Cisco 7200 VXR User Manual page 47

Chapter 1 Cisco 7200 VXR Product Overview
The DC-input power supply has DC-input power leads that are hardwired to a DC-input terminal block.
A cable tie is shipped with each DC-input power supply to secure the leads to the power supply faceplate
and provide strain relief for the leads.
To ensure adequate airflow across the router power supplies, a power supply or a power supply filler plate
Caution
must be installed in each power supply bay.
supply filler plate.
Table
specifications, including input voltage and operating current ratings.
Each AC-input power supply operating at 120 VAC requires a minimum of 5A service. We recommend
Note
powering the Cisco 7206VXR from a 15A receptacle at the power source.
Each DC-input power supply operating at –24 VDC in North America requires a minimum of 19A
Note
service. Each DC-input power supply operating at –48 VDC in North America requires a minimum of
13A service. Each DC-input power supply operating at –60 VDC in the European Community requires
a minimum of 8A service.
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a
listed and certified fuse or circuit breaker, 20A minimum 60 VDC, is used on all current-carrying
conductors. Site wiring and circuit breakers need to be sized to accommodate the maximum values for
safety reasons.
The power OK LED goes off and the power supply shuts itself down when the internal DC voltages
exceed allowable tolerances or the internal temperature of the power supply exceeds allowable
tolerances. The power supply remains in a shutdown state until it is disconnected and reconnected to the
source power, and then restarted with the power switch. The power switch turns the power supply on and
starts the system. For a description of power supply shutdown conditions and thresholds, see the
"Environmental Monitoring and Reporting Functions" section on page
Chassis
The Cisco 7200 VXR chassis, shown in
(depending on your chassis model), one slot for the I/O controller, and one bay for the subchassis. The
subchassis assembly contains the midplane, the fan tray, two power supply bays, and one slot for the
network processing engine. The replacement chassis includes the subchassis assembly and one power
supply.
To replace the chassis, you must remove and replace all the port adapters, the I/O controller, and the
Note
network processing engine or network services engine; therefore, when replacing the chassis, refer to
the configuration notes that explain how to remove and replace these units. These configuration notes
accompany every chassis that is shipped from the factory as a FRU. The configuration notes are also
available on the Documentation CD-ROM and on Cisco.com.
78-5469-04 B0
1-1, earlier in this chapter, lists the AC-input and DC-input power supply system power
Figure 1-4 shows a Cisco 7206VXR with an installed power
Figure 1-28, has four or six slots for the port adapters
Cisco 7200 VXR Installation and Configuration Guide
Field-Replaceable Units
1-54.
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