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Si 121L/5M
5 INTERCOMMUNICATING INTERCOMS CONNECTED TO 2 EXTERNAL DOOR STATIONS WITH COMMON CALL. ELECTRONIC
BELL FOR INTERNAL CALLS.
Q.ty
Article
...
PT520
...
PT501
...
SR40
1
PRS226
1
1473
2
PA **
2
SE **
Door station series Mody
2
MD71
2
MD11
2
MD81
2
MD91*
2
MD30
Door station series Matrix
2
MA71
2
MA11P
2
MA61
... Refers to number of users (see table).
* Rain shelters are used instead of back boxes and hood
covers.
** Articles not supplied by ACI Farfisa.
Working instructions
As the basic system described on page 27, with the
following variations:
- The audio functions and door lock opening are automati-
cally switched to the door station which has made the call
and remain in this state until a call from another entrance
is received.
Notes
- For the connection of name-plate lamps, read notes 6
and 7 of the installation instructions on page 26.
- For wires dimensioning refer to the installation recom-
mendations and table on page 26.
- For other types of push-button panels see pages 22 and
23 or the general catalogue.
P
R
O
J
E
C
T
Description
Project series modular intercom
Single button unit
Electronic bell module
Power supply-switcher
Exchanger
Door release push-button (optional)
Electric door lock (12VAC-1A)
Module frames with back box
Module for electric door speaker
Hood cover
Rain shelter with module frames
Electric door speaker (amplifier)
Module frames with back box
Module with integrated audio amplifier
Front frame
In intercoms cut the jumper W1 that connects
terminals 3 and 7 and apply:
- the electronic buzzer SR40 by connecting wires 7
- or use the buzzer SR41 by connecting terminals 3
In all intercoms connect one
of the two terminals of the sin-
gle button unit to terminal 7.
Table for choosing intercoms and accessories for the required type of
installation
Number of inter-
communicating
PT520
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
52
(MT12 - Gb2004)
and 9 to the intercom terminals 3 and 9,
of buzzer and intercom together and by connecting
the call wires to terminal 4 (instead of terminal
as shown in the diagrams).
Project
Application dia-
PT501
SR40/SR41 gram on page:
0
2
3
3
8
4
15
5
24
6
35
7
48
8
63
9
80
10
* upon request
66
66
66
53
67
67
*
*
*
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