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3 WIRING DIAGRAMS (Cont.)
1 LEF-3L, 2 Door Stations -
Shown with both Door Release and CCTV Camera Call-up relays
1
E
-
LE-D/
LE-DA
LEF-3L
1
2
3
C
E
-
+
R
Y
Wht
Brn
Red
Org
PS-1225UL
-
+
NOTE:
This diagram shows separate E
& - wires. In single master
system only, one wire can be
used for E/- when jumper
remains attached between E & -
on master and door stations.
Yel
RY-PA
Cam. #2
Blk
B
RY-PA
Dr. #1
Blk Yel
A
* Diode
* Diode: 1N4001 value.
Required for door strike relay
only when 2 relays are used
on any one channel.
Yel
RY-PA
Dr. #2
Blk
A
RY-PA
Cam. #1
Blk Yel
B
1
E
-
LE-D/
LE-DA
* Diode
B
A
Momentary dry closure when station
is selected and "key" button is
pressed.
Connect to door strike & power.
Constant closure as long as station is
selected.
Pg.6
4 TROUBLESHOOTING GUIDE
ENTRY # PROBLEM POSSIBLE CAUSE SOLUTION
1
Door station does not call in (no call tone
or LED light).
Missing jumpers
Are there 2 or 3 conductors run to the door station? If 2 wires, jumper must remain attached between
E and - at both the door station and the master station. Replace jumper. In a multi-master system, the
E/- jumper should be removed and 3 wires should be connected.
2
Door station does not call in (no call tone
or LED light) -- 3-wire connection.
Missing connection of - terminal.
If communication works, check connection between - terminal of door station and master. Test call-in
at master station by touching a jumper wire between # and - terminal of master. If this rings the tone
and lights the light, the - wire from the door station is not connected properly.
3
Door station does not call in (no call tone
or LED light) -- 3-wire connection.
Mis-wiring of 1 and E terminals. Check that the 1 and E wire are not reversed. If they are, communication will work but call-in will not.
4 No communication to door station. Mis-wiring of E terminal.
Communication is between the 1 and E terminal of the door station to a # and E terminal of the
master station. If call-in works, check the E wire for continuity. Check the 1 and - wires at the sub to
ensure that they are not reversed.
5 No master-to-master communication.
C terminals mis-wired between
masters.
Communication between masters is carried on the # wire of the calling master to the C terminal of the
receiving master. Verify that the C terminal of the master that is being called is actually wired to the #
terminal that is being selected on the calling master.
6
LEF master has no communication or
tone, but LED lights work.
Wrong power supply is being used.
The LED lights will operate with a power source from 6VDC - 24VDC. The amplifier in the LEF unit
will only work when the system is supplied 12VDC. Proper power supply is the PS-1225UL.
7
Feedback when the volume control is
turned up over halfway.
E/- jumpers attached in a multi-master
system.
Remove E/- jumpers on masters and door stations in the system, provided there are 3 wires to the
sub(s). If the sub only has 2 wires in a multi-master system, the jumper must remain in place for the
door call-in to work. In this case, the side effect is the feedback problem when the audio volume is
turned up. The only alternative is to run the proper wire to the door station(s) and remove all of the
jumpers.
8
New installation has AC buzz, noise, or
hum in system.
Too close to AC and/or incorrect wire
was used.
If the units are too close to an AC source such as AC wiring or dimmer switches, move the intercom
at least one stud space away from the AC source. Other precautions include using shielded cable. If
shielded wire was used and there is still AC noise, tie all the shields together and ground to an earth
ground or negative on the power supply. If more than one jacketed cable was used between masters,
make sure the # terminals, C terminal, and the E terminals are all in the same jacketed cable. If
multiple cables were used, include an E wire in each cable that carries a station number wire in it.
9 Door release does not work. Miswire or lack of RY-PA relays.
Check the WHITE wire coming out of the PC board for voltage. When depressing the key button,
12VDC is present across WHT and negative, which activates the relay. Ensure that the black wires of
the RY-PA are connected to WHT and either the BRN, RED, or ORG wire for selective door release
(which provides selective ground when the corresponding channel is selected).
10
No call tone between masters.
No Privacy feature on LEF-3L.
Features not available
The LEF-3L unit does not have the PRIVACY feature or the ability to send a call tone to another
master station (as with the standard LEF-3). This function is removed to allow the switch to be used
for door release instead of privacy.
11
Can't release the door from the 2nd
(additional masters)
Wiring not connected properly.
If door release works from the first master but not another(s), verify that selective door release wires
are connected between masters. (WHT, BRN, RED, ORG). RY-PA's are only required at one master.
12
External Signaling device doesn't
activate RY-AC mis-wired
Make sure that the WHITE wire of the RY-AC is connected to the # terminal that is to be activating
the relay, and that RED and BLK are connected to + and -, respectively.