Carrier-access Access Navigator Manuel d'utilisateur Page 135

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Vue de la page 134
Access Navigator - Release 1.8 August 2003 6-31
Electrical Installation
Alarm Input Connections
Alarm Input Connections
Installation Summary
n Precautions ... 6-31
n Tools and Materials ... 6-31
n Wire Alarm Input Connector ... 6-32
n Plug Alarm Input Connector into Access Navigator ... 6-34
Precautions
CAUTION! WIRE LOOP RESISTANCE MUST BE LESS THAN 8 OHMS (OR ABOUT 250
FT. OF 22 AWG ABAM CABLE) TO ENSURE DETECTION OF CONTACT CLOSURE. LONG
WIRES SHOULD BE SHIELDED TO PREVENT FALSE ALARMS FROM INDUCED VOLTAGES.
WARNING! DO NOT APPLY EXTERNAL VOLTAGE TO ALARM INPUT CONNECTOR.
T
HIS INTERFACE IS DESIGNED FOR OPERATION WITH EXTERNAL SWITCHES OR RELAYS
PROVIDING ISOLATED CONTACTS WITH MINIMUM CONTACT RATINGS OF 60V DC @ 10
MA.
Tools and Materials
Obtain the following tools and materials:
Pliers, needle nose
Cutters, diagonal
Wire stripper, 16-26 AWG
Continuity tester
Volt-ohm meter
16 to 26 AWG insulated, shielded copper wire for alarm connections, as required by standard
wiring practices.
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