Dc Power Supply Configurations; Mx480 Dc Power Supply Leds; Figure 15: High-Capacity Dc Power Supply; Table 18: Power Supply Redundancy And Power Distribution - Juniper MX480 Hardware Manual

MX480 Universal Routing Platform Hardware Guide

Table 18: Power Supply Redundancy and Power Distribution

DC Power Supply Slot
PEM0
PEM1
PEM2
PEM3

MX480 DC Power Supply LEDs

54

Figure 15: High-Capacity DC Power Supply

DC Power Supply Configurations

In the DC power configuration, the MX480 router contains either two or four DC power
supplies (see Figure 14 on page
through PEM3 (left to right). You can upgrade your DC power system from two to four
power supplies.
Four power supplies provide full redundancy. If a DC power supply in a redundant
configuration is removed or fails, its redundant power supply takes over without
interruption. The DC power supply in
in slot PEM0 , and the DC power supply in
supply in slot . If only two DC power supplies are installed, they must be installed
PEM1
in slots and or in slots
PEM0 PEM1
Table 18 on page 54 shows the components that are powered by each DC power supply
slot. It applies to existing and high-capacity power supplies.
Power Supply Provides Power to the Following Components
Fan tray, DPC slots and
0
Fan tray and DPC slots through
2
Fan tray, DPC slots and
0
Fan tray and DPC slots through
2
Each DC power supply faceplate contains three LEDs that indicate the status of the
power supply (see Table 19 on page
LEDs on the craft interface.In addition, a power supply failure triggers the red alarm LED
on the craft interface.
53) located at the rear of the chassis in slots
serves as redundant to the DC power supply
PEM2
PEM3 serves as redundant to the DC power
and .
PEM2 PEM3
, and SCB slots and
1 0 1
5
, and SCB slots and
1 0 1
5
55). The power supply status is also reflected in two
PEM0
Copyright © 2019, Juniper Networks, Inc.