Altec Lansing LEF-3L User Manual

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LEF-3L

3-Call Master Station with Selective Control Capability (Door Release or Camera Call-up)

Used with LE-D, LE-DA, LE-DL, LS-NVP/B Door Stations

- SUPPLEMENT TO LEF INSTRUCTIONS -

The LEF-3L is a compact, wall or desk mount master station able to selectively release a door or call up a camera.
Used with any LE- or LS-series remote station, communication can be established with each station by selecting
the channel on the master station. While the channel is selected, pressing the door release button (left of TALK
button) will release only the associated door. When used for camera call-up, a relay closure will be maintained as
long as a station is selected. The system can have up to four stations, in any combination of masters or door
stations (e.g. 2 masters and 2 doors). Master-to-master communication is also a standard feature.
(If communication between masters is not required, multiple LEF-3L's can be used to talk to 3 door stations.

1 NAMES & FEATURES

Speaker

Microphone

Station Call-in LEDs

Occupied LED

Station Selectors

TALK Button

OFF Button

Voice

Volume Control

FEATURES:

· Selective door release control

· CCTV camera call-up capability

· Single or multiple masters can be used in a system

· Master to master communication in a multi-master system

· Single talkpath, with push-to-talk operation at master, and hands free communication
at sub station

· Large variety of sub stations available

- Surface or flush mount, with or without privacy (LE-A, LE-AN, LE-B, LE-BN)

- Weather resistant door stations (LE-D, LE-DA, LE-DL)

- Vandal proof sub station (LS-NVP/B, and optional SBX-DGV surface mount box)

· Subs call in with momentary tone and LED, remaining lit for approximately 20 seconds

· Selective calling to sub stations

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Door Release

Button

2 COMPONENTS & WIRING

Individual Components for LEF-3L System:

LEF-3L 3-call master with selective door release
LE-D Surface mount door station
LE-DA Flush mount door station with stainless steel faceplate
LE-DL Surface mount metal door station with illuminated directory
LS-NVP/B Vandal and weather resistant sub station
SBX-NVP Surface mount box for LS-NVP/B
SA-1 Surge Arrestor (1 per 2 wires being protected)
RY-PA Relay, 12V DC input, N/O dry closure output.

One required for each contact closure required
off of each channel. Can be momentary or maintained,
according to wiring.

PS-12C 12V DC power supply, 1 per system

LEF-3L TERMINAL DEFINITIONS:

+ Positive 12V DC

- Negative
1~3 Station number, communication to sub or other master
C "CALL", for receiving a call from another master station
E Common communication
R Occupied light control (0V DC when system is occupied)
Y All Call override control (Not used in LEF-3L system)

Color-coded Wires:

White Common Door release activation

(12V DC when door release button is pressed)
Brown Negative when station 1 is pressed
Red Negative when station 2 is pressed
Orange Negative when station 3 is pressed

WIRING & INSTALLATION:
Before Installation:

· Make sure you have the proper power supply(ies) and all necessary and compatible equipment for the system.

· Lay out your system in advance, assigning station numbers for all sub station locations.

· 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.

Wire:

· Shielded wire is strongly recommended. Use the proper gauge for the distance being run.

· Wiring between masters must be a multi-conductor cable. If more than one cable is used to connect masters,
the "E", "C", and number terminal wires must be in the same jacketed cable. If necessary, run multiple "E"
wires, one in each cable.

Wiring Method:

· Run intercom cables at least 20" away from all AC wiring, fluorescent lights, dimmer switches, and other

electrical or electronic devices. Intercom wiring can cross AC wires at 90 degrees.

· Sub stations can be homerun to the nearest master station, or daisy-chained. If daisy-chained, include 2
common wires plus 1 individual wire per station on the run.

· In a SINGLE MASTER SYSTEM ONLY: Subs can be wired with 2 conductors homerun. Jumpers between "E"
and "-" must be attached on all subs and at the master station.

Intercom Locations:

· Do not install intercoms near dimmer or light switches, or other electrical wall devices.

· To prevent feedback, do not place sub stations back-to-back on a common wall.

LE-D/LE-DA TERMINAL DEFINITIONS:

1 Station number
E Common communication

- Negative

LS-NVP/B TERMINAL DEFINITIONS:

Red Station number
Black Common communication
Green Negative

LE-DL TERMINAL DEFINITIONS:

1 Station number
E Common communication
+ Positive

- Negative

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