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Cisco AS5800 Series Universal Gateways

Cisco AS5800 AC Power Supply Installation/Replacement

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Table Of Contents

AC-Input Power Shelf and Power Supply Installation and Replacement

Document Contents

If You Need More Information

Cisco AS5800 Universal Access Server Overview

AC-Input Power Shelf Overview

Specifications

AC-Input Power Shelf Cables

Power Shelf LED Indicators

Power Supply Safety Features

Safety Guidelines

Safety Warnings

Rack-Mounting Considerations

Rack-Mounting the AC-Input Power Shelf

Tools and Parts Required

Removing and Replacing a Power Supply Module

Installing the Power Shelf in the Rack

Connecting the Power Cables and Powering Up the System

Grounding the AC-Input Power Shelf to the Dial Shelf

Connecting the Monitor Cable

Connecting the DC Power Cables

Connecting the AC Power Cords

Powering On the Access Server

Verifying and Troubleshooting the Installation

Cisco Connection Online


AC-Input Power Shelf and Power Supply Installation and Replacement


Product Numbers: AS58-360-AC, AS58-720-AC, DS58-PWR-2AC/E(=), DS58-PWR-AC/E=, DS58-CAB-MBUS=, DS58-CAB-ACDC=

The AC-input power shelf is an optional component of the Cisco AS5800 Universal Access Server and is used to convert AC-input power into DC-output power for the DC-powered Cisco 5814 dial shelf. The AC-input power shelf contains two AC-input power supplies.

This document explains how to rack-mount the AC-input power shelf, attach the power cables, and verify the initialization after you power up the system. This document also explains how to remove and replace an individual power supply in the power shelf.


Note   Use this document with the Cisco AS5800 Universal Access Server Hardware Installation and Configuration Guide, the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide, and the Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information Guide that shipped with your system.


Document Contents

The following sections are included in this document:

If You Need More Information

Cisco AS5800 Universal Access Server Overview

AC-Input Power Shelf Overview

Safety Guidelines

Rack-Mounting Considerations

Rack-Mounting the AC-Input Power Shelf

Verifying and Troubleshooting the Installation

Cisco Connection Online

If You Need More Information

For additional information on the Cisco AS5800 Universal Access Server, use the following resources:

For Cisco AS5800 Universal Access Server hardware installation and maintenance information, see the Cisco AS5800 Universal Access Server Hardware Installation and Configuration Guide (Document Number DOC-AS5800-HICG=) that shipped with your system.

For Cisco AS5800 Universal Access Server software installation and configuration, see the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide (Document Number DOC-AS5800-SICG=) that shipped with your system.

For international agency compliance, safety, and statutory information for wide-area network (WAN) interfaces for the Cisco AS5800 Universal Access Server, see the document Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information (Part Number 78-4666-xx) that shipped with your system.

To obtain general information about documentation, refer to the section "Cisco Connection Online," or call Customer Service at 800 553-6387, or 408 526-7208. Customer service hours are 5:00 a.m. to 6:00 p.m., Pacific time, Monday through Friday (excluding Cisco-observed holidays). You can also send an e-mail to cs-rep@cisco.com, or see the Cisco Information Packet that shipped with your system.

Cisco Documentation CD-ROM package

Cisco documentation and additional literature are available in a CD-ROM package, that ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly; therefore, it may be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call Customer Service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback on the toolbar, and then select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.

For additional Cisco IOS software information, see the following publications, as appropriate for your configuration:

Configuration Fundamentals Configuration Guide

Configuration Fundamentals Command Reference

Dial Solutions Configuration Guide

Wide-Area Networking Configuration Guide

Wide-Area Networking Command Reference

Network Protocols Configuration Guide

Network Protocols Command Reference

Configuration Builder Getting Started Guide

Troubleshooting Internetworking Systems

Debug Command Reference

System Error Messages

Cisco IOS Software Command Summary

Cisco Management Information Base (MIB) User Quick Reference

Cisco AS5800 Universal Access Server Overview

The Cisco AS5800 Universal Access Server is a high-density ISDN and modem WAN aggregation system that provides both digital and analog call termination. It is intended to be used in service provider dial point-of-presence (POP), or centralized enterprise dial environments. The Cisco AS5800 Universal Access Server chassis components include a Cisco 5814 dial shelf and a Cisco 7206 router shelf. An optional AC power shelf is also available.

