38
BASIC INSTALLATION WITH ELECTRONIC CALL
4+N SYSTEM
Basic circuit diagram of door entry system installa-
tion in buildings with a single entrance.
Operation
When one of the push buttons on the entrance
panel is pressed the electronic call signal generated
by the audio unit (7) is sent via the call line to the
corresponding telephone (5), where it is heard on
the loudspeaker of the handset. At the same time the
audio unit’s own loudspeaker generates a sound to
confirm to the visitor that the call has been made.
When the handset is picked up the electronics
associated to the telephone’s audio lines (3 and 4) is
internally connected to the entrance panel. This co-
nnection sets up the communication between the tele-
phone and the entrance panel.
When the door lock release opener button on the
telephone is pressed, the audio unit detects the clo-
sing of the lock release circuit (1). The audio unit then
sends an a/c voltage (11 and 12) to the electric
lock, thus allowing the entrance door to be opened.
The common wire (2) of the telephone and entran-
ce panel provides the return path for all the telepho-
ne signals.
V230 V230 V
4+N
TEL-001
ALA-040
ABR-001
5
2
2
5
5
5
V
MAN-010
MPD-004
MATERIAL REQUIRED
MPS-/MPD Push button panel
module (depending
on characteristics of
the installation)
9670001 MAN - 010 Entrance panel
module with electro
nic audio unit 4+N
system
9600001 TEL - 001 Electronic telephones
9620001 ALA - 040 Power supply
9730000 ABR - 001 Electric lock (other
models available)
CMO Flush-mounted box
(depending on cha-
racteristics of the
installation)
4+N SYSTEM CIRCUIT DIAGRAMS
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