Cisco Systems Cisco uBR10012 manual Attaching the Alarm Wires, Stripping Insulation

Chapter 5 Maintaining the Cisco uBR10012 Router

Connecting Alarm Indicators

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Statement 7

Step 4 Loosen the captive screws on the DC PEM. Pull the DC PEM from the chassis using the handle on the faceplate (see Figure 5-12). Set the DC PEM aside.

Attaching the Alarm Wires

For each alarm indicator being connected (minor, major, or critical), use two wires that are long enough to reach between the Cisco uBR10012 chassis and the alarm indicator equipment. Use the gauge of wire required by the audible or visual alarm indicator equipment you are using (14 AWG maximum gauge).

Warning Use copper conductors only. Statement 1025

Caution The alarm contacts on the Cisco uBR10012 router are only relays and do not provide any power from the unit. These relays are rated for 60 VDC, 1 A maximum—ensure that the connected alarm equipment does not exceed these voltage and current ratings.

Step 1 For each pair of wires, strip not more than 0.3 inches (8 mm) of insulation off of the ends of each wire (see Figure 5-16).

Figure 5-16 Stripping Insulation

8 mm max

58688

Step 2 Connect one end of each pair of alarm indicator wires to the alarm terminal block as follows:

a.Connect one lead to the common (COM) terminal.

b.If you are wiring the router in series with other equipment for the alarm indicators, wire the other lead to the normally closed (NC) terminal.

c.If you are wiring the router in parallel with other equipment for the alarm indicators, wire the other lead to the normally open (NO) terminal.

Figure 5-17shows the wiring configuration for normally open (NO) alarm relays.

Step 3 Connect the other end of this pair of alarm indicator wires to the appropriate connectors on the alarm indicator equipment. Route these cables through the square hole on the bottom right side of the chassis, as you face the front of the chassis.

Step 4 Repeat steps through 3 for the remaining alarm indicators.

	Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
OL-18259-01		5-19