Aiphone LEF Series Instructions Manual page 9

WIRING DIAGRAMS - Applications
( 1 ) LEF-3C audio communication system
No.
1
2
3
4
All-Master system
1
MASTER
① ②
LEF-3C LEF-3C
C
1
2 C
3 3
1 2
E E
R R
Y Y
+ +
- -
Intermixed System
3
MASTER
①
LEF-3C
AUDIO
DOOR
STATION
LE-DA
C
1
2
1 3
E E
R
Y
+
- -
PS-1208UL / PS-1208BF /
PS-1208S / PS-1208
POWER SUPPLY
In Intermixed System.
Remove the shorting link on all stations
as 3 wires are required to each sub.
SYSTEM
All-Master system
with one door station
Intermixed system
Single-Master system
③ ④
LEF-3C LEF-3C
1 1
2 2
C 3
C
3
E E
R R
Y Y
+ +
- -
+
PS-1208UL / PS-1208BF /
-
PS-1208S / PS-1208
G
POWER SUPPLY
②
LEF-3C
SUB
LE-B, BN
1
C
2 1
3
E E
R
Y
+
- -
+
-
G
MASTER DOOR (audio)
4
3 1
2 1
1 1
All-Master system w/one door station
2
AUDIO
DOOR
STATION
LE-DA
1
E
-
Single-Master system
4
AUDIO
DOOR
STATION
LE-DA
1
E
-
In single-master system.
If using 2 wires to each sub, shorting link
MUST REMAIN ATTACHED on all stations.
If using 3 wires to each sub, remove
shorting link on all stations.
- 9 -
ROOM SUB
1
2
MASTER
① ②
LEF-3C LEF-3C
C 1
2 C
3 3
1 2
E E
R R
Y Y
+ +
- -
+
PS-1208UL / PS-1208BF /
-
PS-1208S / PS-1208
G
POWER SUPPLY
MASTER
LEF-3C
SUB
LE-B, BN
C
1 1
2
3
E E E
R
Y
+ +
- - -
G
PS-1208UL / PS-1208BF /
PS-1208S / PS-1208
POWER SUPPLY
③
LEF-3C
1
2
C
3
E
R
Y
+
-
LE-B, BN
1
E
-