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Product Numbers: AS58-360-AC, AS58-720-AC, DS58-PWR-2AC(=), DS58-PWR-AC=, 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.
The following sections are included in this document:
For information regarding the Cisco AS5800 Universal Access Server that is beyond the scope of this document or for additional information, use the following resources:
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 via 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.
Figure 1 shows a front view of a fully configured Cisco AS5800 Universal Access Server, and Figure 2 shows a rear view.
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.
Each AC-input power supply is powered ON by a separate power switch, which is located on the AC-input power shelf front panel (Figure 3). 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.
The AC-input power shelf is three rack units high [5.25 inches (13.32 cm)], and mounts underneath the dial shelf in a standard 19-inch, 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 Figure 4) 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), which monitors voltage tolerance levels, temperature conditions, and power failure in the AC-input power shelf. A grounding cable provides a ground connections from the AC-input power shelf to the dial shelf.
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.
Table 1 lists the AC-input power supply specifications.
| Description | Specification |
| Input | |
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2666.66 volt amps (VA) |
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200 to 240 VAC1 |
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50 to 60 hertz (Hz) |
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0.90 at 50% of full load; 0.99 at full load |
| Output | |
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2000W with a maximum configuration and one or two AC-input power supplies |
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-48.0 VDC2 typical. Frame GND strappable to either output terminal. |
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0 to 41.6 amps DC; 2000W maximum |
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58.1 amps DC maximum |
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88% at full load, 240 VAC, with ORing diode |
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25 in. lb |
| Environmental Characteristics | |
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5.25 x 17 x 14.4 in. (13.32 x 43.2 x 35.88 cm) |
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Per power supply: 14.5 lb (6.6 kg) Empty power shelf: 18 lb (8.16 kg) |
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1037 Btu/hr |
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12 American Wire Gauge (AWG), 16-amp3 |
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6 AWG, 2 pairs (black and red) |
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25.8 to 185 °F (-40 to 85 °C) |
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32 to 122 °F (0 to 50 °C) airflow front to back with 3 clearance for exhaust air in unpressurized enclosure |
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60 dBA typical; sound pressure level measured at 1 m |
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5 to 95% |
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-200 to 13,000 ft (-61 to 3,962 meters); derate at -7 °C/1000 ft. above 8000 ft |
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Lucent L-533809 |
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IEC1000-4-2 |
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7500 FITS per TR-EOP-000332 1.5 x 105 hours MTBF per RIN |
| Regulatory compliance | |
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CE For compliance information refer to the Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information document that shipped with your system. |
The AC-input power shelf is equipped with four types of cables:
The AC-input connection uses a 16A/250 VAC power cord in Europe and Asia, and a 20A/240 VAC power cord in North America. The 20-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. |
Figure shows a 20-amp power plug and receptacle used in North America.
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 via ring-lug connectors; the cables then connect to the DC terminal blocks in each PEM.
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.
Table 2 describes the DB-9 connector pin functions.
| 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 |
Table describes the DB-25 connector pin functions.
| 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 |
The AC-input power shelf includes two LEDs that are located on the left front of the power shelf and four LEDs that are located on the front of each power supply. (See Figure 8.)
The AC-input power supply LEDs are summarized in Table 4.
| LED | Color | Description |
|---|---|---|
| Power OK | Green |
For full redundancy, all power OK LEDs on the power shelf and each power supply should be on. |
| Fault | Yellow | Lights when the power shelf has detected an internal fault. |
| Temp | Yellow | Lights when the power shelf has shut down because of overtemperature conditions. |
| I LIM | Yellow | Lights when the power shelf is overloaded and operating in a current-limiting state.
The current limit LED lights for either of the following reasons:
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The power supplies have the following safety features:
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:
 | 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 unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit. |
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.
The rack-mounting hardware provided with your AC-input power shelf is suitable for standard 19-inch, 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 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-inch, 4-post equipment rack with a power strip along one of the back posts.