The dial shelf and router shelf are bundled, and can be ordered to support either AC or DC power. Included in the dial shelf is a blower assembly, filter module, and power entry modules (PEMs). Also included in the bundled system are ingress trunk cards, modem cards, dial shelf controller cards, Flash memory PCMCIA cards, cables, and Cisco IOS software. The dial shelf feature cards and host router shelf communicate through a dial shelf interconnect cable.

The Cisco AS5800 Universal Access Server can be configured for dual load-sharing, AC- or DC-input power. AC-input power is accepted via a separate, self-contained AC-input power shelf, which converts AC-input power into DC-output for use by the DC-powered dial shelf. The AC-input power shelf is rack-mounted and has a safety cover that shields the electrical connections in the power shelf rear.

The AC-input to DC-output connection supplies -48V DC-output power to two DC power supplies, called power entry modules (PEMs), in the dial shelf. The PEMs receive the -48 volts and transmit power to the filter module. Power flows through the filter module to the backplane where it is distributed to the dial shelf controller card(s) and feature cards.

shows a front view of a fully configured Cisco AS5800 Universal Access Server, and shows a rear view.

Figure 1 Cisco AS5800 Universal Access Server with AC-Input Power Shelf—Front View

Figure 2 Cisco AS5800 Universal Access Server with AC-Input Power Shelf—Rear View

AC-Input Power Shelf Overview

The AC-input power shelf includes two 2,000-watt (W) AC-input power supplies that plug into a common power backplane in the AC-input power shelf. A single AC-input power supply is capable of powering a fully configured Cisco 5814 dial shelf. A second power supply provides full redundancy.

During normal operation, the dual AC-input power supplies provide automatic load-sharing, with each power supply supporting 50 percent of the power load. When you remove one of the AC-input power supplies, the remaining power supply immediately ramps up to full power and maintains uninterrupted system power.


Note   The AC-input power supplies are "hot-swappable," allowing you to remove or replace a power supply while the system is operating; system operation will not be affected. Whenever possible, we recommend that you connect each AC-input power supply to a separate AC power source.


Each AC-input power supply is powered ON by a separate power switch, which is located on the AC-input power shelf front panel (). Ejector levers with locking spring clips secure each power supply to the backplane connectors, and a handle on each power supply allows you to remove and replace the power supplies with ease.

Figure 3 Cisco 5800 AC-Input Power Shelf—Front View

The AC-input power shelf is three rack units high [5.25 in. (13.32 cm)], and mounts underneath the dial shelf in a standard 19-in., 4-post or telco-type rack assembly. Note the rack placement of the AC-input power shelf in Figure 1.

All cable connections for AC-input power, DC-output power, and status signals are made from the AC-input power shelf rear. (See ) Two modular power cables connect each AC-input power supply to the site AC-input power source. Two DC-interconnect cables provide DC-output power to the dial shelf. A monitor cable provides a status signal connection to the dial shelf filter module maintenance bus (MBus), that monitors voltage tolerance levels, temperature conditions, and power failure in the AC-input power shelf. A grounding cable provides a ground connection from the AC-input power shelf to the dial shelf.

Figure 4 Cisco 5800 AC-Input Power Shelf—Rear View

Specifications

The AC-input power supply operates between 200 and 240 VAC input voltage and supplies -48 VDC to the dial shelf. The AC-input power supply uses a power factor corrector (PFC) that automatically adjusts for the input voltage being supplied.

lists the AC-input power supply specifications.

