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90
(MT12 - Gb2004)
I
NTERCOMS
*
V
IDEOINTERCOMS
*
T
ELECOMMUNICA
TION
3 "
2
/
1
89
2 "
16
/
15
74
5 "
2
/
1
140
3
"
2
/
1
89
2
"
16
/
9
65
4
"
4
/
1
107.5
3
"
2
/
1
89
2
"
16
/
9
65
2
"
8
/
1
54
1443E
1282E
POWER SUPPLY AND CONTROL UNIT
2443. AMPLIFIER-SWITCHER FOR INTER-
COMMUNICATING SYSTEMS.
It is suitable for video intercom systems where
it is necessary to have the intercommunicating
service in different flats with privacy towards
both outside and other users. Use one 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
videointercoms
12a Audio output from door station (transmitter
channel)
13
Connection towards the loudspeaker of the
videointercoms
13a Audio input from the door station (receiver
channel)
14
Timed power supply for audio connection
toward the door station 12÷24Vdc-60mA
0
To connect to terminal F when the terminal
14 is powered to 12Vdc (terminal 8 of the
videointercom)
Note
If it is necessary to adjust the volume of the
intercommunicating audio turn trimmer R5.
1382. AUDIO-VIDEO TIMER.
Connected to the stabilized power supply
art.1281, it allows a videointercom system to
be timed (50 seconds).
It also allows time to be increased during a
conversation (3 minutes), automatic power OFF
at the end of the conversation; switching ON of
one videointercom at a time. By adding the
intercommunicating module art.1443E on the
proper connector, an intercommunicating op-
eration with privacy towards the external
speaker is obtained.
Technical data
Turn ON time:
-50 sec. with handset replaced
-3 min. with handset lifted
Operating temperature
0°÷+50°C
Maximum permissible humidity 90%RH
Housing
DIN 6 modules A
Terminals
I
Logic command output of timing 0/5Vdc
+
Positive voltage input 18÷28Vdc-2A
-
Ground
A Alternating voltage input-output 13Vac-1.6A
D Alternating voltage output for the common of
push-button 13Vac-0.5A (intermittent service)
H Timed positive voltage output for the camera
unit 18÷28Vdc-0.5A max.
F
Ground
1
Transmitter audio channel input 4.5Vdc-10mA
2
Receiver audio channel input 2Vdc-16mA
3
Positive voltage output 8Vdc-0.1A
S Electronic door lock release 1A
4
Control switching ON input from the video-
intercoms 5.5Vdc-90mA
9
Door lock release command 50mA
11 Audio ground
12 Transmitter audio channel output 4.5Vdc-
10mA
13 Receiver audio channel output 2Vdc-16mA
14 Timed positive voltage output for the video-
intercoms 18÷28Vdc-1.5A max.
1281. STABILIZED POWER SUPPLY WITH
SWITCHING REGULATOR.
Connected to the timer art.1382, allows to drive
at low voltage a videointercom (or 2 in parallel
in FLAT type), a camera unit with a solid state
sensor (CCD), electric door lock, name plate
lights, etc.
Technical data
Input voltage 127 or 220-230Vac
Frequency
50/60Hz
Power
48VA
Operating temperature
0°÷+40°C
Maximum permissible humidity 90%RH
Housing
DIN 8 modules A
Weight
0.95Kg.
Approved by
VDE according to safety
standard EN60065
Terminals
A Output voltage 13Vac for:
-name plate light, exchangers and climatized
camera (continuous service 0.6A)
-electric door lock and bells (intermittent serv-
ice 1A)
-
Ground
+
Continuous output 21Vdc-1A (timed opera-
tion)
I Logic command input from timing
0 = activated
+5Vdc = non activated
Note
- The power supply is not provided with fuses,
but all of its outputs are protected against over-
loading and short circuiting by temperature
sensors. To reset the power supply, power
must be cut off for about one minute and can be
restored after having eliminated the defect.
- The power supply must be installed in a dry
place and can be fixed on DIN bar or on a wall
by using the expansion plugs.
- The connection between power supply 1281
and timer 1382 is not to be longer than 25cm.
Use the trimmer to adjust the intercommunicat-
ing volume.
art.1443E
SERVICE MODULES
12a
AMPL.
13a
F
0
B
13
14
R5
12
1443E
1382
1443E. Intercommunicating module.
Added inside the timer art.1382, it allows for
the intercommunicating function with privacy
towards the external speaker.