Juniper Networks M160 Connecting to an External Alarm-Reporting Device, Connecting PIC Cables

Connecting the Router and Performing Initial Configuration

Figure 58: Console and Auxiliary Serial Port Connector

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Connecting to an External Alarm-Reporting Device

To connect the router to external alarm-reporting devices, attach wires to the RED ALARM and YELLOW ALARM relay contacts on the CIP. A system condition that triggers the red 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 mm2), 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, follow this procedure (see Figure 56):

1.Prepare the required length of wire with gauge between 24-AWG and 12-AWG (0.20 and 3.33 mm2).

2.While the terminal block is not plugged into the relay contact, use a 2.5 mm flat-blade screwdriver to loosen the small screws on its side. Insert wires into the slots in the front of the block. Tighten the screws to secure the wire.

3.Orient the terminal block according to the labels to the left of the appropriate relay contact (NC means “normally closed,” C means “common,” and NO means “normally open”).

4.Plug the terminal block into the relay contact and use a 2.5 mm flat-blade screwdriver to tighten the screws on the face of the block.

5.Attach the other end of the wires to the external device.

If attaching a reporting device for the other kind of alarm, repeat the procedure.

Connecting PIC Cables

Now connect PICs to the network by plugging in network cable. To connect cable to the PICs, follow this procedure (see Figure 59, which shows a fiber-optic PIC):

1.Have ready a length of the type of cable used by the PIC. For cable specifications, see the M160 Internet Router PIC Guide.

2.If the PIC cable connector port is covered by a rubber safety plug, remove

the plug.

Connecting PIC Cables 115