Table 1 AC-Input Power Supply Specifications 

Description
Specification
Input
 

Input power requirement

2666.66 volt amps (VA)

Input voltage

200 to 240 VAC1

Input frequency

50 to 60 hertz (Hz)

Power factor

0.90 at 50% of full load; 0.99 at full load

Output
 

Power output

2000W with a maximum configuration and one or two AC-input power supplies

Voltage out (VO) set point:

-48.0 VDC2 typical

Current out (IO) rated:

0 to 41.6 amps DC; 2000W maximum

Output current limit

(steady state)

58.1 amps DC maximum

Efficiency

88% at full load, 240 VAC with ORing diode

DC-output stud torque

25 in. lb

Environmental Characteristics
 

Dimensions (H x W x D)

5.25  x 17.32 x 13.6 in. (13.32 x 44 x 34.5 cm)

Weight

Per power supply: 11 lb (5 kg)

Empty power shelf: 14 lb (6.4 kg)

Heat dissipation

7755 Btu/hr

AC power cable supplied

12 American Wire Gauge (AWG), 16-amp3

DC interconnect cable supplied

6 AWG, 2 pairs (black and red)

Storage temperature

25.8 to 185 °F (-40 to 85 °C)

Operating Temperature
(air inlet to power unit)

32 to 122 °F (0 to 50 °C) airflow front to back with clearance for exhaust air in unpressurized enclosure

Acoustics

60 dBA typical; sound pressure level measured at 1 m

Humidity (noncondensing)

5 to 95%

Altitude

-200 to 13,000 ft (-61 to 3,962 meters); derate at -7 °C/1000 ft above 8000 ft

Shock and Vibration

Cisco Systems ENG-3396

ESD

IEC1000-4-2

Reliability (at 25 °C, 220 VAC, 2000 W)

150k hours MTBF

Regulatory compliance
 

Agency approvals

CE
UL
CSA
VDE

For compliance information see the Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information document that shipped with your system.

1 VAC = volts alternating current.

2 VDC = volts direct current.

3 Each AC-input power supply requires a minimum of 15-amp service, with a 15-amp receptacle at the power source. The power cable supplied with the Cisco AS5800 AC-input power shelf uses a 16-amp male plug.


AC-Input Power Shelf Cables

The AC-input power shelf is equipped with four types of cables:

Two AC power cords for AC input

Two DC interconnect cables for DC output

One DB-25 to DB-9 monitor cable for status signaling

One ground cable for grounding the power shelf to the dial shelf

The AC-input connection uses a 16A/250 VAC power cord in Europe and Asia, and a 15A/240 VAC power cord in North America. The 15-amp connectors on the AC-input power shelf are incompatible with 15-amp power strips used in most equipment racks and with the power source used for the router shelf.


Caution   Do not plug the AC-input power shelf into the same power source as the AC router shelf.


Note   Wiring codes prevent the AC-input power cable from being used with the power strips in equipment racks.


Figure 5 shows a 15-amp power plug and receptacle used in North America.

Figure 5 15-Amp AC Power Cord Connector and Plug, and 15-Amp Receptacle

The DC interconnect cables supplied with your AC-input power shelf (see Figure 6) attach to bus terminal studs in the AC-input power shelf through ring-lug connectors; the cables then connect to the DC terminal blocks in each PEM.

Figure 6 DC Interconnect Cables

The monitor cable has a DB-25 connector on the AC-input power shelf end and a DB-9 connector on the dial shelf end that connects to the dial shelf filter module. Figure 7 shows the monitor cable connectors and receptacles.

Figure 7 Monitor Cable

describes the DB-9 connector pin functions.

Table 2 Monitor Cable DB-9 Connector Pinout—Filter Module

Pin
Signal Description

1

Spare

2

Ground

3

AC power shelf fault signal

4

AC power shelf overtemperature signal

5

AC power failure warning signal

6

AC power shelf missing module

7

Ground

8

Ground

9

Ground


describes the DB-25 connector pin functions.

Table 3 Monitor Cable DB-25 Connector Pinout—AC Power Shelf 

Pin
Signal Description

1

Not used

2

Not used

3

Not used

4

Not used

5

Not used

6

Not used

7

Not used

8

Ground

9

AC power shelf fault signal

10

AC power shelf overtemperature signal

11

AC power failure warning signal

12

AC power shelf missing module

13

Ground

14

Not used

15

Not used

16

Not used

17

Not used

18

Not used

19

Ground

20

Not used

21

Not used

22

Not used

23

Not used

24

Not used

25

Not used


Power Shelf LED Indicators

The AC-input power shelf includes two inputs that are located on the left front of the power shelf and three LEDs that are located on the front of each power supply (See Figure 8.)

