LAN Power Systems LP2521 Installation And User Manual

Power over Ethernet
Single Port Injector

Installation and User’s Guide

Notice to User

LAN Power Systems reserves the right to make changes in specifications
and other information contained in this document and it’s web site without
prior notice. The reader should in all cases consult LAN Power Systems to
determine whether any such changes have been made.

The hardware described in this document is subject to change without
notice due to market conditions or user requirements.

IN NO EVENT SHALL LPS BE LIABLE FOR ANY INCIDENTAL, INDIRECT,
SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER
(INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING OUT OF
OR RELATED TO THIS DOCUMENT, WEB SITE, OR THE INFORMATION
CONTAINED IN THEM, EVEN IF LPS HAS BEEN ADVISED OF, KNEW
OF, OR SHOULD HAVE KNOWN OF, THE POSSIBLITY OF SUCH
DAMAGES. TOTAL EXTENT OF PRODUCT WARRANTY IS
REPLACEMENT OF ANY PRODUCT DEEMED TO BE DEFECTIVE
WITHIN WARRANTY PERIOD.

LPS and any logos associated therewith, are trademarks or registered
trademarks of LPS and Trend Datacom USA, Inc. in the United States
and other Countries.

All other product names mentioned in this manual may be trademarks or
registered trademarks of their respective companies and are mentioned
here merely for clarification purposes regarding the installation and use
of LAN Power Systems products.

© 2007 LAN Power Systems and Trend Datacom USA, Inc. All rights reserved.
Revised - June 2009

I

Two Year Limited Warranty

LPS warrants to the original consumer or purchaser that each of its products,
and all components thereof, will be free from defects in material and/or
workmanship for a period of 2 years from the original purchase date. Any
warranty hereunder is extended only to the original consumer or purchaser
and is not assignable.

LPS makes no express or implied warranties including, but not limited to,
any implied warranty of merchantability or fitness for a particular purpose,
except as expressly set forth in this warranty. In no event shall LPS be
liable for incidental or consequential damages, costs, or expenses arising
out of or in connection with the performance of the product delivered
hereunder. LPS will in no case cover damages arising out of the product
being used in a negligent fashion or manner.

NOTE: LPS reserves the right to change specifications without notice.
Please contact LPS to confirm current specifications or to inquire about
any LPS claims arising from product defects. Written inquiries maybe
addressed to
whether its products will be repaired or replaced during the warranty period.

[email protected]. LPS reserves the right to determine

II

Table of Contents

Using This Guide

Purpose of Guide ....................................................................IV

Who Should Use this Guide ...................................................IV

If You need Help ...................................................................... V

1. Introduction

Functions and Features........................................................ 1-1

LED indicators and functions .............................................. 1-2

2. Installation and Connection

Verifying Contents of Package............................................. 2-1

Technical Considerations ..................................................... 2-2

Powering Up the Injector ...................................................... 2-3

Typical Installation of PoE Injector ...................................... 2-4

3. Troubleshooting

Checklist ................................................................................ 3-1

4. Hardware Specifications

Regulatory Compliance Standards...................................... 4-1

Safety Approvals ................................................................... 4-1

Physical / Environmental Specifications............................. 4-2

Electrical Specifications and Properties ............................. 4-3

III

Using This Guide

Purpose of Guide

This document provides information and procedures for the
product installation and operation of the LP2521 Single Port
Power over Ethernet Injector.

Who Should Use this Guide

This document is intended for technical personnel responsible
for installing and operating Power over Ethernet products in a
Local Area Network (LAN) environment.

To use this document effectively, you should have a working
knowledge of Local Area Networking (LAN) concepts and
hardware installation. In addition, you should be familiar with the
following:

 Connection of Patch Cables with RJ45 connectors

 LAN addressing map for your particular Network

 Mounting of Network hardware in a 19” equipment rack

 Local practices for power cord connections

IV

If You need Help

For additional support related to the contents of this document, pre­installation of product or post installation support, please contact LPS
using one of the following methods:

Phone [phone]

Fax [phone]

Email [email protected]

Web Address www.lan-power.com

Mail LAN Power Systems

47835 Westinghouse Drive
Fremont, CA 94539

Before contacting LPS for technical support, please have the
following information ready:

 Your LPS product model number and unit serial number

 A description of the failure or symptons of problem

 A description of any action(s) already taken to resolve the

problem (e.g., changing ports , rebooting the unit, etc...)

