Juniper MX480, Руководство по оборудованию

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configuration with full power for as long as the router is operational. In the two-PEM
high-line configuration, slots
PEM0
and
PEM1
or
PEM2
and
PEM3
are used. The high-line
configuration requires two power supplies, with the third and fourth providing
redundancy. With high-capacity power supplies, you must have a minimum of two
power supplies installed in the router.
MX480 AC Power Supply LEDs
Each AC power supply faceplate contains three LEDs that indicate the status of the
power supply (see
Table 13 on page 47 ). 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.
Table 13: AC Power Supply LEDs
Description State Color Label
AC power input voltage is below 78 VAC. Off Yellow
AC OK
AC power input voltage is within 78–264 VAC. On Green
DC power outputs generated by the power supply are not within the normal
operating ranges. Off Green DC OK
DC power outputs generated by the power supply are within the normal operating
ranges. On
Power supply is functioning normally. Off Red
PS FAIL
Power supply is not functioning normally and its output voltage is out of regulation
limits. Check
AC OK
and
DC OK
LEDs for more information.
On
AC Electrical Specifications for the MX480 Router
Table 14 on page 47 lists the AC power supply electrical specifications; Table 15 on page 48
lists the AC power system specifications.
Table 14: AC Power Supply Electrical Specifications
Specification Item
Normal-Capacity Power Supplies
1027 W (low line)
1590 W (high line)
Maximum output power
Operating range: 100 – 240 VAC (nominal) AC input voltage
50 to 60 Hz (nominal) AC input line frequency
11.0 A @ 200 VAC or 14.5 A @ 110 VAC maximum AC input current rating
47 Copyright © 2019, Juniper Networks, Inc.
Chapter 1: Overview