Cisco Systems Cisco XR 12416 manual DC-Input Power Shelf

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Chapter 1 Product Overview

Physical and Functional Description of Router

In the DC-input power configuration:

•Modules A1 and B1 provide redundant power for system load zone 1 (the upper blower module and the upper card cage).

•Modules A2 and B2 provide redundant power for system load zone 2 (the switch fabric card cage, the lower card cage, and the lower blower module).

Figure 1-7 DC-Input Power Shelf

PWR OK
	PWR OK
FAULT	PWR OK
FAULT	PWR OK
	FAULT
TEMP	FAULT
TEMP	FAULT
	TEMP
	TEMP
	TEMP

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Caution A router configured for source DC operation must be operated with 4 DC-input PEMs installed at all times for electromagnetic compatibility (EMC).

Note DC PEMs support online insertion and removal (OIR) which means that you can remove and replace one PEM in each load zone (A1 or B1; A2 or B2) while the system remains powered on.

DC power to the router is provided from cables from a DC power source that are connected to threaded terminal studs on the back of the DC-input power shelf as shown in Figure 1-8.

		Cisco XR 12416 Router Installation Guide
		Cisco XR 12416 Router Installation Guide
	OL-13833-01			1-11
	OL-13833-01			1-11

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Contents Physical and Functional Description of Router Product OverviewCisco XR 12416 Router Installation Guide Alarm card Lower card cage Power shelf and power supplies Upper blower moduleAlarm card Upper card cage Air filter door Switch fabric 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 ComponentsPcmcia slot-1 Slot-2 Behind cover U18 Bank Flash Dram DIMMsU15 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