Figure 47: M120 Routing Engine Alarm Relay Contacts - Juniper Networks Hardware Manual

M120 Multiservice Edge Router Hardware Guide
86
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To connect an external device to an alarm relay contact (see Figure 47 on page 86):
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.

Figure 47: M120 Routing Engine Alarm Relay Contacts

means "common," and (
C NO
Copyright © 2010, Juniper Networks, Inc.
means "normally