Rockwell Automation 1783-BMxxx Stratix 5700 Ethernet Managed Switches User Manual - Manual (Page 50)

50 Rockwell Automation Publication 1783-UM004E-EN-P - June 2014
Chapter 2 Switch Installation
The labels for the alarm relay connector are on the switch panel.
To wire the switch to an external alarm device, follow these steps.
1. Loosen the captive screws that hold the alarm relay connector on the
switch, and remove the connector from the switch chassis.
2. Measure two strands of twisted-pair wire (18…20 AWG) long enough to
connect to the external alarm device.
Choose between setting up an external alarm input or output circuit.
3. Use a wire stripper to remove the casing from both ends of each wire to 6.3
mm (0.25 in.) ± 0.5 mm (0.02 in.).
Do not strip more than 6.8 mm (0.27 in.) of insulation from the wires.
Stripping more than the recommended amount of wire can leave exposed
wire from the alarm relay connector after installation.
4. Insert the exposed wires for the external alarm device into the connections
based on an alarm input or output circuit setup. See Table 1 on page 50 .
Table 1 - Alarm Relay Connector Labels
Label Connection
NO Alarm Output Normally Open (NO) connection
COM Alarm Output Common connection
NC Alarm Output Normally Closed (NC) connection
IN2 Alarm Input 2
REF Alarm Input Reference Ground connection
IN1 Alarm Input 1
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