Publicidad
Idiomas disponibles
Idiomas disponibles
GB
DESCRIPTION
Switching module Art. 6935/A and interphone Art. 6221 have been designed for intercommunicating systems (for up to 32
interphones) with conversation privacy and digital calls.
Both articles may be individually used for intercommunicating interphone networks or for audio or video door entry systems with
power supplies art. 931 and 6680. This system allow the use of fewer conductors for intercommunicating conversations
between internal units. Moreover the system is provided with conversation privacy during internal conversations and with con-
versation between speech unit and internal units. The maximum forseen distance between speech unit and Art. 6935/A is of
300 m. The maximum forseen distance between Art. 6935/A and the last interphone Art. 6221 is of 300 m.
Digital switching module for intercommunicating digital systems with interphones type 6221
Terminal block for switching module
type 6935/A
Terminal block description
AS-0
output 15V rectified 1A (with intermittent service)
0
earthing
15-0
output 15V AC 1A (with intermittent service)
LS
open collector output for LS auxiliary function
S1
output for relay for door lock
8
audio line
7
audio line
5
15V supply voltage
1
digital line
3
audio line
4
earthing for 15V supply voltage
C1
input for call signal (from power supply 6680 or 931)
AU
output for selfactivation (to power supply 6680 or 931)
F1
open collector output for auxiliary function F1
F2
open collector output for auxiliary function F2
B3
not used
PH
additional audio line (not used)
Z
not used
OPERATION
When the installation is activated the system audio line is activated toward the inside, thus allowing intercommunicating conver-
sations.
When a visitor press a call push-button from the entrance panel the interphones connected (those which have the connecting
wire from the entrance panel push-button to interphone terminal 6E) ring. If the user lift the handset of a called interphone the
communication is activated to the external until the conversation time expires (adjustable by the user) or until the handset is
hooked, and the audio returns to internal mode.
When an intercomunicating conversation is in progress the other interphones are engaged (red led lit) and can only activate the
forseen functions (lock release and additional functions).
The system is equipped with conversation privacy between interphone and interphone and between speech unit and interpho-
nes.
Thanks to the conversation privacy function it is not possible to intrude upon an internal conversation or conversation between
speech unit and internal unit.
8
MR3
Z PH B3 F2
MR1
F1
AU C1
MR2
4
3
1
5
7
8
MR4
S1
LS
15
0
AS
Publicidad
