FARFISA INTERCOMS ECHOS, Техническое руководство

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183
(MT11 - Gb2012)
4+1
INTERCOMS
*
7+1
VIDEOINTERCOMS
ADDITIONAL BELL
If the ringing volume is not sufficient or if you need to chime the call in a
different place, you can add an additional bell enabled by a relay.
Additional bell enabled by a relay to be installed inside the
intercom
12 ÷ 48Vac/dc
intercom
terminals
power supply
terminal
intercom
terminals
Additional bell enabled by a relay in a DIN
housing
12Vac/dc ÷ 230Vac
Application diagrams
ADDITIONAL AUDIO AMPLIFIER
In intercommunicating systems with long distances between intercoms
and power supply, to increase the intercommunication audio level, it is
advisable to install an amplifier art. 2443 (see page 144 for character-
istics). The following diagram can be applied to all intercommunicating
systems (from page 167 to page 173).
WORKING INSTRUCTIONS
Basic systems
For all the intercom systems, simply lift the handset to speak to the door
station. The call is indicated by a sound signal on the loudspeaker of the
handset. If the handset of the intercom is not properly hung-up the sound
is not reproduced.
To activate the door release, press the push-button with the key symbol.
In systems with two or more entrances the communication and door
release are switched automatically on the entrance from which the call
is made while the other entrances are isolated.
Systems with private conversation module
In all standard intercom systems (not intercommunicating) a private
audio system can be provided (only the intercom which has been called
can speak to the door station) by installing the “private conversation
module” art.SM50E in every intercom.
After the call, the user has about 30 seconds to lift handset and answer.
There is no time limit for the private conversation. When the handset is
replaced the system returns to the OFF condition. If a user does not
replace the handset properly, the next call from another intercom,
automatically cuts him out of the audio connection with the door station.
Intercommunicating systems
Intercommunicating systems allow users to speak to one another by
simply lifting the handset; any user can join in to a conversation already
in progress.
To avoid interference it is necessary to observe the following instruc-
tions:
- lift the handset;
- make sure that there is not a conversation already in progress;
- then press the call push-button corresponding to the desired user.
Intercommunicating systems connected to door station
Such systems allow conversation between two or more inside users with
the exclusion of the door station, or between one inside user and the
door station.
When there is a call from an external push-button panel the audio line of
the electric door speaker is activated automatically; when a call is made
from one of the intercoms, the internal intercommunicating audio line is
automatically activated.
The user called has simply to lift the handset.
Any user can join in to a conversation already in progress.
To avoid interference it is necessary to observe the following instruc-
tions:
- lift the handset;
- make sure that there is not a conversation already in progress;
- then press the call push-button corresponding to the desired user.
Internal calls have a different sound (continuous tone) from external calls
(modulate tone or electronic buzzer).
To actuate the electric door lock you must press the button with the key.
230V 127V
0
C+ D Y
PRS226E
G 2 7
12
13
F
14
X
B
12a
13a
2443
In some dia-
grams termi-
nals A or 9) are
used.