Attaching The Alarm Wires - Cisco Universal Broadband Router uBR10012 Hardware Installation Manual

Connecting Alarm Indicators
If you did not connect the alarm indicators when you originally installed the Cisco uBR10012 chassis,
use the following procedure to connect an alarm indicator to the system. For safety and convenience
reasons, you need to remove power from the DC PEM on the right side (DC PEM "B") and remove that
DC PEM for easier access to the alarm indicators terminal block.
For more information on removing and replacing the DC PEM module, see
the Cisco uBR10012 Universal Broadband
For more information on removing and replacing the 3300 W DC PEM, see
Module for the Cisco uBR10012 Universal Broadband

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).
Use copper conductors only. Statement 1025
Warning
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.
For each pair of wires, strip not more than 0.3 inches (8 mm) of insulation off of the ends of each wire
Step 1
(see
Figure 5-5
Connect one end of each pair of alarm indicator wires to the alarm terminal block as follows:
Step 2
a.
b.
c.
Connect the other end of this pair of alarm indicator wires to the appropriate connectors on the alarm
Step 3
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
Secure the cabling to the chassis by feeding a tie wrap through one of the round holes next to the large
Step 5
hole on the side of the chassis. Then use the tie wrap to bind the cables to the chassis.
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
5-8
Figure 5-5).
Stripping Insulation
8 mm max
Connect one lead to the common (COM) terminal.
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.
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 5-6 shows the wiring configuration for normally open (NO) alarm relays.
3 for the remaining alarm indicators.
Chapter 5
Router.
Router.
Maintaining the Cisco uBR10012 Router
DC Power Entry Module for
3300 W DC Power Entry
OL-18259-09