Cisco CRS-1 System Description page 39

Cisco CRS 8-Slot Line Card Chassis Enhanced Router Power Systems
#con_1241429/fig_1294667
shelves and the Cisco CRS 8-slot Line Card Chassis Enhanced router. See the
docs/routers/crs/crs1/8_slot/installation/guide/hqlcc_install.pdf
Line Card Chassis Enhanced Router Installation Guide for detailed information about the input power
connections to the AC power shelf.
Each AC power shelf supports up to three AC power modules. The AC power modules convert AC power
into DC power, provide filtering, and then distribute the DC power to the chassis midplane. The power shelf
also has a service processor module that monitors the condition of each AC power module and provides status
signals that indicate the health of the power supplies.
Modular Configuration AC Power Module Indicators
The following three LED status indicators are located on the front of each AC power module:
• Input OK - Green
• Output OK - Green
• Internal Fault - Red
The following table lists the power module status indicators and their functions.
Table 6: AC Power Module Status Indicators
Name
Input OK
Output OK
Internal Fault
The Internal Fault LED on the AC power module is turned on continuously to indicate that one or more of
the following internal faults is detected inside the power module:
• 5V out of range
• Output Stage OT
• Fan Fault
• OR-ing fault (Output voltage less than bus voltage)
• OC shutdown
• OT shutdown
• OV shutdown
• Input stage OT
is a diagram of the connections between the modular configuration AC power
Color Function
Green Input OK LED turns on continuously when input voltage is present and within the
regulation range.
Input OK LED flashes when input voltage is present but not within the regulation
range.
Input OK LED is off when input voltage is not present.
Input OK LED flashes when hot-unplugging the power module from the power shelf
to indicate that there is energy in the power module until the input bulk capacitor is
completely discharged or the housekeeping circuit is shut down.
Green Output OK LED turns on continuously when power module output voltage is on.
Output OK LED flashes when power module output voltage is in a power limit or an
overcurrent situation.
Red Internal Fault LED turns on continuously when there is an internal fault in the power
module.
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
Modular Configuration AC Power Module Indicators
http://www.cisco.com/en/US/
Cisco CRS Carrier Routing System 8-Slot
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