Cable requirements, Power supply, Wiring diagrams – Aiphone LEF-3 User Manual
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LEF all-master systems are designed to be wired in a looped fashion from the first to last master. Number of conductors for a full
system (not including “K” terminals) are:
■ LEF all-master configurations
Model
Cable
Wire number
LEF-3
9 conductors
#822210 in USA
LEF-5
12 conductors
#822212 in USA
LEF-10
17 conductors
#822220 in USA
LEF-10S
20 conductors
#822220 in USA
LE Subs
3 conductors
#822203 or #821803 in USA
• Single-master system can be wired with 2 conductors homerun from each
sub. (Wire #822202 or #821802 in USA)
■ Cable requirements
Use multi-conductor cable with an overall shield, non-twisted, 22AWG to 18AWG (0.65mm to 1.0mm), to accommodate the
maximum number of LEF master stations, LE subs, audio or PanTilt door(s), or 8i2 paging zones, each of which requires one
designated wire.
■ Power supply
Entire LEF system can be powered by one PS-12C (or PS-12A) power supply, located near the center of the truckage cable.
For a system including All-Call, Chime, & Music with the BG-10C, use a PS-12F power supply (12V DC, 2.5A) to power the entire
system.
Wiring diagrams
' LEF-3 with 2 Subs, 1 Door,
and External Signalling
LEF-3
★ Shorting link on E - - terminals
must remain attached on all units.
13^ ■ PS-12C or PS-12A
• Two LEF-3 and 2 Doors
LEF-3
LEF-3
* Shorting link E - - terminals
is removed on all units.
I: PS-12C or PS-12A