91
(MT12 - Gb2004)
I
NTERCOMS
*
V
IDEOINTERCOMS
*
T
ELECOMMUNICA
TION
3
"
2
/
1
89
2
"
16
/
9
2
"
4
/
3
70
65
3 "
2
/
1
89
2 "
16
/
15
74
5 "
2
/
1
140
1273TV. 7-CONTACT ANALOG EX-
CHANGER.
It is used in systems with 2 or more video
entrances for switching automatically the video
signals, the audio lines and door lock on the
calling entrance.
Can be fixed on DIN bar or with two expansion
plugs. In housing DIN 8 modules A.
For the switching of video signals it is advis-
able to use terminals 8-8a-8b and 9-9a-9b,
being that they are physically closer.
Terminals
1 Power supply 13Vac-0.1A (15÷21Vdc)
2 Ground
3 and 4 Driver to switch the relay in “b” position
- ON position
5 and 6 Driver to switch the relay in “a” position
- OFF position
7,8,9,10,11,12,13
Common contact of relay
7a,8a,9a,10a,11a,12a, 13a OFF position of relay
contacts
7b,8b,9b,10b,11b,12b, 13b ON position of relay
contacts
1
2
3
1
2
3
MEMORY
ON (b)
OFF (a)
7b 7a 8b 8a 9b 9a
10b 10a 11b 11a 12b 12a 13b 13a
10b 10a 11b 11a 12b 12a 13b 13a
10
11
12
13
10
11
12
13
4
5
4
5
6
7
8
9
6
7
8
9
SERVICE MODULES
1473.
EXCHANGER. See page 25.
1471.
RELAY MODULE. See page 25.
1471E. RELAY MODULE. See page 25.
1472.
2-CONTACT RELAY UNIT. See
page 25.
INSTALLATION INSTRUCTIONS
General characteristics
- The cable runs of intercom and video intercom
installations must be kept separate from the mains
or any other electrical installation as required by
the International Safety Standards and the
entire installation must be realized in compliance
with the safety rules in force in any specific Coun-
try.
- It is necessary to provide an all contact switch
before the power supply. Use a single general
switch in case of several power supplies (also in
multiple entrance).
- Before connecting the power supply make sure
that its rating data corresponds to this of the
mains.
- For electromagnetic reasons, all service mod-
ules must be installed near their power supply.
Wires
1) For the correct operation of the video intercom
system you must choose the correct type of
cable.
2) Wires must be dimensioned according to the
distance of the different devices and their cur-
rent consumption.
3) Do not connect wires in parallel to reach the
required cross-section (for example multi-pair
telephone cables). Only use a single wire with
suitable cross-section. When using multi-core
cables you must select them with low parasite
parameters (low capacitance per metre, low
inductance over Ohm).
4) If the installation includes additional power sup-
plies you must place them near the device to be
powered.
Background noise
To avoid possible background noise over the
speech line, it is advisable:
5) not to lay intercom or telephone cables in the
same runaway as the wires used to power
alternate current loads;
6) to avoid using the same multi-core cable to
transmit audio signals and alternate current
power supplies (lamps, amplified external door
stations, electrical door locks). Always use sepa-
rate wires for alternate current power supplies;
7) do not connect the name plate lamps (or other
AC powered devices) to terminal 4 (-) of the
speaker unit; two wires must start from terminal
F of the timer, one for terminal 4 of the speaker
unit and one for the connection of the lamps (or
other AC powered devices);
8) for name-plate lamps, to use an additional 12Vac
transformer (PRS210 type) with suitable power
(consumption is 75mA for each lamp) with 2
power supply wires separate from audio wires;
9) for systems with long distance between the
external door station and the last video inter-
com, it is advisable to position the power supply
near the external door station (see diagram on
page 97).
RL37. RELAY MODULE.
Relay module used to regenerate the elec-
tronic call for additional 3 intercoms or video
intercoms. It permits to activate/deactivate
max. 3 additional video power supplies.
Complete with electronic ringing generator
for intercommunication.
Can be fixed on DIN bar or screwed to the
wall with 2 expansion plugs.
Technical data
Power supply:
13Vac
Current consumption: 0.04A
Current consumption with ringing ON: 0.6A
Number of exchanges: 1
Max. switching current: 1A (24V)
Housing: DIN 4 modules A
Operating temperature:0° ÷ 50°C
Maximum permissible humidity:
90% RH
Terminals
Alternate current input
-
Ground
H
Timed continuous current input 21Vdc
IV
Additional power supply activation
C
Common contact of relay
NA Normally open contact of relay
9P Electronic call input
9M Regenerated electronic call output acti-
vated by terminal 9P
9R Direct electronic call output from terminal
9P
B
8Vdc voltage output
