Catalyst 4500-X DC Power Supply Installation Note

Table Of Contents

Catalyst 4500-X DC-Input Power Supply Installation Note

Contents

DC-Input Power Supply Features

Safety

Statement 1071—Warning Definition

Tools Required

Installing the Power Supply

Removing the Power Supply

Power Supply Specifications

Related Documentation

Obtaining Documentation and Submitting a Service Request

Catalyst 4500-X DC-Input Power Supply Installation Note

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Revised: October 15, 2012

Product Numbers:

C4KX-PWR-750DC-F(=)

C4KX-PWR-750DC-R(=)

C4KX-PWR-BLANK(=)

This document covers installing and removing the DC-input power supply in the Catalyst 4500-X series switch chassis.

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Note DC-input power supplies are not included as part of the basic chassis configuration product numbers. The DC-input power supplies must be ordered separately.

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Contents

This installation note contains the following sections

•DC-Input Power Supply Features

•Safety

•Tools Required

•Installing the Power Supply

•Removing the Power Supply

•Power Supply Specifications

•Related Documentation

•Obtaining Documentation and Submitting a Service Request

DC-Input Power Supply Features

There are two versions of the 750 W DC-input power supply, the C4KX-PWR-750DC-F power supply which has back-to-front airflow (the release lever is color-coded blue indicating cool side) and the C4KX-PWR-750DC-R power supply which has front-to-back airflow (the release lever is color-coded burgundy indicating warm side). Both power supplies provide 750 W of power. Figure 1 shows the DC-input power supply and identifies the major features.

Figure 1 750 W DC-Input Power Supply Features

1	Source DC cable plug (detachable)	5	FAIL LED (amber)
2	Power supply handle	6	OK LED (green)
3	DC power cable retaining strap (velcro)	7	Retention latch clip
4	Release lever (color-coded for airflow direction. Burgundy indicates front-to-back; blue indicates back-to-front)

The DC-input power supply has two LEDS mounted on the lower left corner of the power supply front panel. (See Figure 1.) Together, the two LEDs provide the status of the power supply. Table 1 provides the status meanings of the LEDs.

Table 1 DC-Input Power Supply Status LEDs Meanings 

OK LED (Green)	FAIL LED (Amber)	Description
Off	Off	No source DC power detected by the power supply.
Off	On	Power supply failure (includes overvoltage, overcurrent, overtemperature, or fan failure).
Off	Blinking	Power supply warning situation where the power supply continues to operate (possible scenarios include high temperature, high power, or slow fan).
Blinking	Off	Source DC is present. The 3.3 VDCsb (standby) is on. The power supply is off.
On	Off	Power supply is ON and is functioning normally.

Safety

Warning statements in the document use the following conventions:

Statement 1071—Warning Definition

Warning	IMPORTANT SAFETY INSTRUCTIONS 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. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071 SAVE THESE INSTRUCTIONS
Waarschuwing	BELANGRIJKE VEILIGHEIDSINSTRUCTIES 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 de standaard praktijken om ongelukken te voorkomen. Gebruik het nummer van de verklaring onderaan de waarschuwing als u een vertaling van de waarschuwing die bij het apparaat wordt geleverd, wilt raadplegen. BEWAAR DEZE INSTRUCTIES
Varoitus	TÄRKEITÄ TURVALLISUUSOHJEITA Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia vammoja. Ennen kuin käsittelet laitteistoa, huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu onnettomuuksien yleisiin ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien lausuntonumeroiden avulla. SÄILYTÄ NÄMÄ OHJEET
Attention	IMPORTANTES INFORMATIONS DE SÉCURITÉ Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil, référez-vous au numéro de l'instruction situé à la fin de chaque avertissement. CONSERVEZ CES INFORMATIONS
Warnung	WICHTIGE SICHERHEITSHINWEISE Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen führen kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen und den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden. BEWAHREN SIE DIESE HINWEISE GUT AUF.
Avvertenza	IMPORTANTI ISTRUZIONI SULLA SICUREZZA Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le traduzioni delle avvertenze riportate in questo documento. CONSERVARE QUESTE ISTRUZIONI
Advarsel	VIKTIGE SIKKERHETSINSTRUKSJONER Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade på person. Før du begynner å arbeide med noe av utstyret, må du være oppmerksom på farene forbundet med elektriske kretser, og kjenne til standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten av hver advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som fulgte med denne enheten. TA VARE PÅ DISSE INSTRUKSJONENE
Aviso	INSTRUÇÕES IMPORTANTES DE SEGURANÇA Este símbolo de aviso significa perigo. Você está em uma situação que poderá ser causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha conhecimento dos perigos envolvidos no manuseio de circuitos elétricos e familiarize-se com as práticas habituais de prevenção de acidentes. Utilize o número da instrução fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo. GUARDE ESTAS INSTRUÇÕES
¡Advertencia!	INSTRUCCIONES IMPORTANTES DE SEGURIDAD Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los procedimientos estándar de prevención de accidentes. Al final de cada advertencia encontrará el número que le ayudará a encontrar el texto traducido en el apartado de traducciones que acompaña a este dispositivo. GUARDE ESTAS INSTRUCCIONES
Varning!	VIKTIGA SÄKERHETSANVISNINGAR Denna varningssignal 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 vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna anordning. SPARA DESSA ANVISNINGAR
Aviso	INSTRUÇÕES IMPORTANTES DE SEGURANÇA Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham o dispositivo. GUARDE ESTAS INSTRUÇÕES
Advarsel	VIGTIGE SIKKERHEDSANVISNINGER Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de oversatte advarsler, der fulgte med denne enhed. GEM DISSE ANVISNINGER

