Configuring and Turning On the Power
C H A P T E R
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Configuring and Turning On the Power
This chapter describes how to use the power supply in the Cisco VPN 5002
concentrator. The chassis is shipped standard with AC power, but you can order
an optional DC power supply. For information about switches and ports, see the
AC Power Supply Specifications section on page 3 and the DC Power Supply
Specifications section on page 5.
Contents
This chapter contains the following sections: Power Safety Warnings, page 1 Using the AC Power Supply, page 2 Using the DC Power Supply, page 5
Power Safety Warnings
Warning
Read the installation instructions before you connect the system to
its power source. Chapter 3 Configuring and Turning On the Power
Using the AC Power Supply
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Warning
Before you work on a chassis or work near power supplies, unplug
the power cord on AC units. Disconnect the power at the circuit
breaker on DC units.
Warning
Before you work on equipment that is connected to power lines,
remove jewelry (including rings, necklaces, and watches). Metal
objects will heat up when connected to power and ground and can
cause serious burns or weld the metal object to the terminals.
Warning
Secure all power cabling when you install this unit to avoid
disturbing field-wiring connections.
Warning
Care must be given to connecting units to the supply circuit so that
wiring is not overloaded.
Warning
Incorrect connection of this unit or connected equipment to a
general-purpose outlet could result in a hazardous situation.
Warning
Do not touch the power supply when the power cord is connected.
For systems with a power switch, line voltages are present within
the power supply even when the power switch is off and the power
cord is connected. For systems without a power switch, line
voltages are present within the power supply when the power
cord is connected.
Using the AC Power Supply
The chassis is shipped with a standard AC power supply. For information about
the optional DC power supply, see the Using the DC Power Supply section on
page 5. The following section describes how to attach the power cord retainer. 3-3
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Chapter 3 Configuring and Turning On the Power
Using the AC Power Supply
Installing the Power Cord Retainer
The power cord retainer (Figure 3-1) prevents the power cord from being
accidentally pulled out.
Figure 3-1
Power Cord Retainer
Complete the following steps to install the retainer
Step 1
Remove the voltage setting Warning label from the power port.
Step 2
Remove the front bezel by gripping its top lip or bottom lip firmly and forcefully
pulling the bezel off the chassis.
If you need to loosen the bezel from the chassis, insert a flat-blade screwdriver
under the bezel at the stud locations, as shown in Figure 3-2.
Figure 3-2
Removing the Front Bezel Chapter 3 Configuring and Turning On the Power
Using the AC Power Supply
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Step 3
Remove the power supply screw and use it to attach the retainer (Figure 3-3).
Figure 3-3
Attaching the Retainer
Step 4
Replace the front bezel by lining up the six studs with the chassis holes and
pressing the bezel firmly against the chassis until the studs snap into place.
Step 5
Plug in the power cord and attach the plug to the retainer using the provided
cable tie (Figure 3-4). 3-5
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Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
Figure 3-4
Attaching the Cable Tie
Step 6
Turn on the power by pressing the switch.
Warning
The power supply cord is used as the main disconnect device.
Ensure that the socket outlet is located or installed near the
equipment and is easily accessible.
Using the DC Power Supply
You can order an optional 48 VDC power supply for connection to DC power.
The following sections describe how to wire the provided power and alarm
connectors, and how to reset a power alarm.
Warning
Connect the unit only to a DC power source that complies with the
Safety Extra-Low Voltage (SELV) requirements in IEC 60950 based
safety standards. Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
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Warning
Before you perform 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.
Warning
This product requires that short-circuit (overcurrent) protection be
provided as part of the building installation. Install only in
accordance with national and local wiring regulations.
Wiring the Power Connector
The 48 VDC power supply includes a receptacle for a power connector. Wire the
provided connector to the DC power source before you plug it into the power
supply. For the DC power requirements, see the chassis back panel.
Figure 3-5 shows the wire locations for the DC power connector.
Figure 3-5
DC Connector Wiring Diagram
Wire the power connector as described in the following steps.
Warning
Use copper conductors only. 3-7
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Using the DC Power Supply
Step 1
Turn off the DC power source.
Step 2
Strip 0.125 inches (.3175 cm) of insulation from the end of a 14 AWG green frame
ground wire. Do not strip more than 0.125 inches.
Step 3
Insert a medium flat-blade screwdriver into the slot above the middle hole, and
insert the frame ground wire into the middle hole (Figure 3-6).
Figure 3-6
Attaching the Ground Wire
Step 4
Remove the screwdriver. The connector grips the wire securely.
Step 5
Repeat Steps 2, 3, and 4 to insert the following wires: 48 VDC power wire in the far right hole. Power ground return wire in the far left hole.
Step 6
Externally fuse the 48 VDC power wire with a 4-ampere (4A) fuse.
Step 7
Plug the DC power connector into the bottom connector on the front of the chassis
(Figure 3-7). Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
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Figure 3-7
Plugging In the Power Connector
Step 8
Turn on the DC power source.
Wiring the Alarm Connector
The 48 VDC power supply includes a receptacle for an alarm connector. If the
power supply malfunctions, the system sends an alarm to an external alarm
device. The alarm relay switch supports normally open and normally closed
positions. An alarm device that uses a normally open switch retains an open
contact when there is no alarm. A normally closed device retains a closed contact
when there is no alarm.
Figure 3-8 shows the wire locations for the alarm connector. 3-9
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Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
Figure 3-8
Alarm Connector Wiring Diagram
Wire the provided alarm connector as described in the following steps.
Step 1
Strip 0.125 inches (.3175 cm) of the insulation from the end of two 14 AWG
wires. Do not strip more than 0.125 inches.
Step 2
Insert a medium flat-blade screwdriver into the connector slot above the second
hole, and insert the Comm wire into the second hole from the left (Figure 3-9).
Figure 3-9
Attaching the Comm Wire
Step 3
Remove the screwdriver. The connector grips the wire securely. Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
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Step 4
Repeat Steps 2 and 3 to insert the other wire: For a normally open alarm, insert the wire into the far left hole. For a normally closed alarm, insert the wire into the far right hole.
Step 5
Plug the alarm connector into the top connector on the front of the chassis
(Figure 3-10).
Figure 3-10 Plugging In the Alarm Connector
If you plug in the alarm before you connect the power, the alarm activates
continuously. To avoid activating the alarm, plug in the power before you plug in
the alarm.
Resetting an Alarm
In the event of a power interruption or power failure to the ESP cards or VPN 5002
system, the power alarm activates. To reset the alarm, push the alarm cut-off
button on the front of the concentrator chassis (Figure 3-11).
Note
The Sys Ready LED on the ESP card in slot 0 must light green
before you push the alarm cut-off button. 3-11
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Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
Figure 3-11 Alarm Cut-off Button
If the system is still running despite alarm activation, the system was probably
disrupted by a temporary power failure. If the system is not running, the cause of
the alarm is either a continuing power failure or a catastrophic system failure.
Contact technical support. Chapter 3 Configuring and Turning On the Power
Using the DC Power Supply
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