Connecting The Acx1000 Or Acx1100 Router To External Alarm And Clocking Devices; Device - Juniper ACX1000 Hardware Manual

CHAPTER 12
Connecting the ACX1000 or ACX1100
Router to External Alarm and Clocking
Devices
Connecting the ACX1000 or ACX1100 Router to an External Alarm-Reporting Device
Copyright © 2013, Juniper Networks, Inc.
Connecting the ACX1000 or ACX1100 Router to an External Alarm-Reporting
Device on page 53
Connecting the ACX1000 or ACX1100 Router to External Clocking Devices on page 54
To connect the router to external alarm-reporting devices, attach wires to the
relay contacts on the front panel of the router. A system condition that triggers the red
or yellow alarm on the router 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 20 AWG and 14 AWG (0.52 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 8 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 ( NC means "normally closed,
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.
C means "common," and (
ALARM
2
),
NO means "normally
53