3COM 3CNJPSE24 User Manual

Ethernet Power Supply
3CNJPSE24
User s Guide
3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 U.S.A.
Copyright ' 2001 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of˚merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at˚any time. If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy,
please contact 3Com and a copy will be provided to you
.
UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as Commercial Computer Software as defined in DFARS 252.227-7014 (June 1995) or as˚a˚ commercial item as defined in FAR˚2.101(a) and as such is provided with only such rights as are provided in˚3Com s standard commercial license for the software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov˚1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this user guide.
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.
3Com is a registered trademark and the 3Com logo is a trademark of 3Com˚Corporation. All other company and product names may be trademarks of the respective companies with which they are associated.
Contents
About this Guide ...........................................................................................i
Purpose .......................................................................................................i
Prerequisite Skills and Knowledge.............................................................i
Technical Support ...................................................................................... ii
Introduction to the Ethernet Power Supply ......................................... 1-1
About the Ethernet Power Supply ......................................................... 1-1
Power Management System ................................................................. 1-2
Ethernet Power Supply Front View Detail ........................................ 1-3
Ethernet Power Supply Rear View Detail ......................................... 1-7
Installing the Ethernet Power Supply ................................................... 2-1
Verifying Kit Contents ............................................................................ 2-1
Recording Identification Information...................................................... 2-1
Powering Up........................................................................................... 2-2
Connecting Cables to the Ethernet Power Supply ............................... 2-3
Safety Information ...................................................................................A-1
Technical Specifications.........................................................................B-1
Overview................................................................................................. B-1
Hardware Specifications ........................................................................B-1
Physical Specifications....................................................................... B-1
Environmental Specifications............................................................. B-1
Electrical Specifications .........................................................................B-2
Ethernet Interface...............................................................................B-2
Troubleshooting.......................................................................................C-1
Introduction.............................................................................................C-1
Troubleshooting Table ...........................................................................C-2
About This Guide
About this Guide
Purpose
This guide provides information and procedures on hardware installation, setup, configuration, and management of the Ethernet Power Supply.
Prerequisite Skills and Knowledge
The guide is intended for use by network administrators who are responsible for installing and setting up network equipment; consequently, a basic working knowledge of LANs (Local Area Networks) has been assumed.
To use this guide effectively, you should have a working knowledge of Ethernet infrastructures. In addition, you should:
Have a working knowledge of basic electronics and
mechanical assembly as well as an understanding of related local building codes.
Be familiar with local operating and troubleshooting
procedures.
Ethernet Power Supply User s Guide i
Technical Support
Technical Support
3Com provides easy access to technical support information through a variety of services. This section describes these services.
Information contained in this section is correct at time of publication. For the most recent information, 3Com recommends that you access the 3Com Corporation World Wide Web site.
One-Year Free Installation Support
3Com provides free installation and troubleshooting telephone support for this product for 90 (ninety) days from the date of purchase.
Hours of operation are subject to change. See Support from 3Com later in this section.
Online Technical Services
3Com offers worldwide product support 24 hours a day, 7˚days a week, through the following online systems:
World Wide Web site
3Com Knowledgebase Web Services
3Com FTP site
World Wide Web Site
To access the latest networking information on the 3Com Corporation World Wide Web site, enter this URL into your Internet browser: http://www.3com.com/
This service provides access to online support information, such as technical documentation and a software library, as well as support options that range from technical education to maintenance and professional services.
ii Ethernet Power Supply User s Guide
About This Guide
Knowledgebase Web Services
This interactive tool contains technical product information compiled by 3Com expert technical engineers around the˚globe.˚Located on the World Wide Web at http:// knowledgebase.3com.com, this service gives all 3Com customers and partners complementary, around-the-clock access˚to technical information on most 3Com products.
3Com FTP Site
Download drivers, patches, software, and MIBs across the Internet from the 3Com public FTP site. This service is available 24 hours a day, 7 days a week.
To connect to the 3Com FTP site, enter the following information into your FTP client:
Host name: ftp.3com.com
User name: anonymous
Password: <your Internet e-mail address>
NOTE: You do not need a user name and password with Web browser software, such as Netscape Navigator and Microsoft Internet Explorer.
Support from Your Network Supplier
If you require additional assistance, consult your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.
When you contact your network supplier for assistance, have the following information ready:
Product model name, part number, and serial number
A list of system hardware and software, including revision
levels
Diagnostic error messages
Details about recent configuration changes, if applicable
If you are unable to consult your network supplier, see the following section on how to contact 3Com.
