Table Of Contents
Catalyst 4000 Family Power Entry Module and External Power Shelf Installation Note
WS-X4095-PEM Power entry module
WS-P4603= External power shelf
WS-X4608= External power supply
This installation note describes how to install the Catalyst 4000 family power entry module (PEM) and external power shelf.
This document contains these sections:
Warning Before you install, operate, or service the system, read the Site Preparation and Safety Guide. This guide contains important safety information you should know before working with the system.
Installing the Power Entry Module
The Power Entry Module (PEM) (see Figure 1) allows you to connect the Catalyst 4006 switch to an external power supply. The PEM is installed on the front panel of the Catalyst 4006 switch chassis.
Figure 1 PEM
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Caution Ensure that the external power supply is disconnected from the power source before you install and connect it to the PEM.
Follow these steps to install a PEM in your Catalyst 4006 switch chassis:
Step 1 Using a screw driver, unscrew the two captive screws on the PEM panel.
Note Keep the PEM panel in the event you need to remove the PEM later.
Step 2 Carefully insert the PEM into the slot. Be careful that you align it properly so that the 14-pin connector on the rear of the PEM seats properly into the chassis. (See Figure 2.)
Figure 2 Inserting the PEM into the Slot
Step 3 Tighten the two captive installation screws on the PEM front panel, securing it to the Catalyst 4006 switch front panel.
Installing the External Power Shelf and Power Supplies
The external power supply (see Figure 3) allows you to operate voice-power enabled switching modules in the Catalyst 4006 switch chassis. The external power supply is a single-phase, AC-DC, 1050 watt, -52V output power supply. The external power supply is installed in an external power shelf (see Figure 4) that fits into a standard equipment rack. Up to three external power supplies can be installed in the external power shelf.
Figure 3 External Power Supply
Figure 4 External Power Shelf
Note To use an external power supply, you must first install a PEM. If you have not installed a PEM, see the "Installing the Power Entry Module" section for more information.
Rack-Mounting the External Power Shelf
Note Ensure that you install the external power shelf close enough to your Catalyst 4006 switch so that you can connect all power cords to the PEM and to the power outlet. We recommend that you install the external power shelf directly above your Catalyst 4006 switch or in a directly adjacent rack.
The external power supply is installed in the external power shelf. Follow these steps to install the external power shelf in an equipment rack:
Step 1 Align the mounting holes in the L brackets with the mounting holes in the equipment rack.
Step 2 Secure the external power shelf using four (two per side) 12-24 x 3/4-inch screws through the elongated holes in the L bracket and into the threaded holes in the mounting post. (See Figure 5.)
Figure 5 Installing the External Power Shelf in the Rack
Step 3 Use a tape measure and level to ensure that the external power shelf is installed straight and level.
Installing the External Power Supply
After you have installed an external power shelf in the equipment rack, you can install the external power supplies in the chassis. If you have not installed the external power shelf, see the "Rack-Mounting the External Power Shelf" section.
Follow these steps to install an external power supply:
Step 1 Ensure that the external power supply you are installing is not plugged in to a power outlet or the PEM.
Step 2 Loosen the screws on the attachment plates on the upper left and right corners of the external power supply so you can slide the attachment plates down. (See Figure 6.)
Figure 6 External Power Supply Attachment Plates
Step 3 Grasp the external power supply handle with one hand. Place your other hand underneath to support the bottom of the external power supply, as shown in Figure 7.
Figure 7 Handling an External Power Supply
Caution Use both hands to install and remove external power supplies.
Step 4 Slide the external power supply all the way into the external power shelf bay, aligning the attachment plates with the slots on the top of the external power shelf.
Step 5 Slide each attachment plate up so that the upper edge is wedged into the external power shelf slot and use a screwdriver to tighten the two screws on each attachment plate. (See Figure 8.)
Figure 8 Tightening the Attachment Plates
Step 6 Before you connect the external power supply to a power source, ensure that all site power and grounding requirements described in the Site Preparation and Safety Guide have been met.
Step 7 Plug the 2-pin Molex cord into the external power supply. (See Figure 9.)
Figure 9 Connecting the External Power Supply to the PEM
Step 8 Connect the other end of the 2-pin Molex cord to the PEM.
Note Up to three external power supplies can be connected to one PEM.
Step 9 Plug the IEC power cord into the external power supply. (See Figure 10.)
Figure 10 Connecting the Power Cord
Step 10 Connect the other end of the power cord to an AC-power input source.
Caution In a system with multiple external power supplies, connect each external power supply to a separate AC power source. In case of a power source failure, the second source will probably still be available and can maintain maximum overcurrent protection for each power connection.
Step 11 Verify external power supply operation by checking the power supply front panel LEDs:
•The LED labeled INPUT OK is lit.
•The LED labeled OUTPUT OK is lit.
Step 12 Check the external power supply and system status from the system console by entering the show system command. For more information on commands, refer to the Command Reference for your switch.
Step 13 If the LEDs or the show system command output indicate a power problem or other system problem, refer to the Catalyst 4003 and 4006 Switch Installation Guide for more information.
Standards Compliance Specifications
When installed in a system, the Catalyst 4000 family modules comply with the standards listed in Table 1.
Table 1 Standards Compliance Specifications
Item Specification Compliance
1 CE = European Compliance
2 UL = Underwriters Laboratory
3 CSA = Canadian Standards Association
4 EN = European Norm
5 IEC = International Electrotechnical Commission
6 TS = technical specifications
7 AS/NZS = Australia Standards/New Zealand Standards
8 EMC = electromagnetic compatibility
9 FCC = Federal Communications Commission
10 CFR = Code of Federal Regulations
11 ICES = Interference-Causing Equipment Standard
12 UTP = unshielded twisted-pair
13 VCCI = Voluntary Control Council for Information Technology Equipment
14 FTP = foil twisted-pair
For more detailed installation and configuration information, refer to the following:
•Site Preparation and Safety Guide
•Catalyst 4000 Family Installation Guide
•Catalyst 4000 Family Module Installation Guide
•Catalyst 4000 Family Supervisor Engines and Switching Modules Installation Note
•Regulatory Compliance and Safety Information for the Catalyst 4000 Family Switches
•Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, and Catalyst 2980G Switches
•Command Reference—Catalyst 4000 Family, Catalyst 2948G, and Catalyst 2980G Switches
•System Message Guide—Catalyst 6000 Family, Catalyst 5000 Family, Catalyst 4000 Family, Catalyst 2926G Series, Catalyst 2948G, and Catalyst 2980G Switches
•Layer 3 Services Software Configuration Guide—Catalyst 5000 Family, Catalyst 4000 Family, Catalyst 2926G Series, Catalyst 2948G, and Catalyst 2980G Switches
Translated Safety Warnings
This section translates to multiple languages the warnings in this installation note. These translated warnings can be used with other documents related to this document.
Faceplates and Cover Panel Requirement
Site Preparation and Safety Guide Warning
The following sections explain how to obtain documentation from Cisco Systems.
World Wide Web
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Translated documentation is available at the following URL:
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Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
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Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Inquiries to Cisco TAC are categorized according to the urgency of the issue:
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•Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
•Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:
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If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered, you can open a case online by using the TAC Case Open tool at the following URL:
If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.
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Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.