Connecting The M320 Router To An External Alarm-Reporting Device; Connecting The M320 Router To An External Clocking Device - Juniper M320 Hardware Manual

M320 Multiservice Edge Router Hardware Guide
Related
Documentation

Connecting the M320 Router to an External Alarm-Reporting Device

Related
Documentation

Connecting the M320 Router to an External Clocking Device

168
M320 Routing Engine Interface Cable and Wire Specifications on page 115
Overview of Connecting the M320 Router to Management and Alarm Devices on
page 164
To connect the router to external alarm-reporting devices, attach wires to the
and relay contacts on the CIP. A system condition that triggers the red
YELLOW ALARM
or 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 ).
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
While the terminal block is not plugged into the relay contact, use a 2.5-mm flat-blade
3.
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
4.
contact ( means "normally closed,
NC
open").
Plug the terminal block into the relay contact and use a 2.5-mm flat-blade screwdriver
5.
to tighten the screws on the face of the block.
Attach the other end of the wires to the external device.
6.
If attaching a reporting device for the other kind of alarm, repeat the procedure.
Overview of Connecting the M320 Router to Management and Alarm Devices on
page 164
M320 Routing Engine Interface Cable and Wire Specifications on page 115
The M320 router contains two external clock input (
on each control board (CB) labeled
means "common," and (
C
EXTERNAL CLOCK INPUTS
or .
A B
Copyright © 2015, Juniper Networks, Inc.
RED ALARM
2
),
means "normally
NO
) ports