T640 Alarm Relay Contacts; T640 Power System Overview - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
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T640 Alarm Relay Contacts

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T640 Power System Overview

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The upper set of ports, labeled
the lower set, labeled
HOST 1
the following ports:
—Connects the Routing Engine through an Ethernet connection to a
ETHERNET
management LAN (or any other device that plugs into an Ethernet connection) for
out-of-band management. The port uses an autosensing RJ-45 connector to support
both 10- and 100-Mbps connections. Two small LEDs on the left edge of the port
indicate the connection in use: the yellow LED lights for a 10-Mbps connection and the
green LED lights for a 100-Mbps connection.
—Connects the Routing Engine to a system console through an RS-232
CONSOLE
(EIA-232) serial cable.
— Connects the Routing Engine to a laptop, modem, or other auxiliary device
AUXILIARY
through an RS-232 (EIA-232) serial cable.
T640 Connector Interface Panel (CIP) Description on page 46
T640 DB-9 Connector Pinouts for the Routing Engine AUXILIARY and CONSOLE Ports
on page 368
T640 RJ-45 Connector Pinouts for the Routing Engine ETHERNET Port on page 367
Replacing the T640 Connections to Routing Engine Interface Ports on page 180
The CIP has two alarm relay contacts for connecting the router to external alarm devices.
Whenever a system condition triggers either the red or yellow alarm on the craft interface,
the alarm relay contacts are also activated. The alarm relay contacts are located below
the Routing Engine ports. The terminal blocks that plug into the alarm relay contacts are
supplied with the router. They accept wire of any gauge between 28-AWG and 14-AWG
2
(0.08 and 2.08 mm ), which is not provided. Use the gauge of wire appropriate for the
external device you are connecting.
T640 Connector Interface Panel (CIP) Description on page 46
Replacing the T640 Alarm Relay Wires on page 184
T640 Routing Engine Interface Cable and Wire Specifications on page 365
T640 Routing Engine Ports on page 47
T640 Power System Description on page 49
T640 Two-Input 160-A DC Power Supply Overview on page 49
T640 Two-Input 160-A DC Power Supply LEDs on page 51
T640 Three-Input 240-A DC Power Supply Overview on page 52
, connects to the Routing Engine in slot
HOST 0
, connects to the Routing Engine in slot
RE0
. Each set includes
RE1
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