Rockwell Automation Publication 1783-IN016B-EN-P - March 2019
11
Stratix 5700 Ethernet Managed Switches
Wire External Alarms
The switch has two alarm inputs and one Form C (single-pole, double-throw) alarm output relay circuits for external alarms. The input alarm relay
circuits are designed to sense if the alarm input is open or closed relative to the alarm input reference pin. The output alarm relay circuit has one
Form C relay, with one normally open (NO) and one normally closed (NC) contact. You can configure the output alarm relay as either normally
energized or normally de-energized by using the CLI.
Alarm signals are connected to the switch through the 6-way alarm relay connector. Three connections are dedicated to the two alarm input circuits:
• Alarm input 1 (IN1)
• Alarm input 2 (IN2)
• Isolated reference ground
An alarm input and the reference ground wiring connection are required to complete one input alarm circuit. You must provide either an NO or an
NC dry contact to complete the alarm circuit between reference ground and IN1 or IN2.
The three remaining connections for the Form C output alarm circuit are as follows:
• NO output
• NC output
• common
An alarm output and the common wiring connection are required to complete one output alarm circuit. The Form C output alarm relay provides
one NO and one NC dry contact.
The labels for the alarm relay connector are on the switch panel.
ATTENTION:
Do not apply an external voltage source to either the IN1 or IN2 alarm inputs. Limit alarm output wiring to 48V DC, 0.5 A.
ATTENTION:
Wire connections to the power and relay connector, must be UL- and CSA-rated, style 1007 or 1569 twisted-pair copper appliance wiring
material (AWM) wire.
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