Cisco IE-3000-4TC Installation Guide - Page 113
B-16, Completed DC Power Connections on the Power and Relay Connector
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Appendix B Installation In a Hazardous Environment Verifying Switch Operation Figure B-16 shows the completed DC-input wiring on a power and relay connector for a primary power source and an optional secondary power source. Figure B-16 Completed DC Power Connections on the Power and Relay Connector 1 2 3 4 V RT A A 5 6 7 8 V RT A A 201818 1 Power source A positive connection 2 Power source A return connection 3 External device 1, relay wire connection 4 External device 1, relay wire connection 5 Power source B positive connection 6 Power source B return connection 7 External device 2, relay wire connection 8 External device 2, relay wire connection If your power source is -48 VDC, this table descibes the your wiring connections for Figure B-16. 1 Power source A return connection 2 Power source A -48 VDC connection 3 External device 1, relay wire connection 4 External device 1, relay wire connection 5 Power source B return connection 6 Power source B -48 VDC connection 7 External device 2, relay wire connection 8 External device 2, relay wire connection Step 8 (Optional) If you plan to connect external alarm devices to the alarm relays and the switch is already installed, go to the "Wiring the External Alarms" section on page B-38. Otherwise, go to the "Verifying Switch Operation" section on page B-14. OL-13017-01 Cisco IE 3000 Switch Hardware Installation Guide B-23