Figure 15: High-Capacity DC Power Supply
g004725
DC Power Supply Configurations
In the DC power configuration, the MX480 router contains either two or four DC power
supplies (see
) located at the rear of the chassis in slots
PEM0
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
PEM2
serves as redundant to the DC power supply
in slot
PEM0
, and the DC power supply in
PEM3
serves as redundant to the DC power
supply in slot
PEM1
. If only two DC power supplies are installed, they must be installed
in slots
PEM0
and
PEM1
or in slots
PEM2
and
PEM3
.
shows the components that are powered by each DC power supply
slot. It applies to existing and high-capacity power supplies.
Table 18: Power Supply Redundancy and Power Distribution
Power Supply Provides Power to the Following Components
DC Power Supply Slot
Fan tray, DPC slots
0
and
1
, and SCB slots
0
and
1
PEM0
Fan tray and DPC slots
2
through
5
PEM1
Fan tray, DPC slots
0
and
1
, and SCB slots
0
and
1
PEM2
Fan tray and DPC slots
2
through
5
PEM3
MX480 DC Power Supply LEDs
Each DC power supply faceplate contains three LEDs that indicate the status of the
power supply (see
). The power supply status is also reflected in two
LEDs on the craft interface.In addition, a power supply failure triggers the red alarm LED
on the craft interface.
Copyright © 2019, Juniper Networks, Inc.
54
MX480 Universal Routing Platform Hardware Guide
Содержание MX480
Страница 14: ...Copyright 2019 Juniper Networks Inc xiv MX480 Universal Routing Platform Hardware Guide...
Страница 22: ...Copyright 2019 Juniper Networks Inc xxii MX480 Universal Routing Platform Hardware Guide...
Страница 138: ...Copyright 2019 Juniper Networks Inc 138 MX480 Universal Routing Platform Hardware Guide...
Страница 168: ...Copyright 2019 Juniper Networks Inc 168 MX480 Universal Routing Platform Hardware Guide...
Страница 352: ...Copyright 2019 Juniper Networks Inc 352 MX480 Universal Routing Platform Hardware Guide...
Страница 382: ...Copyright 2019 Juniper Networks Inc 382 MX480 Universal Routing Platform Hardware Guide...
Страница 420: ...Copyright 2019 Juniper Networks Inc 420 MX480 Universal Routing Platform Hardware Guide...