Farfisa ST 4231, Technical Manual

Page: 66 / 259

64
(MT11 - Gb2006)
Si 221L/5S
I
NTERCOMS
*
V
IDEOINTERCOMS
*
T
ELECOMMUNICA
TION
5 INTERCOMMUNICATING INTERCOMS CONNECTED TO 2 EXTERNAL DOOR STATIONS WITH COMMON CALL
Q.ty Article Description
... ST 720W Studio series modular intercom
... ST 701 Single button unit
... ST 704 Additional loudspeaker
1 PRS226E Power supply-switcher
1 1473 Exchanger
... PRS210 Transformer
... RL 37 Relay module
2 PA ** Door release push-button (optional)
2 SE ** Electric door lock (12VAC-1A)
Door station series Mody
2 MD71 Module frames with back box
2 MD11 Module for electric door speaker
2 MD81 Hood cover
2 MD91* Rain shelter with module frames
2 MD30 Electric door speaker (amplifier)
Door station series Matrix
2 MA71 Module frames with back box
2 MA11P Module with integrated audio amplifier
2 MA61 Front frame
2 MA91* Rain shelter with module frames
Door station series Profilo
2 PL71 Module frames with back box
2 PL11P Module with audio amplifier
... 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 36, with the following variations:
- The audio functions and door lock opening are automatically switched to the door station which
has made the call and remain in this state until a call from another entrance is received.
Notes
- Do not forget to connect terminals C of the additional buttons and install the ST704 speaker
module in every intercom.
- For the connection of name-plate lamps, read notes 6 and 7 of the installation instructions on
page 35.
- For wires dimensioning refer to installation instructions and table on page 35.
- For other types of push-button panels see pages 30 and 31 or the general catalogue.
ST 720
5 1 9 2 3 0
P1
P2
C
P
C
P
JP2
9A 3A
ST704
S
T
U
D
I
O
Table for choosing intercoms and accessories for the required type of installation
Number of inter- Studio Application dia-
communicating ST 720W ST 701 ST 704 RL37 PRS210 gram on page:
2 2 2 2 0 0 78
3 3 6 3 0 0 78
4 4 12 4 1 1 78
5 5 20 5 1 1 65