Cisco WS-X4515 - Supervisor Engine IV Manual de usuario descargar pdf (Pagina 24)

Chapter 1 Product Overview

Power Supplies

1-24

Catalyst 4500 Series Installation Guide

78-14409-03 B0

Environmental Monitoring Feature

With the environmental monitoring and reporting feature, you can keep your

system running by resolving adverse environmental conditions before loss of

operation.

The power supply monitors its own internal temperature and voltages. In the event

of excessive internal temperature, the power supply shuts down to prevent

damage. When the power supply returns to a safe operating temperature, it

restarts. If the power supply output voltage is not within the specified range, the

LED labeled OUTPUT FAIL will light. An instance of substantial input

overvoltage can shut down the power supply.

An instance of substantial input overvoltage (greater than -75 VDC continuous)

can damage the power supply input circuitry and can cause it to shut down

permanently.

The main power switch has an input range of -40.5 to -72 VDC, while the -48 V

voice power switch operates over a range of -40.5 to -56 VDC. The voice power

will either fail to start or will shut down if exposed to greater than -56 VDC input.

Voice power will recover after you recycle input power within the proper voltage

range.

If the voice power shuts down due to input overvoltage (greater than -56 VDC),

the main convertor section will not shut down.

The supervisor engine monitors the status of each power supply and provides a

status report through the switch software. For more details on how the supervisor

engine monitors the power supplies, refer to the Catalyst 4000 Family Module

Installation Guide.

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Cisco WS-X4515 - Supervisor Engine IV Manual de usuario Pagina 24