Cisco ISA3000-4C-K9 Hardware Installation Manual page 42

Connecting Alarm Circuits
Figure 3-7 Inserting Wires into the Alarm Connector (Alarm Input Circuit)
1
Step 5
Use a ratcheting torque flathead screwdriver to tighten the alarm connector captive screw (above the
installed wire leads) to 2 in-lb (0.23 N-m).
Note
Do not over-torque the power and alarm connectors' captive screws. Do not exceed 2 inch-lbs (0.23 N-m)
torque.
Step 6
Repeat the above steps to insert the input and output wires of one additional external alarm device into
the alarm connector.
Figure 3-8
wired as an alarm input circuit; the IN1 and REF connections complete the circuit. The second alarm
device circuit is wired as an alarm output circuit that works on a normally open contact basis; the NO
and COM connections complete the circuit.
Cisco ISA 3000 Industrial Security Appliance Hardware Installation Guide
3-42
1
2
IN1 - External device connection 1
shows the completed wiring for two external alarm devices. The first alarm device circuit is
Chapter 3
2
REF - External device connection 2
Connecting the ISA 3000