Ethernet Power Supply User s Guide iii
Technical Support
Support from 3Com
If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier, 3Com offers technical telephone support services. To find out more about your support options, call the 3Com technical telephone support phone number:
1 800 527 8677
When you contact 3Com for assistance, have the following information ready:
Product model name, part number, and serial number
A list of system hardware and software, including revision
levels
Diagnostic error messages
Details about recent configuration changes, if applicable
Returning Products for Repair
Before you send a product directly to 3Com for repair, you must first obtain an authorization number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender s expense. To obtain an authorization number, call:
1 800 527 8677
iv Ethernet Power Supply User s Guide
Introduction to the Ethernet Power Supply
Introduction to the Ethernet Power Supply
1
This chapter contains introductory information about the Ethernet Power Supply and how it can be used in your network. It covers the following topics:
- About the Ethernet Power Supply
- Ethernet Power Supply Front View Detail
- Ethernet Power Supply Rear View Detail
- Network Configuration Examples
About the Ethernet Power Supply
The Ethernet Power Supply is a 24-port Ethernet-channel, 48V­power-feeding device. This device is designed for use with a 10/100BASE-TX standard Ethernet network over a standard TIA/EIA-568 Category 5 cabling plant. The DC operating power for the data terminal units is fed through the unused pairs (7/8 and 4/5).
The Ethernet Power Supply normally powers devices that are enabled for Power Over LAN or are equipped to receive power over Ethernet. These devices are called Powered Data Terminal Equipment (PDTE). Devices that are not equipped to receive power over Ethernet require local power or an external splitter to be powered by the Ethernet Power Supply.
NOTE: The Ethernet Power Supply is not a data hub or switch; it is a power distribution device to be used in conjunction with a data hub or switch. The Ethernet Power Supply adds power to unused wires and passes through data from the ports on an Ethernet or Fast Ethernet hub or switch using standard 8-wire, category 5 cables. Do not use crossover cables.
Ethernet Power Supply User s Guide 1-1
Introduction to the Ethernet Power Supply
Ethernet Power Supply main features:
- Remote power feeding of Ethernet terminals
- No need for terminal s AC outlets, UPS and AC/DC
adapters
- 24 10/100BASE-TX data plus power-combined channels
- Universal 100-240VAC, 50/60Hz power input
- Power management system
- Independent overload and short-circuit protection for each
channel
- Port status indications
- Standard 19 1U rack mountable
Power Management System
The total power required by PDTEs may exceed the total power available from the Ethernet Power Supply. The Power Management System does not allow the total power output to exceed the maximum power available (200W). When the total power available is near maximum, attempts to connect an additional PDTE to an empty port causes the appropriate LED of the port to blink orange, indicating out-of-power budget and this port does not deliver power. Power distribution is based on
first-come, first-served logic. Disconnection of other PDTEs or dropping the power use down on connected PDTEs so that the maximum power allowed for a single port is again available allows the connection of the new port automatically.
Should connected and operating PDTEs suddenly raise their power requirements significantly during operation, such that the power required exceeds the power available, the Ethernet Power Supply begins to turn off ports starting from port 24 down until the power is again inside the limit available. These ports resume operation when power is again available.
1-2 Ethernet Power Supply User s Guide
Introduction to the Ethernet Power Supply
Ethernet Power Supply Front View Detail
Figure 1 Ethernet Power Supply Front View
10/100BASE-TX Data & Power Output Ports, Upper 24 Ports
The Ethernet Power Supply has 24 Data & Power ports configured as Media Dependent Interface (MDI) non-crossover. These ports are designed to carry Ethernet data over the standard 2-wire pairs (RJ-45 pins 1/2 and 3/6) and DC power source over the spare wire pair (RJ-45 pins 4/5 and 7/8).
10/100BASE-TX Data Input Ports, Lower 24 Ports
The Ethernet Power Supply has 24 10BASE-T/100BASE-TX­data input ports, configured as MDI non-crossover. These ports are designed to carry Ethernet Data only (TX/RX) over the standard 2-wire pairs (RJ-45 pins 1/2 and 3/6).
According to the IEEE 802.3 standard, the maximum allowable distance between two Ethernet links is 100m (328ft). The Ethernet Power Supply meets this IEEE 802.3 requirement.
Ethernet Power Supply User s Guide 1-3
Introduction to the Ethernet Power Supply
LEDS
The LEDs in the unit indicate status of the Ethernet Power Supply and its ports.
A main power LED on the front panel, marked by AC, provides the Ethernet Power Supply status. The "AC" LED illuminating green indicates that the Ethernet Power Supply is connected to an AC outlet. The AC LED illuminating orange indicates an internal fault. See tables 2 and 3.
One bi-color LED (green and orange) per port provides port status. The green color indicates that the terminal unit has been identified as "Power Over LAN enabled" and is active and receiving power.
The orange LED indicates the port is not supplying power and is not active. See Table 1 for additional information.
NOTE: In the event that an Ethernet device that is not Power Over LAN enabled is connected to the Ethernet Power Supply (indicated by the orange color or off), the Ethernet device is unaffected because power is not being supplied.
1-4 Ethernet Power Supply User s Guide
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