Figure 8 Power Supply LEDs

The AC-input power supply LEDs are summarized in .

Table 4

LED
Color
Description

AC GOOD

Green

On indicates power is present and within the specified voltage and frequency levels.

Blinking - indicates an AC power fault condition.

PWR FAIL

Red

On indicates a power fault condition such as over voltage, under voltage, over temperature, or HV bus low.

PWR GOOD

Green

On indicates AC voltage is within specified levels.


AC-Input Power Supply LEDs

Power Supply Safety Features

The power supplies have the following safety features:

AC power supplies installed in the AC-input power shelf are protected against overcurrent by circuit breakers, and against overtemperature by internal protection circuits.

A metal spring-clip locking mechanism in the ejector levers holds individual AC power supplies in place and prevents the power supply from vibrating or sliding out of the power bay and dislodging from the power backplane.

Double grounding lugs (as per NEBS requirements) on both the AC-input power shelf and the dial shelf provide electrical grounding.

A metal safety cover slides into grooves on the rear underside of the dial shelf to shield the DC power cables from possible short circuit and to protect from electrical shock.

The power supplies are self-monitoring. Each power supply monitors its own temperature and internal voltages. An internal fan in each power supply draws cooling air from the front of the power shelf, through the power supply, and out the rear of the power shelf. The power supply airflow is separate from that of the rest of the Cisco AS5800 Universal Access Server components.

Internal monitoring data is passed to the dial shelf through the maintenance bus (MBus) monitoring system. You can view this data through a terminal connected to the router shelf console port. The command to display the monitoring information is described in the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide (DOC-AS5800-SICG=).

Safety Guidelines

The AC-input power supplies are hot-swappable, which allows you to remove or replace a power supply without affecting system operation. Before removing a redundant power supply, ensure the remaining power supply is powered ON for uninterrupted system operation.

This section provides safety guidelines to help you avoid injury to yourself and avoid damage to the equipment. The following safety guidelines are recommended when working with any equipment that connects to electrical power or telephone wiring:

Locate the emergency power-off switch for the room in which you are working before beginning any procedures requiring access to the power shelf interior.

Disconnect all power and external cables before moving a power shelf.

Never work alone when potentially hazardous conditions exist.

Never assume that power has been disconnected from a circuit; always check.

Never perform any action that creates a potential hazard to people or makes the equipment unsafe.

Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.

This unit is to be installed in a restricted access area in accordance with articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70.

Safety Warnings

Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. To see translations of safety warnings pertaining to the access server, refer to the Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information document that shipped with your Cisco AS5800 Universal Access Server.

Warning   This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

Waarschuwing  Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.

Varoitus  Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).

Attention  Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.

Warnung  Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.

Avvertenza  Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.

Advarsel  Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.

Aviso  Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.

¡Advertencia!  Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.

Varning!  Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.

Warning   This unit is intended for installation in restricted access areas. A restricted access area is where access can only be gained by service personnel through the use of a special tool, lock and key, or other means of security, and is controlled by the authority responsible for the location.

Warning   This unti might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit.

Rack-Mounting Considerations

The rack-mounting hardware provided with your AC-input power shelf is suitable for standard 19-in., 4-post and telco-type equipment racks. Use the permanent mounting flanges on the front of the power shelf to install the power shelf in the rack.

Some equipment racks provide a power strip along the length of one of the rack-mounting strips. If your rack has a power strip, consider the position of the strip when planning fastener points to ensure that you will be able to slide power supplies into and out of their respective bays. If the power strip impairs a rack-mount installation, remove the power strip before installing the power shelf in the rack, then replace it after the power shelf is installed.

Figure 9 shows a typical 19-in., 4-post equipment rack with a power strip along one of the back posts.


Note   The AC-input power shelf uses 250V, 20-amp connectors, which are incompatible with the 125V, 15-amp power strips (shown in Figure 9) typically mounted in equipment racks.


Figure 9 Typical 19-in. Equipment Rack Posts and Mounting Strips

When using the rack-mounting hardware provided with your power shelf, consider the following guidelines:

The width between the inner sides of the two posts or rails must be at least 17.50 in. (43.18 cm).

