Cisco ASR 1002-X Overview And Installation page 10

+24 VDC Power System Input for the Cisco ASR 1002-X Router
LED Label LED
INPUT OK A bicolor LED
indicates the presence
of input voltage
FAN OK A bicolor LED
indicates the power
supply fan status
+24 VDC Power System Input for the Cisco ASR 1002-X Router
The +24 VDC power supply operates within specification between +21 VDC and +36 VDC continuously
after the power supply DC input is turned on. The power supply measures the input voltage at the power
supply terminals and turns off the supply when the input voltage reaches 19.0 V +/- 0.5 V when this low
voltage threshold is reached, the power supply does not resume operation until the input voltage reaches 20.0
V +/- 0.5 V. When the turn-on threshold of 20 V is reached, then the +24 VDC power supply meets all
specification requirements down to the low voltage threshold of 19 V (+/- tolerance).
+24 VDC Power System Output for the Cisco ASR 1002-X Router
The +24 VDC power supply output tolerance is defined in the following table, 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.
Table 6: Cisco ASR 1002-X Router +24 VDC Power System Output Voltage and Current
Output Voltage
Minimum
Nominal
Maximum
Output
Current
Minimum
Cisco ASR 1002-X Router Overview and Installation
10
Color Description
Green The LED turns green to signal that voltage is > or = to 20 VDC at turn-on and the
voltage reduces to 19.0VDC (+/- 0.5 V tolerance).
Amber The LED turns to amber when the input voltage is active and is reduced to 16.0
VDC and indicates that a voltage on the terminal block is still present. The LED
remains amber and is active until around 10 V. The LED should be OFF below
15.8 VDC.
Green The LED turns to green when all fans are operational.
Red The LED turns to red when a fan failure is detected.
+12 VDC +3.3 V
11.80 3.20 V
VDC
12.00 3.30 V
VDC
12.20 3.40 V
VDC
2.0 A 0.10 A
Cisco ASR 1002-X Router Overview and Installation