Aiphone LAF-3A - Manual (Page 3)

WIRING
Lay out your system in advance. Determine the exact location of each station. Make a sketch showing the number of
wires required from each station to other stations. Assign station numbers at this time.
Begin your installation with master station #1. All masters included in your system should be connected and tested
before beginning sub station installation. A space is provided at the left of the diagram to write in your color code. Note the
position of C terminal on each master station. Be sure you wire each station correctly.
After installing your second station we recommend the power supply be connected to plus and minus and a test be made
for all functions calling and talking between each station. Unplug power supply while making connections.
Refer to the chart below and select the proper wire gauge to meet your requirements.
AWG WIRE SIZE 24 AWG 22 AWG 20 AWG 18 AWG
DISTANCE 400' 650' 1000' 1600'
DIAMETER OF WIRE 0.5 mm 0.65 mm 0.8 mm 1.0 mm
DISTANCE 120m 200m 300m 480m
LAF-3A/A ALL MASTER SYSTEM USING PS-12A (or PS-I2C) POWER SUPPLY
STATION
1
LAF-3A/A
STATION
2
LAF-3A/A
STATION
3
LAF-3A/A
* Locate a power supply near center of the system. LCf-
AC 12V DC
PS-12A or PS-12C
POWER SUPPLY
SUB STATION INSTALLATION INFORMATION
LA-A, LA-AN and LA-D/DA: Before attempting to install, remove the shorting link
attached to terminals E and © on LA-A, LA-AN and LA-D/DA sub stations. Connect
E, © and #1 terminals on sub station to E, 0 and number terminals on master
station.
/ LA-A3 and LA-AN3: Extend 5 conductors from LA-A3 or LA-AN3 to E, © and
number terminals on first master station and then remainning 2 conductors to number
terminals on second and third master stations. Do not wire in a home-run manner.
STATION
4
LAF-3A/A
LA-A & Jumper
LA-AN j remove .
©@e
LA-D
i
01
i
0
♦
REMOVE
Jumper
© © ©
LA-A3 & LA-AN3
-
3