Chapter 3 Installing the Cisco XR 12410 Router
Connecting Power to the Router
The alarm subconnectors can be used to connect the router to an external site alarm maintenance system. Any critical, major, and minor alarms generated by the router also energize alarm relays on the alarm card and activate the external site alarm. The alarm relay contacts on the alarm card consist of standard common, normally open, and normally closed relay contacts that are wired to Alarm A and Alarm B connector pins.
Table 2-7 on page 2-32lists the pin-to-signal correspondence between the connector pins and the alarm card relay contacts. Because alarm contact cables are entirely dependent on installation site circumstances, alarm connector cables are not available from Cisco. For information about alarm connector wiring requirements and the pinouts for the alarm connector interface, see the “Alarm Display Connection Guidelines” section on page 2-31.
Caution Only safety extra-low voltage (SELV) circuits can be connected to the alarm connector. Maximum rating for the alarm circuit is 2 A, 50 VA.
Note To comply with the intra-building lightning surge requirements of GR-1089-CORE, Issue II, Revision 01, February 1999, you must use a shielded cable when connecting to the external alarm ports on the alarm card. The shielded cable is terminated by shielded connectors on both ends, with the cable shield material tied to both connectors.
Connecting Power to the Router
Use the one of the following procedures to connect power to your router.
•Connecting Power to an AC-Powered Router, page 3-45
•Connecting Power to a DC-Powered Router, page 3-46
Caution A router must be operated with both of its power modules installed at all times for electromagnetic compatibility (EMC).
| Cisco XR 12410 Router Installation Guide |
3-44 | OL-13832-01 |
