Aiphone LEF-3L manual System Outline & Components, Precautions on Installation & Wiring

2SYSTEM OUTLINE & COMPONENTS (Cont.)

LE-D/LE-DA TERMINAL DEFINITIONS:

１Station number

ＥCommon communication

－Negative

*LS-NVP/C TERMINAL DEFINITIONS: Red Station number

Black Common communication

Green Negative

*LE-SS(R)/LE-SS-1G COLOR CODE: Red Station number

Black Common communication

Green Negative

* North America only

■Precautions on Installation & Wiring

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.

·Any other manufacturer's products installed with this system (power supply, external signaling device, etc.) are not covered under Aiphone's warranty.

·When using a power supply that has no GROUND terminal, install a surge arrestor near the output as shown.

·Additional surge arrestors can be installed to protect communication lines. One surge arrestor per 2 wires on each master station.

Install a surge-arrestor

at a location closest to the unit, taken to earth ground.

PS-1225/UL/SLEF-3L PS-1215DIN

Surge- arrestor

Grounded

DC 12V

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