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Application diagrams
APPLICATION DIAGRAMS FOR INTERCOMMUNICATING SYSTEMS WITH COMMON ALTERNATE CURRENT CALL FROM EXTER-
NAL STATION AND ELECTRONIC CALL FOR EXTENSIONS
- To match with diagrams: Si 111L/5M; Si 121L/5M; Si 131L/5M
2 INTERCOMMUNICATING INTERCOMS
to power supply
In intercoms cut the jumper W1 which connects terminals 3 and 7
and apply the electronic buzzer SR40 or SR41 (for the application see
the drawings on the page that illustrates the electrical diagram to be
realised).
4 INTERCOMMUNICATING INTERCOMS
P
R
O
J
to power supply
E
C
T
CT1
CT2
1
1
2
2
9
9
3
3
6
6
5
5
7
7
1
P1
P1
SR40
PT520+
PT520+
SR40
SR40
CT1
CT2
1
1
2
2
9
9
3
3
6
6
5
5
7
7
P1
P1
P2
P2
P3
P3
PT520+
PT520+
PT501+
PT501+
SR40
SR40
one-way intercommunicating services
3 INTERCOMMUNICATING INTERCOMS
to power supply
In intercoms cut the jumper W1 which connects terminals 3 and 7
and apply the electronic buzzer SR40 or SR41 (for the application see
the drawings on the page that illustrates the electrical diagram to be
realised).
CT3
CT4
1
1
2
2
9
9
3
3
6
6
5
5
7
7
1
P1
P1
P2
P2
2
P3
3
P3
SR40
PT520+
PT520+
PT501+
PT501+
SR40
SR40
In intercoms cut the jumper W1 which connects terminals 3 and 7
and apply the electronic buzzer SR40 or SR41 (for the application see
the drawings on the page that illustrates the electrical diagram to be
realised).
66
(MT12 - Gb2004)
CT1
CT2
CT3
1
1
1
2
2
2
9
9
9
3
3
3
6
6
6
5
5
5
7
7
7
P1
P1
P1
P2
P2
P2
PT520+
PT520+
PT520+
PT501+
PT501+
PT501+
SR40
SR40
SR40
1
2
SR40
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