Cisco IE-4000-4TC4G-E Hardware Installation Manual page 44

Connecting Alarm Circuits
Repeat
Step 6
into the alarm connector.
Figure 2-14
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.
Figure 2-14
1
2
Attaching the Alarm Connector to the Switch
Failure to securely tighten the captive screws can result in an electrical arc if the connector is
Warning
accidentally removed. Statement 397
Warning When you connect or disconnect the power and/or alarm connector with power applied, an
electrical arc can occur. This could cause an explosion in hazardous area installations. Be sure
that all power is removed from the switch and any other circuits. Be sure that power cannot be
accidentally turned on or verify that the area is nonhazardous before proceeding. Statement 1058
Cisco IE 4000 Switch Hardware Installation Guide
2-26
Step 2 through Step 5 to insert the input and output wires of one additional external alarm device
shows the completed wiring for two external alarm devices. The first alarm device circuit is
Completed Connections for Three External Alarm Devices on the Alarm Connector
1
2
IN1 wired connection
REF wired connection
3
4
3 COM wired connection
4 NO wired connection
Chapter 2 Switch Installation