Tools Required

The following tools and parts are required to remove and install the DC-input power supply:

•Small flat-blade or Phillips-head screwdriver.

•Wirestripper

•Source DC cables (cables should be sized by a local electrician)

Installing the Power Supply

To install the DC-input power supply, follow these steps:

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Step 1 Remove the power supply from the shipping packaging and discard the packaging.

Step 2 Verify that the new power supply has the correct airflow direction (front-to-back or back-to-front) for your situation. The power supply release lever (see Figure 1), is color-coded burgundy for front-to-back airflow or blue for back-to-front airflow.

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Note The chassis determines which airflow direction is correct by polling all of the fan assemblies and the power supplies. The airflow direction for all of the devices should be the same. If the airflow direction of the replacement power supply or the redundant power supply does not match the fan assemblies airflow direction, the system software shuts down the power supply and generates a power supply mismatch error message on the console.

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Step 3 Loosen the two captive installation screws on the power supply's source DC cable plug (see Figure 1), and remove the DC power plug from the power supply. (See Figure 2.)

Figure 2 Removing the DC Power Plug from the Power Supply

Step 4 Loosen the two cable retention screws on the top of the DC cable plug.

Step 5 Remove approximately 1/4-inch (6.5 mm) of insulation from the ends of the source DC cables.

Step 6 Insert the end of the positive (+) DC source DC cable into the plus (+) side of the plug and tighten the cable retention screw to secure the cable in the plug. (See Figure 3.)

Step 7 Insert the end of the negative (-) DC source cable into the negative (-) side of the plug and tighten the cable retention screw to secure the source DC cable in the plug.

Figure 3 Attaching the Source DC Cables to the DC Cable Plug

Step 8 If the chassis power supply bay is empty, proceed to Step 9. If you are replacing a power supply already installed in the chassis power supply bay, go to the "Removing the Power Supply" section. If the chassis power supply bay is empty, but has a power supply blank cover installed, follow the two substeps below to remove the blank cover (see Figure 4):

a. Grasp the two retaining clips with your thumb and forefinger and squeeze to unlatch the blank cover from the power supply bay.

b. While still squeezing the two clips, pull on them to remove the blank cover from the power supply bay.

Figure 4 Power Supply Blank Cover Removal

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Note If the redundant power supply bay on the Catalyst 4500-X series switch chassis is unused, you must be cover it with a power supply blank cover (part no. C4KX-PWR-BLANK=) to maintain proper airflow through the chassis.

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Step 9 Using two hands to support the new power supply, position it in front of the power supply bay and slide it into the bay.

Step 10 Firmly push on the power supply handle to fully seat the power supply in the bay. (See Figure 5.)

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Note The retaining clip will pivot in and then snap into place when the power supply is fully installed in the bay. You will hear a click as the power supply release lever snaps into place.

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Figure 5 Installing the DC-Input Power Supply

Step 11 Verify that all of the site power and grounding requirements have been met and the chassis is properly grounded.

Step 12 Verify that power is off to the DC circuit you are going to attach to the DC-input power supply. As an added precaution, place the appropriate safety flag and lockout devices at the source power circuit breaker, or place a piece of adhesive tape over the circuit breaker handle to prevent accidental power restoration while you are working on the circuit.

Step 13 Connect the DC cables to the source DC circuit breaker.

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Note The wire should be sized according to local and national installation requirements and electrical codes. Use only copper wire.

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Step 14 Insert the DC plug into the power supply connector and secure it in place by tightening the two captive installation screws. (See Figure 6.)

Figure 6 Installing the Power Plug into the DC-Input Power Supply

Step 15 Secure the source DC power cable to the power supply handle by looping the velcro cable strap around the source DC cable and cinching it snugly.

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Caution In a system with dual DC-input power supplies, connect each power supply to a separate power source. In case of a power source failure to one supply, the second power source should still be available.

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Step 16 Verify the following:

•The source DC cables are securely attached to the power supply plug with no bare wire exposed.

•The power supply plug is fully inserted into the power supply and the two captive installation screws are tight.

