3Com Ethernet Power Source Guide ® 3C10220 - 12-Port Ethernet Power Source 3C10222 - 24-Port Ethernet Power Source http://www.3com.
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CONTENTS ABOUT THIS GUIDE Conventions 5 Documentation Comments Year 2000 Compliance 6 3Com Support 7 1 6 3COM ETHERNET POWER SOURCE OVERVIEW Overview 10 Features 10 Front Panel Connections and LEDs 11 10/100BASE-TX Data Input Ports 11 10/100BASE-TX Data and Power Output Ports LEDs 12 Rear Panel Connections 14 Information Label 14 Console Port 14 DC Power Socket 15 AC Power Socket 15 Guidelines for Network Configuration 15 2 12 INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES Choosing a Suitable S
3 TROUBLESHOOTING Solving EPS Problems 27 Solving NBX Telephone Problems 30 Solving Wireless Access Point Problems A 32 SAFETY INFORMATION Important Safety Information 36 L’information de Sécurité Importante 37 Wichtige Sicherheitsinformationen 39 B TECHNICAL SPECIFICATIONS AND PIN ASSIGNMENTS 3COM CORPORATION LIMITED WARRANTY
ABOUT THIS GUIDE This guide provides all the information that you need to install and use either of the Ethernet Power Source (EPS) units: ■ 3C10220 — with 12 10BASE-T/100BASE-TX ports ■ 3C10222 — with 24 10BASE-T/100BASE-TX ports The guide is intended for use by installers or network administrators who are responsible for installing and setting up network equipment. It assumes a basic working knowledge of LANs. Conventions Table 1 and Table 2 list conventions that are used throughout this guide.
ABOUT THIS GUIDE Table 2 Text Conventions Convention Description Screen displays This typeface represents information as it appears on the screen. Commands The word “command” means that you must enter the command exactly as shown and then press Return or Enter. Commands appear in bold. The words “enter” and “type” When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.
3Com Support 3Com Support For information about these topics: ■ Product Troubleshooting ■ Software Downloads ■ Documentation ■ 3Com Service use your web browser to access this web site: http://support.3com.com/ and look for Network Telephony Products.
ABOUT THIS GUIDE
1 3COM ETHERNET POWER SOURCE OVERVIEW The 3Com Ethernet Power Source (EPS) provides power, over existing Ethernet wiring, to devices such as NBX telephones and 3Com wireless access points. The EPS can determine whether an Ethernet device can accept power over the Ethernet cable, and supply power only to those devices capable of accepting it.
CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW Overview The power source is designed for use with a standard 10BASE-T/100BASE-TX Ethernet network over standard TIA/EIA-568, Category 5 cable. The DC operating power for the data terminal units is fed through the unused pairs (7/8) and (4/5).
Front Panel Connections and LEDs Front Panel Connections and LEDs 11 Figure 1 and Figure 2 show the front-panel details of the 24-port and 12-port EPS units. The LEDs are described in later in this section. Figure 1 24-Port Ethernet Power Source — Front View Note: Bottom row connectors are input ports (data only). Top row connectors are output ports (data and power). Figure 2 12-Port Ethernet Power Source — Front View Note: Bottom row connectors are input ports (data only).
CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW 10/100BASE-TX Data and Power Output Ports The EPS output ports (top row) carry two kinds of transmissions: ■ Ethernet data on the standard two wire pairs on an RJ-45 connector (Transmit on pins 1 and 2; Receive on pins 3 and 6) and ■ DC power on the previously unused wire pairs of the RJ-45 connector (-24VDC Return on pins 4 and 5 and -24VDC on pins 7 and 8) The maximum segment length from the switch or hub to the Network Interface Card (NIC), includi
Front Panel Connections and LEDs 13 Table 3 LED Behavior (continued) Per-port Status Indications Unit Power Status Indications AC LED DC LED Off Off ■ No AC power supply is plugged into the AC inlet and no redundant DC power supply is connected. or On Off ■ An AC power supply fault has occurred and no redundant DC power supply is connected. ■ An AC power supply is plugged into the AC inlet and no redundant DC power supply is connected.
CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW Rear Panel Connections Figure 3 shows the EPS rear panel. Figure 3 Ethernet Power Source — Rear Panel CONSOLE PORT 9600, 8, 1, N DC INPUTS: 24Vdc/16Amp max. ONLY FOR USE WITH SPECIFIED POWER SUPPLY. REFER TO INSTRUCTIONS MANUAL. Power Source Unit P/N .................. S/N .................. Information Label Console Port SUPPLY DATA V~ Hz 100-120/200-240 60/50 A 3/1.5 Caution: Shock Potential. Disconnect the Power Before Servicing.
Guidelines for Network Configuration DC Power Socket 15 The EPS has a 12-pin DC power socket for use only with an optional –24 VDC uninterruptible power supply (UPS). See the documentation that comes with your UPS. The EPS normally draws power from its internal power supplies. If an external DC supply is connected, an electronic circuit in the EPS draws power from either the internal or external supply to ensure steady power delivery to the devices attached to the EPS output ports.
CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW Figure 4 Sample EPS Topology with the NBX 100 Communications System NBX 100 Switch or Hub 3Com Ethernet Power Source Wiring Closet Patch Panel Premises Cabling Wall Jack
Guidelines for Network Configuration Figure 5 Sample Network Topology with a 3Com Wireless Access Point Servers Switch or Hub 3Com Ethernet Power Source 3Com Wireless Access Point Premises Cabling Laptop with Wireless PCM Card Wiring Closet Patch Panel 17
CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW
2 INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES This chapter contains the information that you need to install and set up the Ethernet Power Source (EPS) and end devices. The following topics are described: ■ Choosing a Suitable Site ■ Rack-mounting the EPS ■ Power-up Sequence ■ Selecting the Correct Cables ■ Power Splitter Cable ■ Connecting an NBX Business Telephone ■ Connecting a 3Com Wireless Access Point WARNING: Safety Information.
CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES Choosing a Suitable Site The EPS is suitable for an office environment. It can either be rack-mounted in a standard 19-inch equipment rack (for example, in a wiring closet or equipment room) or placed free-standing on a desk, table, or counter. Both the 12-port and 24-port EPS packages (3C10220 and 3C10222 respectively) contain a rack-mounting kit with two mounting brackets and six screws.
Rack-mounting the EPS Rack-mounting the EPS 21 The EPS is 1.5U high (1 U equals 3.8 cm (1.5 inches)) and fits in most standard 19-inch equipment racks. CAUTIONS: ■ Before you connect the brackets or mount the unit in the rack, disconnect all cables and power from the EPS. ■ Verify that no self-adhesive pads are attached to the underside of the unit. 1 Place the EPS upright on a hard, flat surface with the front facing you.
CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES Power-up Sequence Adding Power The following sections describe how to add power to your EPS and prepare it for operation. To add power to the EPS, follow these steps. CAUTION: The EPS has no On/Off switch; the only way to connect or disconnect the power is to insert or remove the power cord from the unit. 1 Insert the power cord that comes with the unit into the power socket on the rear panel of the EPS.
Selecting the Correct Cables Figure 7 Connecting Other Devices to the Power Source Unit 1 2 3 4 5 6 7 8 RJ-IN data data data spare spare data spare spare o e ub RJ-OUT 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 DTE/Splitter data data data DC + data DC - 1 2 3 4 5 6 7 8 RJ45 RJ45 Switch/Hub Table 4 and Table 5 list the RJ45 input and output plugs (per port) Table 4 RJ-45 Input Plug (per Port): Switch Side Pin # Label Description 1 TX + Tx data signal to switch or hub 2 TX – Tx data signal to switc
CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES Power Splitter Cable The power splitter cable has a single RJ45 female connector on one end. All eight pins on this connector are connected, either to the power or to data. On the other end, the cable is split into two portions. The power plug carries the –24VDC (and returns) from pins 4, 5, 7, and 8. The RJ45 carries the data signals (transmit and receive) on pins 1, 2, 3, and 6.
Connecting a 3Com Wireless Access Point 25 4 After you make the final connection, check the LCD display on the telephone. Information appears when the telephone attempts to download information from the NBX system. If you see nothing in the LCD display, see “Solving NBX Telephone Problems” in Chapter 3. Connecting a 3Com Wireless Access Point Figure 9 shows how to connect a 3Com Wireless Access Point. You do not need a power splitter for this end device.
CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES When the connection is complete between the EPS and the 3Com Wireless Access Point, verify that: ■ The power LED continues to flash until the Wireless Access Point completes the bootstrap sequence. ■ The Power LED then stays illuminated. If there is a connection to the Ethernet, the Ethernet status LED flashes. If the Wireless Access Point LEDs do not light, refer to “Solving Wireless Access Point Problems” in Chapter 3.
3 Solving EPS Problems TROUBLESHOOTING If the LEDs on the EPS indicate a problem, see Table 6 for some suggested solutions. Table 6 Solving EPS Problems Problem Possible Cause A Power LED does not Loose AC power light, and you have NO cable external DC voltage supply. Suggested Action ■ Verify that the power cable is firmly connected to the EPS. ■ Verify that the other end of the power cable is firmly connected to the supply outlet.
CHAPTER 3: TROUBLESHOOTING Table 6 Solving EPS Problems (continued) Problem Possible Cause Suggested Action A Power LED does not light, and you have both AC power and an external DC voltage supply. Both AC power and DC power supplies are faulty. ■ Disconnect the DC power supply, and use the procedures outlined earlier in this table to check for problems with the AC supply. ■ If there are no AC supply problems, disconnect AC power and connect the DC supply.
