Cisco Cisco ACNS Software Version 5.5 Quick Setup Guide
14
Warning
The customer 48 volt power system must provide reinforced insulation between the primary AC power and
the 48 VDC output.
the 48 VDC output.
Step 1
Loosen the terminal screws from the terminals marked plus (+) and minus (–) on the DC power receptacle.
Step 2
Strip the ends of two DC power cable wires to expose approximately 1/4 inch (6.35 mm) of copper wire.
Use only two strands of wire for the DC terminal. You do not need to wire the DC ground terminal. To ground the
chassis, follow the grounding instructions in the “Ground the Chassis” section on page 12.
chassis, follow the grounding instructions in the “Ground the Chassis” section on page 12.
Step 3
Depending on your site DC power source, connect two wires: one to the plus (+) terminal and one to the minus (–)
terminal.
terminal.
•
If your source DC power is +48 volts, connect the +48 volt wire to the plus (+) terminal and the 0 (zero) volt wire
to the minus (–) terminal.
to the minus (–) terminal.
•
If your source DC power is –48 volts, connect the –48 volt wire to the minus (–) terminal and the 0 (zero) volt wire
to the plus (+) terminal.
to the plus (+) terminal.
Note
The higher-voltage wire is always connected to the plus (+) terminal. You can use a voltage meter to
measure the voltage on each terminal. You must maintain a +48 voltage between the two terminals
with the higher-voltage wire connected to the plus (+) terminal.
measure the voltage on each terminal. You must maintain a +48 voltage between the two terminals
with the higher-voltage wire connected to the plus (+) terminal.
Step 4
Tighten the terminal screws using a screwdriver.
Step 5
Connect the other end of the DC power cord to your site power source.
Step 6
To power up the device, press the power switch. This switch toggles between on and off. A power light on the front
panel, when lit, indicates that the power is on.
panel, when lit, indicates that the power is on.
The system should begin booting. Once the operating system boots, you are ready to configure the network settings. (See the
“Perform an Initial Startup Configuration” section on page 16.)
“Perform an Initial Startup Configuration” section on page 16.)
Note
If you have wired the DC terminals incorrectly, the Content Engine will not boot. Incorrect wiring will not
damage your system or cause you any harm. If your system fails to boot because you have wired the DC
terminals incorrectly, simply switch the wires between the two terminals.
damage your system or cause you any harm. If your system fails to boot because you have wired the DC
terminals incorrectly, simply switch the wires between the two terminals.
Connecting a DC Power Cord—7-RU Chassis
You need to supply your own DC power cord. In the United States use 14-AWG stranded or solid copper wire that is rated for
a minimum temperature of 75°C (167°F); elsewhere consult local and national electrical code for proper wire sizing. Use the
Cisco-supplied DC connector and follow these steps to attach the wire to the DC connector terminals.
a minimum temperature of 75°C (167°F); elsewhere consult local and national electrical code for proper wire sizing. Use the
Cisco-supplied DC connector and follow these steps to attach the wire to the DC connector terminals.
Caution
The DC power supply cord requires 14-AWG wire that is rated for a minimum temperature of 75°C
(167°F). The DC power supply has a 320W output at 14A maximum current. Installation should be done
in compliance with your national and local electrical code.
(167°F). The DC power supply has a 320W output at 14A maximum current. Installation should be done
in compliance with your national and local electrical code.
Warning
Before connecting or disconnecting ground or power wires to the chassis, 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.
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.