Cisco XR 12410 - Manual (Page 126)

Chapter 3 Installing the Cisco XR 12410 Router
Connecting Power to the Router
3-44
Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
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 2-32 lists 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).