The height of the power shelf is 5.25 in. (13.32 cm).

Use all screws provided to secure the power shelf to the rack posts.

When planning your rack installation, consider the following guidelines:

Install the power shelf in an open rack whenever possible. If installation in a cabinet is unavoidable, ensure that the rack has adequate ventilation.


Caution   To prevent the power shelf from overheating, never install your Cisco AS5800 Universal Access Server in a cabinet or room that is not properly ventilated or air conditioned.

If you plan to use an equipment shelf, ensure that the shelf is constructed to support the weight and dimensions of the power shelf.

Allow sufficient clearance around the rack for maintenance. You need 24 inches (61 cm) of clearance to remove and replace system components.

Always install heavier equipment in the lower half of a rack to maintain a low center of gravity and prevent the rack from falling over.

Warning   To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.

If you use telco-type racks, verify the rack is bolted to the floor and secured, as only one end of the power shelf mounts to the two rack posts. Ensure the weight of the power shelf does not make the rack unstable.

When connecting AC-input power shelf to the site power source (supply circuit), take care not to overload the wiring.

Warning   Care must be given to connecting units to the supply circuit so that wiring is not overloaded.

Ensure that the dial shelf is connected to earth ground during normal use.

Warning   This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use.

Warning   When installing the unit, the ground connection must always be made first and disconnected last.

Warning   This unit has more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit.

Rack-Mounting the AC-Input Power Shelf

This section lists the tools and parts that you need to remove and replace individual power supplies. This section also explains how to install the AC-input power shelf in an equipment rack.

Tools and Parts Required

You need the following tools and parts to rack-mount the power shelf:

AC-input power shelf with dual AC power supplies (DS58-PWR-2AC)

Two AC power cables (CAB-DS-AC=, other options available)

Two pairs of DC interconnect cables (CAB-5800-ACDC=)

One DB-25 to DB-9 monitor cable (CAB-PEM=)

One 6 gauge ground cable

Two hex nuts and M4 screws

Four 10-32 x 3/8-in. slotted screws

One metal safety cover and screws

3/8-in. nut driver

Number 2 Phillips screwdriver

1/4-in. flat blade screwdriver

Wire strippers, if needed, for your DC power cables

Several cable ties to temporarily anchor the cables out of the way, if necessary

You need the following tools and parts to remove and replace an individual power supply:

AC power supply (DS58-AC-PWR=)

ESD-preventive wrist strap

If access to the power supply bays is partially blocked by a power strip or other permanent rack fixture, you will need a 1/4-in., flat-blade screwdriver to temporarily detach the fixture from the equipment rack-mounting strips.

Removing and Replacing a Power Supply Module

Use the following procedure if you are replacing a faulty power supply or if you want to reduce the weight of the power shelf before you install it in a rack. If you do not want to remove power supplies prior to rack-mounting the AC-input power shelf, skip this section and proceed to the section "Installing the Power Shelf in the Rack."

The AC-input power shelf is configured with two power supplies. You can remove or replace one of the power supplies without affecting system operation. When power is removed from one supply, the redundant power feature causes the second power supply to ramp up to full power and maintain uninterrupted system operation.

To remove a power supply, follow these steps:


Caution   A single power supply weighs 11 lb (5 kg). Use both hands when removing or replacing a power supply.


Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.

Step 2 Ensure that the power switch for the power supply you are removing is in the OFF (O) position.


Note   Power supplies are numbered 1 and 2 from left to right in the power shelf.


Step 3 Twist the thumbscrew located in the ejector lever to unlock the power supply (See Figure 10.)

Step 4 Lift the ejector lever to disconnect the power supply from the power backplane.

Figure 10 Removing and Replacing a Power Supply

Step 5 Grasp the power supply handle and pull the power supply halfway out of the bay. Then with your other hand under the power supply to support it, pull the power supply completely out of the bay.

To replace the power supply, follow these steps:


Step 1 Slide the power supply into the power supply bay. Push the power supply fully into the power shelf until the front is flush against the power shelf frame. To prevent damage to the backplane connector, do not jam the power supply into the bay.

