Aiphone LEF-3L - Multi-Master System Wiring Example; Three Masters, One Sub Station; Master-to-Sub Wiring (No Inter-Master); Parallel Method Application

– 8 – – 9 –
Three master stations + one sub station with full communication between all stations and
door release
Master to Sub intercom and door release, no master to master communication
PS12
PS-1225/S/UL, PS-1215DIN
Installing surge arrestors
· Surge protection for the intercom equipment is recommended. Add
SA-1 surge arrestors for the power supply, plus one per two wires
connected to the master station.
· When using a power supply with no GROUND terminal, install a surge
arrestor near the output.
· Additional surge arrestors can be installed to protect communication
lines. One surge arrestor per 2 wires on each master station.
PS-1225/S/UL
PS-1215DIN
LEF-3L
12V DC
Surge
arrestor
Grounded
Install a surge arrestor
at a location closest to the unit,
taken to earth ground.
3
2
C
E
-
R
Y
+
1
White
Brown
-
+
3
C
1
E
-
R
Y
+
2
White
Red
C
2
1
E
-
R
Y
+
3
White
Orange
Red Brown Brown
Orange Orange Red
E
-
1
Power Source
for door srrike
Yellow
Black
Door strike
RY-PA
Notes:
#1 from a sub can go to 1 , 2 or
3 but never C .
At M1, push 1 to answer doo r .
At M2, push 2 to answer doo r .
At M3, push 3 to answer doo r .
“M1”
LEF-3L
“M2”
LEF-3L
“M3”
LEF-3L
LE Series / door station
LE-D/LE-DA only
PS12
-
+
3
2
1
E
-
C
Y
+
R
White
Red
Brown
Orange
White
Red
Brown
Orange
White
Red
Brown
Orange
3
2
1
E
-
C
Y
+
R
3
2
1
E
-
C
Y
+
R
1
E
-
1
E
-
1
E
-
RY-PA
RY-PA
RY-PA
for door 1
LEF-3L LEF-3L LEF-3L
LEF-3 L “Parallel Method ”
for door 3
for door 2
Black
Black
Black
LE Series / door station
LE-D/LE-DA only
PS12
LE Series / door station
LE-D/LE-DA only
LE Series / door station
LE-D/LE-DA only