Cisco Systems Cisco XR 12416 manual Product Overview Blower Module

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Chapter 1 Product Overview

Blower Module

Caution You should inspect and clean the air filter one time per month (more often in dusty environments). Do not operate the router without an air filter installed.

The blower module controller card monitors and controls operation of three variable-speed fans in the blower modules. The variable-speed feature allows quieter operation by running the fans at below maximum speed, while still providing adequate cooling to maintain an acceptable operating temperature inside the card cages.

Two temperature sensors on each line card monitor the internal air temperature in the card cages:

•When the ambient air temperature is within the normal operating range, the fans operate at their lowest speed, which is 55 percent of the maximum speed.

•If the air temperature rises inside the card cages the fan speed increases to provide additional cool air to the cards.

•If the air temperature continues to rise beyond the specified threshold, the system environmental monitor shuts down all internal power to prevent equipment damage due to excessive heat.

•If the system detects that one of the three fans within a blower module has failed, it displays a warning message on the console window. In addition, the two remaining fans go to full speed to compensate for the loss of the one fan. If another fan fails, the system shuts down to prevent equipment damage.

For additional troubleshooting information, see the “Blower Module Operation” section on page 4-31.

 

 

Cisco XR 12416 Router Installation Guide

 

 

 

 

 

 

OL-13833-01

 

 

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Contents Physical and Functional Description of Router Product OverviewCisco XR 12416 Router Installation Guide Alarm card Upper card cage Power shelf and power supplies Upper blower moduleAir filter door Switch fabric Card cage Alarm card Lower card cageStandard AC Power Shelf AC and DC Power SubsystemsPower cord Retention clip Standard AC-Input Power SubsystemOptional AC Power Shelf Optional AC-Input Power Subsystem Power cords Optional Power Shelf AC-Input ConnectionsAC Power Supplies Fault TempDC Power Shelf DC-Input Power Shelf A1- A1+ A2- A2+ B2+ B2- B1+ B1 Ground 9identifies the components of a 2400 W DC power supply DC Power SuppliesUpper Card Cage Chassis Card CagesLower Card Cage Switch Fabric Card CageSwitch Fabric Card Functionality Switch Fabric OverviewClock Scheduler Cards Switch Fabric CardsAlarm Cards Alarm Card and Line Card OverviewCutoff switch Pin Audio alarmLine Cards Route ProcessorCisco XR 12416 Router Installation Guide PRP Pcmcia Card Slots and Status LEDs Performance Route Processor Overview12 Port Activity LEDs-Partial Front Panel PRP Ethernet Ports and Status LEDsPRP Auxiliary and Console Ports PRP Reset SwitchProcessor PRP Alphanumeric Message DisplaysType Size Quantity Description Location PRP Memory ComponentsU18 Bank Flash Dram DIMMs U15Pcmcia slot-1 Slot-2 Behind cover PRP Sdram PRP Flash Memory PRP NvramUpper and Lower Cable Management Brackets Blower ModuleBlower Module Air filter Room air Top blower module Air exhaust PlenumProduct Overview Blower Module OL-13833-01
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