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Power
Supply
The router has two load-sharing, pass-through power
supplies, located at the bottom rear of the chassis, as shown in Figure 2.
For information about power supply redundancy and replaceability, see Power System.
Each power supply has the following components (see Figure 17 and Figure 18):
Figure 17: Original Power Supply
Figure 18: Enhanced Power
Supply
Table 12: States for Power
Supply LEDs
|
Label
|
Color
|
State
|
Description
|
|
CB ON
|
Green
|
On steadily
|
Power supply is inserted correctly and is receiving power. Circuit breaker
is on.
|
|
OUTPUT OK
|
Blue
|
On steadily
|
Power supply is inserted and is functioning normally.
|
|
Blinking
|
Power supply is not functioning, is starting up, or is not properly
inserted, or airflow is not sufficient.
|
|
NO AIRFLOW (original power supply only)
|
Amber
|
On steadily
|
Power supply is inserted, but airflow around the power supply is not
sufficient.
|
|
CB OFF
|
Amber
|
On steadily
|
Power supply is functioning, but the circuit breaker is off.
|
Table 13 lists electrical specifications
for the power supply.
Table 13: Electrical Specifications
for Power Supply
|
Description
|
Specification
|
|
Maximum power output
|
Original power supply: 2400 W; nonisolated
Enhanced power supply: 3000 W; nonisolated
|
|
DC input voltage
|
Nominal: –48 VDC, –60 VDC
Operating range: –42 to –72 VDC
|
|
DC input current rating
|
80 A @ –48 V
|
|
Output voltages
|
+48 V @ 8.3 A (cooling system), +8.3 V @ 6 A (bias),
–48 V to –60 V@ 75 A
|
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