Cisco Systems UBR7225VXR specifications Fan Trays, Cisco uBR7225VXR AC-Input Power Supply

Chapter 1 Cisco uBR7225VXR Overview

Hardware Component Descriptions

Figure 1-8 Cisco uBR7225VXR AC-Input Power Supply

1

4

PWR-UBR7225VXR-AC

100-240 VAC
4-2 A
50-60 Hz
Input	Output
OK	OK

270698

	3		2
1	Power switch	3	AC-input receptable
2	Handle	4	Captive installation screw

Caution To ensure adequate airflow across the Cisco uBR7225VXR power supplies, a power supply or a power supply filler plate (with its attached air dam) must be installed in each power supply bay.

Note See Appendix A, “Cisco uBR7225VXR Router Specifications,” for AC-input power supply system power specifications, including input voltage and operating frequency ranges.

The Cisco uBR7225VXR power supply shuts itself down when the input AC voltage, the output DC voltage, or the internal temperature of the chassis exceeds allowable tolerances. When this occurs, one or both of the power supply front panel LEDs will turn red. The Cisco uBR7225VXR power supply must then be reset by manually switching the power switch off and then back on to allow the router to recover.

Caution When the input power to Cisco uBR7225VXR power supply is disconnected or lost, the power supply enters a reset cycle for 10 seconds. Wait at least 10 seconds or move the power switch from one position to the other to restart the power supply. For example, if the power supply was on when the power was disconnected or lost, move the power switch to the off position and then back to the on position. If you do not wait the full 10 seconds or move the power switch from one position to the other, the power supply does not restart.

Fan Trays

The fan tray for the Cisco uBR7225VXR router, shown in Figure 1-9, consisting of three fans that are attached to a metal tray, is located on the left side of the chassis (when viewing the router from the front) and receives 12 VDC through a DC power harness that connects directly to the router midplane.

	Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
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