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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
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Chapter 10 Cisco ASR 1002-X Router Overview and Installation
Cisco ASR 1002-X Router Description
+24 VDC Power System Output for the Cisco ASR 1002-X Router
The +24 VDC power supply output tolerance is defined in
Table 10-6
under all combinations of +24
VDC input line variation. The total system power consumption should not exceed 470 W or output rating
of each power supply.
Note
Two power supplies are used for the redundant operation. The system’s total power consumption should
not exceed the rating of one power supply to maintain redundancy.
Note
Any combination of output voltage and current cannot exceed the total power rating of 470 W.
The following are the important notes regarding the +24 VDC power supply in the Cisco ASR 1002-X
Router:
•
Output Voltage Alarm Threshold—The Output Voltage Alarm is raised when the output voltage is
below the low end of the minimum limit or above the high end of the maximum limit (as shown in
Table 10-7
). When the output voltage is above the high end of the minimum limit or below the low
end of the maximum limit, the LED does not turn to red.
•
Temperature—If a fan fails, the power supply meets the functional requirements specified in
Table 10-7
. The calculated MTBF does not apply above 55°C with less than two fans. However, all
the component stress remains within the manufacturer’s specified rating.
•
Thermal shutdown—The +24 VDC power supply shuts down to protect its components due to
excessive internal temperature. The +24 VDC power supply then automatically restarts after the
internal temperature returns to a safe operating level.
Power Cords Supported by the Cisco ASR 1002-X Router
Table 10-8
lists the power cords that are supported by the Cisco ASR 1002-X Router.
Table 10-6
Cisco ASR 1002-X 24 VDC Power System Output Voltage and Current
Output Voltage
+12 VDC
+3.3 V
Minimum
11.80 VDC
3.20 V
Nominal
12.00 VDC
3.30 V
Maximum
12.20 VDC
3.40 V
Output Current
Minimum
2.0 A
0.10 A
Maximum
39 A
3.125 A
Table 10-7
+24 VDC Output Voltage Alarm Threshold Ranges
Output
Minimum
Maximum
12 V
10.0-11.2 V
12.8-13.8 V
3.3 V
2.6 – 3.0 V
None
