Installation Rules - Comelit MT SB2 01 Manuel Technique

INSTALLATION RULES

Installation rules for video door entry systems
Avoid placing the riser wires near power supply cables (220/380V).
In the branches towards each user, insert terminal Art. 1214/2
supplied to equip the bracket Art. 4714W/2 or which can be
purchased separately for the telephones Art. 2428W on the riser.
Terminate each riser or branch with Art. 1216 supplied with the
Mixer-power supply Art. 4896 and with the video module Art. 4660.
According to the cable used for the riser, set closure on Art. 1216
as shown in the table on page 42.
According to the cable used for the riser, assess the maximum
distance which can be reached between the Mixer-Power supply
Art.4896 and the monitor furthest away, and between terminal of
branch terminal Art. 1214/2 and the monitor furthest away.
According to the cable used for the connection, assess the
maximum distance which can be reached between the external unit
video and the Mixer-power supply Art. 4896.
Refer to the tables on page 38 to assess the distances according
to the conductors.
Each Art.4896 can manage a MAX of 4 riser branches - see
variant SB2/B on page 103.
In the case of systems with main and secondary entrances
(see diagram SB2V/EN/112 on page 97), it is necessary to use the
line concentrator Art. 4834/2 and the switching device Art. 1224.
In the case of a single entrance, it is possible to connect up to 4
Mixers-power supplies Art. 4896 after Art. 4834/2 (see diagram
SB2V/012 on page 94).
Each Art. 4834/2 allows a MAX of 4 branches: in the case where
several branches are needed (up to 16), it is necessary to put two
Arts. 4834/2 in cascade. The additional Art. 4834/2 must be
preceded by the relative video signal amplifier Art. 4833/A
(see variant SB2/C on page 104). A MAX of 2 Arts. 4834/2 in
cascade can be inserted.
The MAX number of users which can be connected to a single
Mixer-power supply Art. 4896 is 100 regardless of whether they
are divided over a single riser or over several riser branches
(e.g.: 100 users over a single riser or 25 users over each of the
4 riser branches.)
It is possible to connect up to 25 monitors in cascade for each riser
branch (see variant SB2/G on page 106). In this case, in order
to determine the Max. distance between external unit and the last
monitor of the cascade, please refer to the table on page 38
column A.
The connection between several monitors with same user code
(MAX 3) can take place in cascade or branched from the riser
following the variants SB2/A1-A2-A3-A4-A5 (pages 99-100-101-102).
Telephones Art. 2428W with same monitor user code must be
branched directly from the riser by means of Art. 1214/2.
Art. 4896 supplies only a single monitor for each call, therefore
for systems with several monitors with the same user code, it is
necessary to set the additional monitors as secondary or supply
each additional monitor with power separately by means of
Art.1212/B (see pages 99-100-101).
Set the bridges and the jumper on bracket Art. 4714W/2 as shown
in the variants to the basic diagrams SB2/A1-A2-A3 according to
the configuration to be obtained.
The cameras of the external units must not be directed towards
direct light sources (e.g.. lamps, sunlight, reflecting surfaces, etc.).
MT SB2 01
37 MT SB2 01