Step 2 Push the ejector lever upward until it connects with the front of the power supply. (See Figure 10.)

Step 3 Twist the thumbscrew to lock the power supply unit into place.

This completes the power supply replacement procedure. Proceed to the section "Installing the Power Shelf in the Rack" to rack-mount the power shelf.

Installing the Power Shelf in the Rack

You install the power shelf in the rack by securing the permanent mounting flanges to two posts or mounting strips in the rack by using the slotted mounting screws provided. Because the mounting flanges support the weight of the entire power shelf, be sure to use at least two slotted screws per mounting flange.


Caution   To maintain a low center of gravity, ensure that heavier equipment is installed near the bottom of the rack.


Caution   The AC-input power shelf with both power supplies installed weighs approximately 36 lb (16.33 kg). Use caution when lifting the power shelf. Bend your knees and lift using your legs. Do not strain your back.

To install the power shelf in the rack, follow these steps:


Step 1 Verify that your path to the rack is unobstructed and ensure that the rack is stabilized.

Step 2 Position the power shelf in front of the rack. To prevent injury, avoid sudden twists or moves.

Step 3 Lift and slide the power shelf into the rack, pushing it back until the front mounting flanges meet the mounting strips or posts on both sides of the equipment rack.

Step 4 Position the power shelf so that the holes in the mounting flanges are aligned to those in the mounting strips while keeping the mounting flanges flush against the posts or mounting strips.

Step 5 Insert the 10-32 x 3/8-in. slotted screws (two screws per side at a minimum) through the power shelf mounting flange and into the mounting strip. Tighten all screws using a 1/4-in. flat blade screwdriver.

Figure 11 illustrates the AC-input power shelf installed in a 4-post rack.

Figure 11 Installing the AC-Input Power Shelf in a 4-Post Rack

To connect the power cables and power up the system, proceed to the section "Connecting the Power Cables and Powering Up the System."

Connecting the Power Cables and Powering Up the System

You need to connect all cables between the AC-input power shelf and the dial shelf before you connect the power shelf to your AC power source. You also need to install the provided electrical connection safety cover at the rear of the power shelf before you power up the system.

Warning   This unit has more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit.

You need the following parts and tools to connect the power cables:

Two pairs of DC interconnect power cables (CAB-5800-ACDC=)

3/8-in. hex nut driver

1/4-in. flat-blade screwdriver

Grounding the AC-Input Power Shelf to the Dial Shelf

To attach the ground cable between the AC-input power shelf and the dial shelf, complete the following steps:


Step 1 Attach the ground cable double ring lug to the ground posts on the rear of the AC-input power shelf. (See , lower chassis.)

Step 2 Secure the double ring lug to both threaded ground posts with a hex nut on each stud.

Step 3 Thread an M4 screw through one hole of the double ring lug on the other end of the ground cable; then, thread the screw into the threaded pemnut in the underside of the dial shelf chassis and partially tighten the screw. (See , upper chassis.)

Step 4 Align the second ring lug hole with the second pemnut in the underside of the dial shelf chassis and thread a screw through the hole.

Step 5 Tighten both screws with a number 2 Phillips screwdriver.

Figure 12 Attaching the Ground Wire

This completes the ground cable installation. You must now connect the monitor cable from the AC-input power shelf to the dial shelf filter module.

Connecting the Monitor Cable

To connect the monitor cable, complete the following steps:


Step 1 Attach the monitor cable DB-25 plug to the DB-25 receptacle on the rear of the AC-input power shelf. (See Figure 13.)

Step 2 Tighten the jackscrews.

Step 3 Attach the monitor cable DB-9 plug to the DB-9 receptacle at the base of the dial shelf filter module. (See Figure 13.)

Step 4 Tighten the jackscrews.

Figure 13 Connecting the Monitor Cable

This completes the monitor cable installation. You must now connect the DC power cables.

Connecting the DC Power Cables

To connect the DC interconnect power cables, complete the following steps:


Step 1 Verify that the AC-input power switches on the power shelf front panel are in the OFF (O) position.


Note   Both AC-input power switches must be in the OFF position or the bus will be active and possible injury could occur. Always ensure that the breakers are in the OFF position.


