2 Audio 300 m
Internal bus line 2 Audio/Video 100 m
* When connecting only one ABB-Welcome video outdoor station to
the external bus line the signal range is 150 m.
Note: The two separate internal bus lines 1 and 2 permit the
setup of a pure audio line with a signal range of 300 m and
an audio/video line with a signal range of 100 m.
Maximum number of devices per internal bus line
The maximum number of devices per internal bus line must
be observed. It is dependent on the power consumption of
the connected indoor stations:
Connected device type
Maximum number of
indoor stations
Maximum cable length
between power sup-
ply and the remotest
indoor station
ABB-Welcome audio
indoor station with
handset 30 devices 300 m
ABB-Welcome audio
indoor station with
display 30 devices 100 m*
ABB-Welcome audio
indoor station with
display 6 devices 200 m*
ABB-Welcome audio
indoor station with
display 4 devices 300 m
ABB-Welcome IP
gateway for
Busch-ComfortTouch
®
4 devices
100 m
ABB-WelcomeTouch 4 devices 100 m
* The shortened length of cable in comparison to the signal range of the
ABB-Welcome indoor audio station with display results from the increase
in current consumption in comparison to the ABB-Welcome audio indoor
station with handset. When the maximum number of devices at the system
controller is exceeded, an auxiliary power supply must be used. In turn, for
each of the four outputs of the auxiliary power supply the number of devices
and limits of cable length specified in the table apply.
Note: The maximum cable length specified applies to cables with
a diameter of 0.8 mm. For a diameter of 0.6 mm the length of
cable is halved.
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