Juniper Networks MX480 - Manual (Page 68)

MX480 AC Power Supply LEDs
Each AC power supply faceplate contains three LEDs that indicate the status of the
power supply (see
Table 17 on page 44 ). 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 17: 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
Related
Documentation
MX480 Chassis Description on page 7 •
• MX480 Power System Description on page 41
• MX480 AC Power Supply Description on page 42
MX480 DC Power Supply Description
Each DC power supply weighs approximately 3.8 lb (1.7 kg) and consists of one DC input
(–48 VDC and return), one 40 A (–48 VDC) circuit breaker, a fan, and LEDs to monitor
the status of the power supply.
Figure 23 on page 45 shows the power supply. Each DC
power supply has a single DC input (–48 VDC and return) that requires a dedicated circuit
breaker.
For high capacity power supplies, we recommend that you provision 60 A or 75A per
feed, depending on the selected DIP switch setting.
Copyright © 2013, Juniper Networks, Inc. 44
MX480 3D Universal Edge Router Hardware Guide