 The type of End device being powered including Manufacturer

name and part number

 Powering requirements of the End device

 A description of your Network environment (layout, Ethernet

switch description, cable type, etc...)

 The unit history (i.e., have you returned the unit before, is

this a recurring problem, etc...)

V

Introduction

Functions and Features

The LPS Model LP2521 Single Port Power over Ethernet (PoE)
Injector supports powering applications in which AC Power is

difficult or costly to access, such as VoIP Phones, Wireless LAN
Access Points, Internet Security Cameras, or other Network
devices.

The Single Port PoE Injector acts as a “patch panel” and adds
~48 VDC to unused (non-data) wires in a standard Category 5,
5e, or 6 Ethernet cable. The LP2521 delivers both data and
power over a single standard Ethernet cable to an End device
designed to receive both Data and Power through its RJ45
connector.

Key features of the Single Port PoE Injector include:

1

 Exceeds IEEE 802.3af Power over Ethernet Standards

 Supports Data links at 10Mbs, 100Mbs or 1000Mbs

 Output Wattage is up to 28W continuously

 Non-Conducting plastic case

 Over voltage current and Short circuit protected

1-1

Functions and Features continued



 Removable Power Cord w/IEC-320-C7 connector



 Data and Power carried on same Ethernet cable

 Ships with wall mounting bracket - use if needed

LED indicators and functions

The LP2521 PoE Injector has two LED’s which assist with
understanding unit operation.

 LED #1 - Unit Power - The LED glows GREEN if input

power is being received properly from AC outlet - This
indicates the unit is capable of forwarding power to the
End device.

 LED #2 - Connection to End device and Power

forwarding - The LED glows GREEN if detection is
achieved with the End device and power is being
forwarded out over the Ethernet cable.

See Section 3, Troubleshooting, if Ethernet and Power cords are
properly attached and if both LED’s are not on in a steady
GREEN condition.

1-2

Installation and Connection

Electrical Hazard: Only qualified personnel should install this
unit. Read instructions before attempting to install this unit.

Verifying Contents of Package

Unpack the PoE Injector and verify that you have all of the
following items:

 Single Port Power over Ethernet Injector

 Power Cord

2

 Wall Mounting bracket and screws

2-1

Technical Considerations

Before you mount the PoE Injector to a fixed location, consider all of the
following:

 Determine optimal placement, check patch cord routing

and AC outlet location.

 Collect and document Network information as required.

 Ensure the cable length from the Ethernet Network

Switch to the Powered End device does not exceed 100
meters total length.

Note: The PoE Injector is not a repeater and does not amplify
the Ethernet data signal. The Injector must be used in
conjunction with an Ethernet Switch.

Caution: Observe the following considerations when installing
the Single Port PoE Injector.

 Connect the Injector to a grounding type AC outlet (100-

240 VAC), using the standard power cord supplied.

 Allow for easy access to disconnect the unit from the AC

outlet or UPS, if necessary.

 Do not cover the unit or block airflow with any other

objects. Keep the unit away from excessive heat,
humidity, vibration and dust.

 Installation must at all times conform to local regulations

 There are no user serviceable parts inside the Injector.

If support is needed, refer to “If You need Help” on page V.

 SELV - Safety Extra Low Voltage (Connect only to PoE

Networks without routing to the ourside plant)

2-2

Powering Up the Injector

Plug one end of the power cord into the Injector and the other end into a
grounded AC power source. Units are typically connected to a power
strip or other power outlet that may be cycled on and off. An
uniterruptible power supply (UPS) may be used. This assures
uninterrupted power to the End device should there be a loss of building
power.

Safety Instructions: The means of connection to the mains supply is the
detachable power cord of the equipment. The equipment disconnect
device is the appliance inlet. The AC socket outlet shall be installed near
the equipment and shall be easily accessible.

