Tolerance; Figure 20: Tx Matrix Plus Seven-Input 420-A Power Supply With Input Power; Figure 21: Tx Matrix Plus Input Power Tray; Table 17: Tx Matrix Plus Seven-Input 420-A Power Supply Fault Tolerance - Juniper TX MATRIX PLUS Hardware Manual

TX Matrix Plus Router Hardware Guide
Related
Documentation
42
Figure 20: TX Matrix Plus Seven-Input 420-A Power Supply with Input
Power Tray Removed

Figure 21: TX Matrix Plus Input Power Tray

Seven-Input 420-A Power Supply Load Sharing and Fault Tolerance
When the TX Matrix Plus router is operating normally and both power supplies are
switched on, load sharing between them occurs automatically. When one power supply
fails or is turned off, the other power supply immediately assumes the entire electrical
load for the system. A single power supply can provide full power for as long as the TX
Matrix Plus router is operational. Table 17 on page 42 describes the behavior of the power
supply if an input fails.

Table 17: TX Matrix Plus Seven-Input 420-A Power Supply Fault Tolerance

Redundancy
Nonredundant power
supply
Redundant power supplies
TX Matrix Plus Power System Description on page 41
TX Matrix Plus Seven-Input 420-A Power Supply LEDs on page 43
Maintaining the TX Matrix Plus Power Supplies on page 268
Fault Tolerance When One Input Fails or Is Disconnected
NOTE: Redundant power supplies are required for the TX Matrix
Plus router. A nonredundant power supply is not supported.
If inputs through fail, the TX Matrix Plus router shuts down.
0 4
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 TX Matrix Plus router shuts down.
Copyright © 2010, Juniper Networks, Inc.