Replacing Alarm Relay Wires On The M40E Router; Replacing The M40E Cooling System Components - Juniper M40E Hardware Manual

Replacing Alarm Relay Wires on the M40e Router

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Replacing the M40e Cooling System Components

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Plug the the other end of the cable into the device's serial port.
2.
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 24-AWG and 12-AWG (0.20 and 3.33 mm
which is not provided. Use the wire gauge appropriate for the external device you are
connecting.
To replace the wires connecting to an alarm-reporting device:
Disconnect the existing wire at the external device.
1.
Prepare the required length of replacement wire with gauge between 24-AWG and
2.
12-AWG (0.20 and 3.33 mm
Using a 2.5-mm flat-blade screwdriver, loosen the small screws on the face of the
3.
terminal block and remove the block from the relay contact.
Using the 2.5-mm flat-blade screwdriver, loosen the small screws on the side of the
4.
terminal block. Remove existing wires from the slots in the front of the block and insert
replacement wires. Tighten the screws to secure the wire.
Orient the terminal block according to the labels to the left of the appropriate relay
5.
contact ( means "normally closed,"
NC
open").
Plug the terminal block into the relay contact and use a 2.5 mm flat-blade screwdriver
6.
to tighten the screws on the face of the block.
Attach the other end of the wires to the external device.
7.
M40e Field-Replaceable Units (FRUs) on page 157
Tools and Parts Required to Remove Components from an M40e Router on page 309
Connecting the M40e Router to a Management Console or Auxiliary Device on page 113
M40e Routing Engine Description on page 26
M40e Chassis Description on page 8
Replacing the Fan Tray on an M40e Router on page 168
Replacing the M40e Air Filter on page 170
Replacing the M40e Front Impeller Assembly on page 172
Chapter 16: Replacing M40e Hardware Components
2
).
means "common," and
C
RED ALARM
2
),
means "normally
NO
167