Step 17 Remove any safety flag and lockout devices or any tape from the source DC circuit breaker switch handle, and restore source DC power by moving the circuit breaker switch handle to the on (|) position.

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Note The DC-input power supply does not have an on/off switch. Restoring source DC power will energize the Catalyst 4500-X DC-input power supply and power up the chassis.

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Step 18 Verify power supply is operating correctly by monitoring the two LEDs on the power supply. The FAIL LED should be unlit and the OK LED should be lit green. Also verify that the appropriate front panel PS LED (either PS1 or PS2) is lit green.

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Removing the Power Supply

To remove the DC-input power supply from the chassis, follow these steps:

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Step 1 Verify that the source DC is off to the DC circuit that feeds the power supply that you are removing. As an added precaution, place the appropriate safety flag and lockout devices at the source DC power circuit breaker, or place a piece of adhesive tape over the circuit breaker handle to prevent accidental power restoration while you are working on the circuit.

Step 2 Loosen the velcro strap to free the source DC power cable.

Step 3 Loosen the two captive installation screws and disconnect the DC power plug from the power supply.

Step 4 Grasp the power supply handle with your forefinger and place your thumb on the power supply release handle. (See Figure 7.)

Step 5 Squeeze your forefinger and thumb together and pull on the power supply handle to disconnect the power supply from the chassis bay.

Figure 7 Removing the DC-Input Power Supply from the Chassis

Step 6 Slide the power supply out of the chassis bay.

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Note The power supply is approximately 12.5 inches (31.75 cm) long. Place your other hand underneath of the power supply to help support the power supply as you extract it from the chassis.

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Step 7 Set the removed power supply aside.

Step 8 If you are not going to replace the power supply, position a power supply blank cover (part no. C4KX-PWR-BLANK=) over the empty power supply bay opening and snap it into place. If you are going to install a new power supply in the chassis, see the "Installing the Power Supply" section for instructions.

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Power Supply Specifications

Table 2 lists the electrical specifications for the 750 W DC-input power supply.

Table 2 Electrical Specifications, 750 W DC-Input Power Supply

Specification	Description
DC-input voltage	North America: -48 VDC (nominal) (-40.5 VDC to -56 VDC) International: -60 VDC (nominal) (-55 VDC to -72 VDC)
DC-input current	25 A
Power supply output capacity	750 W
Power supply output	62 A @ 12 VDC 3 A @ 3.3 VDC
Output holdup time	16 ms minimum (20 ms @ 60% load)

Table 3 lists the physical specifications of a DC-input power supply (C4KX-PWR-750DC-R= or C4KX-PWR-750DC-F=).

Table 3 Dimensions and Weight for a DC-Input Power Supply

Specification	Description
DC-input power supply dimensions (H x W x D)	1.57 x 2.15 x 14.28 in (3.99 x 5.46 x 36.27 cm)
Weight	2 lb (0.91 kg)
Shipping box dimensions, spare power supply (H x W x D)	4.38 x 7.13 x 20.13 in (11.13 x 18.11 x 51.13 cm)
Shipping weight	3.7 lb (1.68 kg)

Related Documentation

Table 4 lists the documentation supporting the Catalyst 4500-X series switch that is available at http://www.cisco.com/

Table 4 Documentation Supporting the Catalyst 4500-X Series Switch 

Title	Description of Contents
Catalyst 4500-X Series Switch Installation Note	Contains instructions for rack-mounting the switch chassis.
Catalyst 4500-X 8-Port Network Uplink Module Installation Note	Contains instructions for installing and removing the optional 8-port network uplink module in the Catalyst 4500-X switch chassis.
Catalyst 4500-X AC-Input Power Supply Installation Note	Contains instructions for removing and installing the AC-input power supply in the Catalyst 4500-X switch chassis.
Catalyst 4500-X Fan Assembly Installation Note	Contains instructions for removing and installing a fan assembly in the Catalyst 4500-X switch chassis.
Regulatory Compliance and Safety Information for the Catalyst 4500-X Series Switch	Contains the regulatory compliance and safety information for the Catalyst 4500-X switch chassis. Also includes language translations of the warnings that appear in the other Catalyst 4500-X documentation.
Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, Release IOS XE 3.3.0SG(15.1(1)SG)	Contains instructions on how to configure the Catalyst 4500-X switch.
Catalyst 4500 Series Switch Cisco IOS Conmmand Reference, Release IOS XE 3.3.0SG(15.1(1)SG)	Contains descriptions of all of the software commands available that support the Catalyst 4500-X switch.
Release Notes for the Catalyst 4500 Series Switch, Release IOS XE 3.3.0SG(15.1(1)SG)	Contains the latest software caveats and workarounds related to the Catalyst 4500-X switch.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as an RSS feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service. Cisco currently supports RSS Version 2.0.

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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.

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