Solving EPS Problems 29 Table 6 Solving EPS Problems (continued) Problem Possible Cause Suggested Action The device was connected too soon after being disconnected. ■ If the cables do not appear to be a problem, and pins 4, 5, 7, and 8 are not grounded, the end device may have been plugged in too soon after being unplugged, which can result in the device appearing to the EPS as a nonpowered device. Unplug the device cable from the EPS port, wait for 15 seconds, and then plug it back in.
CHAPTER 3: TROUBLESHOOTING Solving NBX Telephone Problems If power is not reaching an NBX Business Telephone, use the information in Table 7 to resolve the problem. Table 7 Solving NBX Business Telephone Problems Problem Possible Cause No characters appear in Faulty connection the telephone LCD display. The telephone may be faulty. Suggested Action ■ Verify all physical connections. ■ Supply power to the telephone using the standard external adapter that comes with the telephone.
Solving NBX Telephone Problems 31 Table 7 Solving NBX Business Telephone Problems (continued) Problem Possible Cause Suggested Action Faulty EPS ■ Follow the procedures described in Table 6 to determine if the EPS is faulty. ■ Check all connections between the telephone and the NBX chassis (patch cables, premises wiring, hubs, and switches) The NBX NCP is not operating properly. ■ Check other telephones. If they are working properly, the NCP is functioning properly.
CHAPTER 3: TROUBLESHOOTING Solving Wireless Access Point Problems If power is not reaching a Wireless Access Point, use the information in Table 8 to resolve the problem. Table 8 Solving Wireless Access Point Problems Problem Possible Cause Suggested Action No power to the Wireless Access Point Faulty physical connection ■ Verify all physical connections between the Wireless Access Point and the EPS. The Wireless Access Point may be faulty.
Solving Wireless Access Point Problems 33 Table 8 Solving Wireless Access Point Problems (continued) Problem Possible Cause Suggested Action Faulty EPS ■ Follow the procedures described in Table 6 to determine if the EPS is faulty. ■ Check all physical connections between the Wireless Access Point and the LAN (network). Check patch panels, premises wiring, hubs, and switches.
CHAPTER 3: TROUBLESHOOTING
A SAFETY INFORMATION Carefully read and follow this safety information before you install or remove any components or perform any maintenance procedures on the Ethernet Power Source (EPS). WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit.
APPENDIX A: SAFETY INFORMATION Important Safety Information ■ Installation and removal of the EPS must be carried out by qualified personnel only. ■ Always connect the EPS to an earth (ground) connection when you connect it to an AC outlet (power supply). ■ To comply with European safety standards, the EPS must always be connected to an earthed (grounded) outlet. ■ The power cord set must be approved for the country in which it is used, as indicated in Table 9.
L’information de Sécurité Importante ■ 37 France and Peru only: – This unit cannot be powered from IT (impédance à la terre) supplies. If your supplies are of IT type, this unit must be powered by 230V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection point labelled Neutral, connected directly to earth (ground). ■ U.K. only: – The EPS is covered by Oftel General Approval, S/G/12345/J/100003, for indirect connection to a public telecommunications system.
APPENDIX A: SAFETY INFORMATION que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. ■ Cordon électrique — Il doit être agréé dans le pays d'utilisation: Table 10 Sécurité Importante Etats-Unis et Canada ■ Le cordon doit avoir reçu l'homologation des UL et un certificat de la CSA.
Wichtige Sicherheitsinformationen Wichtige Sicherheitsinformationen 39 ■ Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. ■ Wenn die Ethernet Power Source (EPS) Einheit in einer Stapel mit anderen SuperStack II Hub Einheiten eingebaut werden soll, muß die EPS Einheit unter die schmaleren Hub Einheiten eingebaut werden. ■ Das Gerät ist unter keinen umständen an einen Wechselstrom (A.C.) Netzstecker anzuschließen ohne erdungsleitung.
APPENDIX A: SAFETY INFORMATION
B TECHNICAL SPECIFICATIONS AND PIN ASSIGNMENTS Table 11 Technical Specifications for the Ethernet Power Source Physical Dimensions Height: 76 mm (3.0 in.) x Width: 483 mm (19.0 in.) x Depth: 300 mm (12.0 in.) Weight: 5kg (10.8lbs) Environmental Requirements Operating Temperature 0° to 50°C (32° to 122°F) Storage Temperature 10° to +70°C (14° to 158°F) Operating Humidity 10 to 95% relative humidity, noncondensing Standards EN60068 (IEC68) Safety Agency Certifications UL 1950, EN60950, CSA 22.
APPENDIX B: TECHNICAL SPECIFICATIONS AND PIN ASSIGNMENTS Pin assignments are the same for the 10BASE-T and 100BASE-TX RJ45 connectors.
3Com Corporation LIMITED WARRANTY 3COM ETHERNET POWER SOURCE 12-PORT UNIT (3C10220) AND 24-PORT UNIT (3C10222) HARDWARE 3Com warrants this hardware product to be free from defects in workmanship and materials, under normal use and service, for the following length of time from the date of purchase from 3Com or its authorized reseller: Lifetime 3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the defective product or part, deliver to Customer an equivalent
WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER'S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S OPTION.