Step 2 Loosen the screws in each power entry module (PEM) DC terminal block, located on the back of the dial shelf (see Figure 14).

Step 3 Fit the exposed wire end of one red insulated cable into the DC terminal block labeled "-48V RTN" on each PEM and securely tighten the terminal block connector screws (see ).

Figure 14 Connecting the DC-Interconnect Cables

Step 4 Fit the exposed wire end of the black insulated cable into the DC terminal block labeled "-48V" on each PEM and securely tighten the terminal block connector screws (see ).


Note   You must attach the red DC cables to the stud labeled "BUS +" on the AC-input power shelf and connect the other end to a "-48V RTN" terminal on each PEM. You must attach the black DC cables to the stud labeled "BUS -" and connect the other end to a "-48V" terminal on each PEM. If the two DC conductors entering the PEM terminal block are reversed, a yellow warning LED on the PEM lights to indicate a miswire. No damage will occur; however, you must power OFF the power at the source and reverse the connections.


Connecting the AC Power Cords

To connect the AC power cords, complete the following steps (see Figure 15):


Step 1 Plug each AC power cord into an AC receptacle on the rear of the AC-input power shelf.

Step 2 Connect the opposite end of each power cord to an appropriate power source.


Note   For maximum redundancy, connect each power cord to a separate AC source.


Caution   Do not plug the AC-input power shelf into the same power source as the router shelf or into the power strip on your equipment rack. The 20-amp connectors on the AC-input power shelf are incompatible with the power source used for the router shelf and with the 15-amp power strips used in most equipment racks.



Note   Do not attempt to power the unit from a 120 VAC nominal line.


Figure 15 Connecting the AC Power Cords

This completes the AC power cord installation.

Powering On the Access Server

After installing your AC-input power shelf and connecting the cables, start the system by powering ON the following components:

Dial shelf

AC-input power shelf

Router shelf

To power on the system, complete the following steps:


Step 1 Power ON the central office main circuit breaker.

Step 2 Power ON ( | ) the power switches located on each dial shelf PEM front panel (see ). A green power LED on each PEM should light.

Figure 16 Power Entry Module (PEM) Power Switches

Step 3 Power ON the two power switches located on the AC-input power shelf front panel (see ). Four green power LEDs should light.


Note   There are two power switches on the AC-input power shelf, one for each power supply. You must power ON both switches to enable load sharing.


Figure 17 AC-Input Power Shelf—Front View

Step 4 Power ON the two power switches located on the rear of the router shelf r (See .) Both green power supply OK LEDs should light.

Figure 18 Router Shelf Power Switches—Rear View

Step 5 Listen for fans in both the router shelf and the dial shelf; you should hear them operating immediately.

This completes the process for installing and cabling the AC-input power shelf and for powering on the access server. For installation troubleshooting tips, proceed to the section "Verifying and Troubleshooting the Installation."

Verifying and Troubleshooting the Installation

To complete the installation, verify that the power supply LEDs operate properly as follows: (Review the descriptions of the LEDs in the section "Power Shelf LED Indicators" earlier in this document)

Verify that the power OK LED is on.

If a power supply power LED is off, verify the associated AC power cord is plugged in, and the correct AC voltage (200 to 240 VAC) is present at the source.

Verify that the fault LED is off.

If a power supply fault LED lights, the power shelf has detected an internal fault; the power supply is defective. You must replace the power supply.

Verify that the overtemp LED is off.

If a power supply overtemperature LED lights, verify that the ambient temperature is below 50 C and the air intake is not blocked. If the condition persists, replace the power supply.

Verify that the current limit LED is off.

If a power supply current limit LED lights, verify that the DC-output terminals on the rear of the AC-input power shelf are not short circuited, and an approved dial shelf configuration is being used.


Note   An approved dial shelf configuration has a maximum of 10 modem cards installed.


If a power supply fails to operate properly after several attempts to initialize it, contact a service representative for assistance.

This completes the power supply installation. See the Cisco AS5800 Universal Access Server Hardware Installation and Configuration Guide for system installation troubleshooting procedures, and the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide for descriptions and examples of software features and commands.

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Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.

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