Powering On A Dc-Powered T640 Router - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

Powering On a DC-Powered T640 Router

130
General Electrical Safety Guidelines and Electrical Codes for M Series, MX Series, and
T Series Routers on page 324
Site Electrical Wiring Guidelines for M Series and T Series Routers on page 346
To power on a DC-powered router:
Verify that the power supply is fully inserted in the chassis and that the captive screws
1.
on their faceplates are tightened.
Verify that the source power cables are connected to the appropriate terminal: the
2.
positive (+) source cable to the return terminal (labeled
source cable to the input terminal (labeled
Verify that an external management device is connected to one of the Routing Engine
3.
ports on the CIP ( AUXILIARY
connecting management devices, see "Overview of Connecting the T640 Router to
Management and Alarm Devices" on page 117.
Turn on the power to the external management device.
4.
Switch on the customer site circuit breakers to provide voltage to the DC power source
5.
cables.
For a three-input 240-A DC power supply in
6.
LEDs on the power supply faceplate are lit steadily, indicating that the inputs
PRESENT
are receiving power.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
7.
the strap to one of the ESD points on the chassis.
Switch the circuit breakers on one of the power supplies to the on position (
8.
NOTE: After a power supply is powered on, it can take up to 60 seconds
for status indicators—such as the LEDs on the power supply, the command
output displays, and messages on the LED display on the craft interface—to
indicate that the power supply is functioning normally. Ignore error
indicators that appear during the first 60 seconds.
Verify that the CB ON LEDs on the power supply faceplate are lit steadily. The
9.
LEDs blink momentarily, then light steadily to indicate that the circuit breakers are on.
Verify that the LED on the power supply faceplate is lit steadily, indicating that
DC OK
10.
the power supply is correctly installed and is functioning properly.
).
–48V
, CONSOLE , or ETHERNET ). For more information about
2–INPUT mode, verify that the
Copyright © 2010, Juniper Networks, Inc.
RTN ) and the negative (–)
INPUT
).
|
CB ON