Service Modules - Farfisa Si 5050 Technical Manual

SERVICE MODULES

1273TV. EXCHANGER.
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 advisable to use terminals 8-8a-
8b and 9-9a-9b, being that they are physically
closer.
Terminals
1 Power supply 13Vac-0.1A
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 and 13 Common relay contacts
7a, 8a, 9a, 10a, 11a, 12a and 13a OFF position
of the relay contacts
7b, 8b, 9b, 10b, 11b, 12b and 13b ON position
of the relay contacts
1473. EXCHANGER.
It is different from the previous one in that it
has a reduced number of exchanges (4 in-
stead of 7), and for the presence of 3 termi-
nals (11, 12 and 13) for switching the relay
using a ground commands.
2443. RELAY AMPLIFIER FOR INTERCOM-
MUNICATING SYSTEMS.
It is suitable for video intercom systems where
it is necessary to have the intercommunicat-
ing service in different flats with privacy to-
wards both outside and other users. Use
art.2443 in every intercommunicating flat.
Can be fixed on DIN bar or with two expansion
plugs. In housing DIN 4 modules A.
Terminals
F General ground
B Power supply 8Vdc-60mA
Power supply 13Vac-70mA
12 Connection toward the microphone of the
monitors
12a Audio output from door station (transmitter
channel)
13 Connection towards the speaker of the moni-
tors
13a Audio input from the door station (receiver
channel)
14 Timed power supply for the audio connec-
tion toward the door station 12÷24Vdc-60mA
0 From the jumper with F when the terminal 14
is powered to 12Vdc (terminal 8 of the monitor)
Note
If it is necessary to adjust the volume of the
intercommunicating audio turn trimmer R5.
24
(GB- '99)
1471. RELAY UNIT.
A low voltage, low current (DC/AC) unit, it
can switch voltages up to 50Vac/dc and 5A
max. Used for auxiliary services (e.g. stair
lights, call for 4 or more bells, door release
etc).
It installs on DIN bar or with two screws. In
housing DIN bar 3 modules A.
Terminals
1 13Vac input
2 24Vdc input
3 Ground
5 Common relay
6 Relay contact - ON
7 Relay contact - OFF
Interruption of the control switching
ON in multi-way systems with 2 or
more audio-video entrances.
To have such a service it is necessary to
connect a universal relay art.1471 for only
control switch-ON.
Wire for control switch-ON
from monitor.