Connecting The M320 Router To An External Alarm-Reporting Device; Connecting Pic Cables To The M320 Router; Figure 51: Console And Auxiliary Serial Port Connector - Juniper M320 Hardware Manual

M320 Router Hardware Guide

Connecting the M320 Router to an External Alarm-Reporting Device

Connecting PIC Cables to the M320 Router

92

Figure 51: Console and Auxiliary Serial Port Connector

To connect the router to external alarm-reporting devices, attach wires to the
relay contacts on the CIP. A system condition that triggers the red or yellow
YELLOW
alarm LED on the craft interface also activates the corresponding alarm relay contact.
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 (0.08 and 2.08 mm
which is not provided. Use the gauge of wire appropriate for the external device you are
connecting.
To connect an external device to an alarm relay contact:
Prepare the required length of wire with gauge between 28-AWG and 14-AWG (0.08
1.
2
and 2.08 mm ).
While the terminal block is not plugged into the relay contact, use a 2.5-mm flat-blade
2.
screwdriver to loosen the small screws on its side. With the small screws on its side
facing left, insert wires into the slots in the front of the block based on the wiring for
the external device. Tighten the screws to secure the wire.
Orient the terminal block according to the labels to the left of the appropriate relay
3.
contact ( means "normally closed,
NC
open").
Plug the terminal block into the relay contact and use a 2.5-mm flat-blade screwdriver
4.
to tighten the screws on the face of the block.
Attach the other end of the wires to the external device.
5.
If attaching a reporting device for the other kind of alarm, repeat the procedure.
Now connect PICs to the network by plugging in network cable. To connect cable to the
PICs (see Figure 52 on page 93, which shows a fiber-optic PIC):
Have ready a length of the type of cable used by the PIC. For cable specifications, see
1.
the T320 Core Router PIC Guide.
If the PIC cable connector port is covered by a rubber safety plug, remove the plug.
2.
WARNING: Do not look directly into a fiber-optic transceiver or into the
ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable
connected to a transceiver emit laser light that can damage your eyes.
means "common," and (
C
Copyright © 2010, Juniper Networks, Inc.
RED and
2
),
means "normally
NO