T640 Three-Input 240-A Dc Power Supply Leds; Figure 36: Three-Input 240-A Dc Power Supply Leds; Table 29: Fault Tolerance; Table 30: Three-Input 240-A Dc Power Supply Leds - Juniper T640 Hardware Manual

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T640 Three-Input 240-A DC Power Supply LEDs

Copyright © 2013, Juniper Networks, Inc.

Table 29: Fault Tolerance

Redundancy
Nonredundant power supply
Redundant power supplies
T640 Power System Description on page 60
Powering On a DC-Powered T640 Router on page 162
Maintaining the T640 Power Supplies on page 194
LEDs on each power supply faceplate (see
the power supply. In addition, a power supply failure triggers the red alarm LED on the
craft interface. Table 30 on page 65

Figure 36: Three-Input 240-A DC Power Supply LEDs

Table 30 on page 65 describes the three-input 240-A DC power supply LEDs.

Table 30: Three-Input 240-A DC Power Supply LEDs

LED Color
CB ON —One per Green
input
Chapter 3: T640 Router Hardware Component Overview
Fault Tolerance When One Input Fails or is Disconnected
If this input fails, the router shuts down.
NOTE: We recommend that you install redundant power
supplies.
If an input on one power supply fails, the other power supply
assumes the electrical load for all inputs. If one input on the other
power supply is not functional, the router shuts down.
Figure 36 on page
describes the functions of the power supply LEDs.
State Description
On steadily Circuit breaker is on.
Off Circuit breaker is not turned on, or
host subsystem has detected a
failure and has turned the circuit
breaker off.
65) indicate the status of
65