When using the rack-mounting hardware provided with your power shelf, consider the following guidelines:
When planning your rack installation, consider the following guidelines:
| | Caution To prevent power shelf overheating, never install your Cisco AS5800 Universal Access Server in a cabinet or room that is not properly ventilated or air conditioned. |
| | 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: |
| | Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded. |
| | 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. |
This section lists tools and parts you need to remove and replace individual power supplies, and explains how to install the AC-input power shelf in an equipment rack.
You need the following tools and parts to rack mount the power shelf:
You need the following tools and parts to remove and replace an individual power supply:
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 14.5 lb (6.6 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 the power switch for the power supply you are removing is in the OFF (O) position.
Step 3 Lift the metal spring-clip in the center of the ejector lever to release the lock. (The power supplies are secured by self-locking ejector levers. (See Figure 10.)
Step 4 Apply downward pressure to the ejector lever to disconnect the power supply from the power backplane.
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 self-locking ejector lever upward until the metal spring-clip locks into place (listen for the click). (See Figure 10.)
This completes the power supply replacement procedure. Proceed to the section "Installing the Power Shelf in the Rack" to rack-mount the power shelf.
You install the power shelf in the rack by securing the permanent mounting flanges to two posts or mounting strips in the rack 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 47 lb (21.31 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 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-inch 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-inch flat blade screwdriver.
Figure 11 illustrates the AC-input power shelf installed 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."
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:
To connect the DC interconnect power cables, complete the following steps:
Step 1 Verify the AC-input power switches on the power shelf front panel are in the OFF (O) position.
Step 2 Attach two red DC interconnect power cable ring lugs to the terminal stud labeled "BUS +" on the AC power shelf chassis rear. (See Figure 12.)
Step 3 Secure the ring lugs to the threaded stud with a hex nut.
Step 4 Loosen the screws in each power entry module (PEM) DC terminal block, located on the back of the dial shelf. (See Figure 12.)
Step 5 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 12.)
Step 6 Attach two black DC interconnect power cable ring lugs to the terminal stud labeled "BUS -" on the AC power shelf chassis rear. (Refer to Figure 12.)
Step 7 Secure the ring lugs to the threaded terminal stud with a hex nut.
Step 8 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 Figure 12)
This completes the DC power cabling installation. You must now connect the monitor cable from the AC-input power shelf to the dial shelf filter module.
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.
This completes the monitor cable installation. You must now ground 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 Figure 14, 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 Figure 14, 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 using a number 2 Phillips screwdriver.
This completes the ground cable installation. You must now connect the AC-input power cords.
To connect the AC power cords, complete the following steps:
Step 1 Plug each AC power cord into an AC receptacle on the AC-input power shelf rear. (See Figure 15.)
Step 2 Connect the opposite end of each power cord to an appropriate power 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. |
This completes the AC power cord installation.
For safety reasons, you must install the metal safety cover that shipped with your AC-input power shelf before you power up the system. The safety cover shields the power connections from possible short circuit and protects you from electrical shock.
To install the safety cover, follow these steps:
Step 1 Align the metal safety cover with the grooves on the back underside of the dial shelf. (See Figure 16.)
Step 2 Slide the safety cover into place and attach the front of the cover to the dial shelf with the screws provided.
| | Warning The safety cover is an integral part of the product. Do not operate the unit without the safety cover installed. Operation of the unit without the safety cover in place will invalidate the safety approvals and pose a risk of fire and electrical hazards. |
This completes the AC-input power shelf installation.
After installing your AC-input power shelf and connecting the cables, you start up the system by powering on the following components:
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 Figure 17). A green power LED on each PEM should light.
Step 3 Power ON ( | ) the two power switches located on the AC-input power shelf front panel (see Figure 18). Four green power OK LEDS should light.
Step 4 Power ON ( | ) the two power switches located on the router shelf rear. (See Figure 19.) Both green power supply OK LEDs should light.
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."
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.)
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. Refer to the Cisco AS5800 Universal Access Server Hardware Installation and Configuration Guide for system installation troubleshooting procedures, and to the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide for descriptions and examples of software features and commands.
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