signal. An alarm output and the common wiring connection are required to complete a single alarm output
circuit.
The labels for the alarm connector are on the switch panel and are displayed below.
ConnectionLabel
Alarm Output Normally Open (NO) connectionNO
Alarm Output Common connectionCOM
Alarm Output Normally Closed (NC) connectionNC
Alarm Input 2IN2
Alarm Input Reference Ground connectionREF
Alarm Input 1IN1
The input voltage source of the alarm output relay circuit must be an isolated source and limited to less than
or equal to 24 VDC, 1.0A or 48VDC, 0.5A.
Caution
To reduce risk of electric shock and fire, the alarm ports must be connected to an IEC60950/IEC 62368
compliant limited power source.
Caution
Wire connections to the power and alarm connectors must be UL- and CSA-rated, style 1007 or 1569
twisted-pair copper appliance wiring material (AWM) wire.
Note
To wire the switch to an external alarm device, follow these steps:
1. Remove the captive screws that hold the alarm connector on the switch, and remove the connector from
the switch chassis.
Switch Installation
21
Switch Installation
Wiring the External Alarms
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