Aiphone LEF-3L - Wiring Diagrams and Rules; Sub-to-Master Station Wiring; Master-to-Master Communication Wiring; Master-to-Sub Station Wiring (No Inter-Master)

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SYSTEM OUTLINE & COMPONENTS (Cont.)
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Call tone adjustment
3-position volume switch, located under Operation plate.
Adjusts call tone volume to low (far left), medium, high (far right).
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Selector switch for Call Tone in Occupied Mode
LEF surface mount master stations are set in the "B" position from
the factory. This allows a sub call-in tone to be heard at a muted
level while the master is in the occupied mode.
“A” position: Mutes call tone at master while system is in
occupied mode.
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“B” position: Call tone is heard when master is in occupied
mode.
*No call tone between masters.
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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 stations in the system.
Use the gauge specifi ed for the maximum distance between the two farthest stations.
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Power supply
The entire LEF system can be powered by one power supply (PS-1225UL/PS-1225S 12VDC 2.5A or PS-1215DIN
12VDC 1.5A), located near the center of the wire run.
For a system including the All Call and Chime with the BG-10C, one PS-1225UL(S) or PS-1215DIN will power the BG-
10C and the LEF system.
CALL
3-pos. call tone vol. switch
(under Operation plate)
LEF-3L
(FRONT CASE BACK VIEW)
A
B
(when shipped)
LEF-3L
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