Next, attach a LAN data cable patch cord of minimum Cat5 cable grade
from the Ethernet Switch port to the RJ45 connector on PoE Injector
marked “IN”. Then attach a second patch cable from the “OUT” RJ45
connector on the PoE Injector to the structured wiring connection leading
to the device to be powered. Turn on power source. The “IN” LED on
the Injector will glow “GREEN”. If End device to be powered is already
installed on Network, the “OUT” LED will glow “GREEN”. The PoE
Injector is now correctly installed and operating.

2-3

Typical Installation of PoE Injector

Datacom Wiring

Closet

Ethernet Switch

LP2521

Patch Panel

19” Equipment Rack

Grounded AC

Outlet

Power
Cords

UPS System

2-4

Typical Installation of PoE Injector (continued)

Ethernet Switch

IN

Category5(min)
Patch Cords

OUT

PoE Injector

LP2521

Structured Cabling

Connection to

End-Device

IP-Phone, Wireless AP,

IP Security Camera, etc...

Patch Panel

Power Cords
to UPS or
AC Outlet

2-5

Troubleshooting

Refer to the Troubleshooting Checklist for a list of problems and recom­mended actions to resolve the problem. If additional support is needed,
refer to “If You need Help” on page V.

Following the Troubleshooting procedures below will usually
resolve a Power over Ethernet Installation problem. The LAN
Power Support Team has found that these are the most often
encountered trouble items when adding Single Port PoE Injectors
to an existing Ethernet Network.

Troubleshooting Checklist:

Problem 1:

The Single Port PoE Injector is plugged in but “Power In” LED is not lit
(Green).

Recommended Actions:

Verify the power cord is plugged in all the way into the PoE Injector.

3

Verify the AC connection is “hot” by plugging in some other device and
making sure there is actually power at the outlet. Input voltage must be
from 90-264 VAC and 50-60Hz.

If the “Power In” LED will not light with the unit plugged in, call or write
to LAN Power Systems for Tech. Support.

Problem 2:

The Single Port PoE Injector is plugged in and “Power In” LED is lit
(Green). But the “Power Out” LED is not lit and End device is not being
powered.

Recommended Actions:

Verify use of working patch cables of at least Category 5 grade. Verify
they are Straight-through patch cables and NOT Cross-over cables.
Verify connection of good patch cable from Ethernet Switch port to “IN”
RJ-45 connection on PoE Injector. Verify connection of good patch
cable from “OUT” RJ-45 connection on PoE Injector to Patching panel
connection linking to End device to be powered.

-continued on next page-

3-1

Troubleshooting Checklist (continued)

IF “OUT” LED on PoE Injector is still not lit (Green), continue with these
steps.

Bring End device to be powered into the same room (wiring closet)
where you are working and connect it directly to the patch cable already
attached to “OUT” RJ-45 Connector on PoE Injector. If “OUT” LED lights
up (Green) and power light is now lit on the End device, the PoE Injector
is working fine.

The problem must be then in the Cable link going out to where the End
device was first located. PoE requires the use of all 8 wires in the LAN
Data cable. It is possible not all 8 wires are available or terminated in
that particular link in the Structured Cabling System. Try using a
different Cable link to a nearby or similar location and see if the PoE
Injector can now power the End device remotely using that Cable link.
OR the patch cord from the end of the Cable link to the End device
could be bad, try replacing with another known good patch cable.

If You have the End device to be powered connected locally to the PoE
Injector, with known good patch cords, and the “OUT” LED on the PoE
Injector does not light up and power the End device, check the
following. Verify that the Make and Model of End device you are trying
to power is actually made from the Manufacturer to accept PoE. If so,
verify that the style of PoE (protocol) that the End device wants to
receive is the same style that the PoE Injector is putting out.

Example: the LP2521 is putting out IEEE 802.3af PoE. The End device
must be built ready to accept IEEE 802.3af PoE. Some products in the
marketplace are not, some accept other PoE styles like legacy Cisco
CDP style PoE (see Support section, Compatible Products listing at
www.lan-power.com). Others need 24v or 12v or 5 volts input. LAN
Power Systems has Voltage Adapters and Power Pin and Data cables
available for these low voltage PoE applications (see Products section
of LAN Power Website at www.lan-power.com).

