Juniper SRX-4600, Hardware Manual

Page: 36 / 210

Table 12: AC Power Supply LED (continued)
Description LED State
Blinking—Power supply has failed. Amber
DC Power Supply
The DC power supply is a FRU and you can install it without powering off the services gateway or disrupting
the services gateway function.
Each DC power supply weighs approximately 4.4 lb (1.99 kg) and consists of a handle, an ejection lever,
a status LED, and a terminal block that provides a single DC input (–48 VDC and return) that requires a
dedicated customer-site circuit breaker. We recommend that you use a dedicated customer-site circuit
breaker rated for 13 A (–48 VDC) minimum, or as required by local code. The DC power supply gives an
output of 1100 W. Figure 17 on page 38 shows the DC power supply.
Figure 17: SRX4600 Services Gateway DC Power Supply
g0
0
9521
Each DC power supply provides power to all components in the services gateway. The two power supplies
provide full power redundancy to the services gateway. If one power supply fails or is removed, the second
power supply balances the electrical load without interruption. The services gateway reassesses the power
required to support the services gateway configuration and issues error messages if the available power
is insufficient.
For instructions on installing the power supply, see “Installing the SRX4600 Services Gateway DC Power
Supply” on page 97 .
Figure 18 on page 39 shows the location of one bicolor LED on the faceplate of an DC power supply. This
LED displays information about the status of the power supply.
38