Power Supply And Lock Release - golmar VistaPlus Manuel D'installation

INSTALLATION
P
ower supply and lock release.
The power supply's position in the installation and the way it's connected to the system can affect
its performance. Pay careful attention to this point in order to obtain maximum performance
from the video door entry system.
We will normally come across the following possibilities:
If the conductors between door panel-power supply use a conduit independent of the rest
of the installation:
-Greater protection against interference when installing an alternating current door release
(requires an
EL 502
-If 4 wires are available between the door panel and power supply, adding a transformer
TF104 to the installation, we can install an alternating current door release without using a
converter (see page 129)
If the conductors between door panel-power supply use the same conduit as the rest of the
installation:
-The installation of a direct current door release is recommended.
- Greater possibility of interference when installing an alternating current door release (requires
an dc/ac converter), see page 131
EL 502
-The installation of a direct current door release is recommended.
dc/ac converter), see page 131.
.
The power supply is connected to the door
panel, which in turn, is connected to the
riser:
-Deteriorates the electricity supply by
increasing the distance between the power
supply and farthest monitor, pay careful
attention to the cross section of the positive
wire.
-Greater resistance to video-audio
interference.
The power supply is connected to a point
somewhere between the door panel and
the first distributor:
-Improves the electricity supply by reducing
the distance between the power supply
and farthest monitor.
-Less resistance to video-audio interference,
pay careful attention to the cross section of
the ground wire. This resistance will
deteriorate the greater the distance
between the power supply and door panel.
.
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