Router Installation Guide

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Cisco XR 12416 Router Installation Guide
OL-13833-01
Chapter 1 Product Overview
Physical and Functional Description of Router
In the DC-input power configuration:
• Modules A1 and B1 provide redundant power for system load zone 1 (the
upper blower module and the upper card cage).
• Modules A2 and B2 provide redundant power for system load zone 2 (the
switch fabric card cage, the lower card cage, and the lower blower module).
Figure 1-7 DC-Input Power Shelf
Caution A router configured for source DC operation must be operated with 4 DC-input
PEMs installed at all times for electromagnetic compatibility (EMC).
Note DC PEMs support online insertion and removal (OIR) which means that you can
remove and replace one PEM in each load zone (A1 or B1; A2 or B2) while the
system remains powered on.
DC power to the router is provided from cables from a DC power source that are
connected to threaded terminal studs on the back of the DC-input power shelf as
shown in Figure 1-8.
26201
PWR OK
FAULT
TEMP
PWR OK
FAULT
TEMP
PWR OK
FAULT
TEMP
PWR OK
FAULT
TEMP