3-2

Troubleshooting Checklist (continued)

Problem 3:

PoE Injector has Input and Output LEDs both lit (Green), End device is
being powered, but End device has no Data link from the Ethernet
Switch (is not responding to the Network).

Recommended Actions:

Verify Ethernet Switch port is good, turned on, and not being blocked for
traffic forwarding by either a hard set or soft set in Network
Management Software.

Check or change out patch cord from Switch port to PoE Injector,
making sure a Straight-through patch cord is being used and NOT a
Crossover cable.

Verify Cable link to End device is at least Category 5 and has a distance
of no more than 100 meters total length, including patch cables. If a
Cable testing unit is available, wring out the data link to make sure there
are no hidden breaks or damage to any of the cable’s 8 wires and that
all RJ-45 connection points along the data link are good.

Try using a different End device. If the new End device works and the
Data link works correctly, the problem is with the End device. Speak with
that Manufacturer for Technical support or return of the problem End
device.

If these actions have all been taken and you still are not getting a
functional Power and Data link to your End device, please call or write
to LAN Power Systems for additional support and troubleshooting ideas.

3-3

Hardware Specifications

This appendix lists the LP2521 Single Port Power over Ethernet Injector
hardware and electrical specifications.

4

Regulatory Compliance Standards

This equipment meets the following electromagnetic
compatibility (EMC) requirements:

Electromagnetic
Compatibility (EMC)

Safety Approvals

The equipment meets the following safety approvals:

FCC CE

VCCI

VCCI 2001 ClassB,
47 CFR Parts 2 and 15,
EN55022, EN61000-3-2,
EN61000-3-3, EN61000-4-2,
EN61000-4-3, EN61000-4-4,
EN61000-4-5, EN61000-4-6,
EN61000-4-11

4-1

Hardware Specifications continued

Physical Specifications

Height: 1-3/8” (34.9mm)
Width: 2-3/16” (55.5mm)
Length: 5-1/16” (128.6mm)
Unit Weight: 5.1 oz. (0.15 kg)
Package Weight: 11.5 oz. (0.33 kg)
Unit Mounting: Shelf mount or wall mount with included bracket

LED Indicators

2 for Single PoE Output port
Left hand side(IN): Power available to forward (Green)
Right hand side(OUT): Detect and power forwarding (Green)

Environmental Specifications

Operating Temperature:40° to 185° F / -40° to 85° C
Storage Temperature: 40° to 185° F / -40° to 85° C
Relative Humidity: 10% to 90% non-condensing
Operating Altitude: -1,000 to 10,000 feet above Sea level

-305 to 3,048 meters above Sea level

Ethernet Data Throughput Speeds

10 Mbs Ethernet, 100 Mbs Fast Ethernet
or 1000 Mbs Gigabit Ethernet supported

Connector Type

Non-Shielded RJ-45, meets EIA 568A and 568B

4-2

Hardware Specifications continued

Electrical Specifications and Properties

AC Power Input

Power Cord type: Removable with IEC 320-C7 connector

on Single Port Injector end, North

American 2-Pin on outlet end
Power Supply: Single, Internal
Voltage Range: 90 - 264VAC
Voltage Rating: 100 - 240VAC
Frequency Range: 47 - 63Hz
Frequency Rating: 50 - 60Hz
Input Current: 1.0A (rms) Max.

@Voltage Range and Voltage Rating

DC Power Output

PoE Protocol: IEEE 802.3af Standard
Power on Data Pins: 4 & 5 (+), 7 & 8 (-) (unused pairs)
Output Voltage: 48VDC (+10%-0)
Max. Power on Port: 28W (exceeds PoE Standard)
Load: 0A (Min.) 0.35A (Max.)
Regulation (Line/Load): ± 4%

Efficiency: >75%
Hold-up Time: 20mS Min. @ 240VAC Input

Ripple and Noise* Vp-p*

<500Hz 0.50
500Hz-150KHz 0.15
150KHz-500KHz 0.15
500KHz-1MHz 0.10
* As per IEEE802.3af Table 33-5

Thermal Output 15 BTUs

4-3