Cisco Systems 12006 series, 12406 series manual Blower Module, Power Distribution

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Chapter 1 Product Overview

Blower Module

Power Distribution

The router chassis backplane distributes -48 VDC power throughout the router and to all cards in the card cages.

All cards have multiple DC-DC converters that convert the -48 VDC into

+2.5 VDC, +3.3 VDC, +5 VDC, and other voltages as required by the line card. The DC-DC converters are turned on by the MBus modules under the control of the RP and MBus software.

Power for the blower module is supplied directly from the backplane through a connector in the PDU that passes DC voltage from the backplane to the blower module. An blower module controller card in the blower module converts –48 VDC into DC voltage that powers the blower module fans.

Caution To ensure that the chassis configuration complies with the required power budgets, use the on-line power calculator. Failure to properly verify the configuration may result in an unpredictable state if one of the power units fails. Contact your local sales representative for assistance.

Blower Module

Cisco 12006 and Cisco 12406 routers are equipped with a blower module to distribute air within the chassis. The blower module is located on the rear of the chassis. (See Figure 1-2.) The blower module draws room air into the chassis through two air filters on the side of the chassis, pulls the air through the chassis card cages, and expels it through exhaust vents on the back of the blower module. (See Figure 1-17.)

Caution Exhaust from other equipment vented directly into the router air inlet may cause overheating.

The front, back, and sides of the router must remain unobstructed to ensure adequate air flow and prevent overheating inside the chassis. Allow sufficient air flow by maintaining 6 inches (15.24 cm) of clearance at both the inlet and exhaust openings on the chassis.

 

 

Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide

 

 

 

 

 

 

OL-11497-03

 

 

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Contents Introduction Product OverviewProduct Description Cisco 12006 and Cisco 12406 router Front View Product Overview Product Description Product Overview Product Description Cisco 12006 and Cisco 12406 router Rear View RP and Line Card Slots Physical and Functional DescriptionChassis Chassis Backplane Switch Fabric Card SlotsAlarm Card Slots Cooling PowerSwitch Fabric Card Types Multigigabit Crossbar Switch FabricNonredundant and Redundant System Configurations Switch Fabric Redundancy Switch Fabric Switching Capacity and Router TypeDevice Discovery Maintenance BusPower-Up/Down Control Code Download DiagnosticsEnvironmental Monitoring and Alarms Route Processor Functions Route ProcessorsGigabit Route Processor Route Processor TypesProduct Overview Route Processors GRP Layout Type Size Quantity Description Location GRP Memory ComponentsSram System Status LEDs Reset AUX Coll RX Link MIIGRP Alphanumeric LED Displays Partial Faceplate Soft Reset SwitchAsynchronous Serial Ports Pcmcia SlotsEthernet Port Performance Route Processor Front View Performance Route ProcessorProduct Overview Route Processors PRP Horizontal Orientation Sdram PRP Memory ComponentsSdram Flash Disk Size Product Number Soft Reset Switch Ethernet Ports Flash Disk SlotsLine Cards 10 Sample Line Cards Alarm Alarm CardsAlarm Card Status Alarm Output FunctionClock and Scheduler Card and Switch Fabric Card Status Alarm Relay Contact Connector Power SubsystemsPower Source Monitoring AC PDU AC Power Subsystem12 AC Power Distribution Unit 13 AC-Input Power Supply AC-Input Power SupplyProduct Overview Power Subsystems LED Label Function State Description DC Power Subsystem14 DC Power Distribution Unit DC-Input Power Entry Module Power a16 DC-Input Power Entry Module LED Label Color Function Blower Module Power DistributionTop view 18 Air Filter Locations Air FiltersCable-Management System 19 Chassis Cable-Management System Field-Replaceable Units Technical Specifications
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