Cisco Systems XR 12406 manual Power Subsystems, Alarm Relay Contact Connector

Chapter 1 Cisco XR 12406 Router Overview

Line Cards

Alarm Relay Contact Connector

The 9-pin D-type alarm relay contact connector on the faceplate of the alarm card (see Figure 1-5) is used to connect external alarm indication equipment to the router so that alarm indicator signals in the router can be repeated elsewhere outside the router.

The pins on this connector are tied directly to the critical, major, and minor alarm relay contacts (normally open, normally closed, and common). Any event that causes one of the alarm LEDs on the alarm card faceplate to go on also activates the corresponding relay contact closure. The relay interface is rated at a maximum of 2A, 60V, or 50VA, whichever is greater.

Because alarm contact cables are entirely dependent on site-specific circumstances, alarm connector cables are not available from Cisco. For information about alarm connector wiring requirements and the pinout for the alarm connector interface, see the “Alarm Card Alarm Relay Connector Specifications” section on page A-5.

Power Subsystems

The Cisco XR 12406 Router can be powered by either an AC or DC power subsystem, as described in the following sections:

•AC Power Subsystem, page 1-16

•DC Power Subsystem, page 1-20

•Power Distribution, page 1-24

Note The Cisco XR 12406 Router can be either AC powered or DC powered; the router cannot accept two different types of power modules at the same time.

Note The enhanced XR 12406 chassis (XR-12000/6 configured with 12406/120 fabric option) ships with redundant power supply which is required to maintain High Availability for the system.

	Cisco XR 12406 Router Installation Guide
OL-13831-01		1-15