Ac Power Supply Configurations; Ac Power Supply Leds In An Ex9214 Switch; Led - Juniper EX9214 Hardware Manual

AC Power Supply Configurations

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AC Power Supply LEDs in an EX9214 Switch

Copyright © 2015, Juniper Networks, Inc.
Each power supply has two power inlets: one located at the top of the power supply and
another that requires a dedicated power feed, located directly above the power supply.
We recommend that you use a customer site circuit breaker rated for 15.0 A @ 250 VAC
circuit breaker minimum for each AC power supply, or one that complies with the local
code. Doing so enables you to operate the switch in any configuration without upgrading
the power infrastructure.
You can provide one or two feeds to the power supply. If you are using the power supply
in one-feed mode, you must connect the power cord into the AC appliance inlet located
on the chassis above the power supply. This is the recommended inlet when using the
power supply in one-feed mode. If you are using the power supply in two-feed mode,
you must connect another power cord to the AC appliance inlet on the power supply
faceplate also.
EX9214 switches support two or four AC power supplies, installed vertically at the rear
of the chassis in slots
PEM0
in slots and provide power to the lower fan tray, line card slots
PEM0 PEM2
and SF slots 1 and 2 ; power supplies in slots
fan tray, line card slots through
0
supply in each zone.
Four power supplies provide full redundancy. If a power supply in a redundant
configuration is removed or fails, its redundant power supply takes over without
interruption. The power supply in
supply in slot and the power supply in
PEM0
the power supply in slot
PEM1
installed in slots PEM0 and
AC Power Supply Specifications for EX9214 Switches on page 78
AC Power Supply LEDs in an EX9214 Switch on page 41
Power Requirements for EX9200 Switch Components on page 77
Installing an AC Power Supply in an EX9214 Switch on page 181
Removing an AC Power Supply from an EX9214 Switch on page 183
An AC power supply has four LEDs on its faceplate:
LEDs. These LEDs display information about the status of the AC power supply.
FAIL
There are two LEDs on the craft interface that also display the power supply status. In
addition, a power supply failure triggers the major alarm LED on the craft interface.
Table 19 on page 42 describes the LEDs on an AC power supply in an EX9214 switch.
through (left to right), in two zones: power supplies
PEM3
PEM1 and
, and SF slot . There must be at least one power
5 0
PEM2 serves as redundant power supply to the power
serves as redundant power supply to
PEM3
. If only two power supplies are installed, they must be
PEM1 or in slots PEM2 and
AC-1 OK
Chapter 4: Power Supplies
through
6
PEM3 provide power to the upper
PEM3 .
, , , and
AC-2 OK DC OK
,
11
PS
41