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PD-6548
Power over Ethernet Solutions 2 Cat. No.: 06-6860-056
PD-6548
Notice
The information contained herein is believed to be accurate and reliable at the time of
printing. However, due to ongoing product improvements and revisions, PowerDsine
cannot accept responsibility for inadvertent errors, inaccuracies, subsequent changes or
omissions of printed material.
PowerDsine Ltd. reserves the right to make changes to products and to their specifications
as described in this document, at any time, without prior notice. This material may not be
photocopied or reproduced without permission.
Disclaimer
PowerDsine assumes no responsibility or liability arising from the use of Midspans, as
described herein, nor does it convey any license under its patent rights or the rights of
others. Applications that are described herein for any of theses products are for illustrative
purposes only. PowerDsine makes no representation or warranty that such applications will
be suitable for the specified use without further testing or modification.
TM
Note that the Midspan is designed for indoor use only!
© 2005 PowerDsine Ltd.
All rights reserved.
This document is subject to change without notice.
Acknowledgements
All other products or trademarks are property of their respective owners.
The product described by this manual is a licensed product of PowerDsine.
Covered under U.S patent 6,473,608 and equivalent worldwide
Additional patents pending
Power over Ethernet Solutions 3 Cat. No.: 06-6860-056
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Contents
A
BBREVIATIONS.......................................................................................7
1 SAFETY INFORMATION ........................................................................8
1.1 General Guidelines...............................................................................8
1.2 Power Cord ..........................................................................................9
2 ABOUT THE POWER OVER ETHERNET MIDSPAN..................................... 10
2.1 Power Management...........................................................................10
2.2 10/100BASE-TX Ports Definition .......................................................11
2.2.1 Data Input Ports ..........................................................................11
2.2.2 Data & Power Output Ports.........................................................11
2.3 Indicators............................................................................................12
2.3.1 Primary Power Indicators............................................................12
2.3.2 Port Indicators.............................................................................12
2.4 Connectors.........................................................................................14
3 INSTALLING THE POWER OVER ETHERNET MIDSPAN...............................17
3.1 Background........................................................................................17
3.2 Rack Mounting Brackets ....................................................................18
3.3 Routing the Input Ports Cables..........................................................19
3.4 Assembling Midspan to Rack.............................................................21
3.5 Connecting Data Cables ....................................................................22
3.6 Connecting Power Cables..................................................................22
3.7 Powering up .......................................................................................22
3.8 Troubleshooting..................................................................................23
3.8.1 Preliminary Steps........................................................................23
3.8.2 Troubleshooting Guide................................................................23
3.9 Technical Specifications.....................................................................25
3.9.1 Physical Specifications................................................................25
4 REMOTE WEB MANAGEMENT.............................................................26
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List of Figures
Figure 2-1: Power over Ethernet Midspan, Front View (PD-6548)......... 11
Figure 2-2: Connecting to the Midspan................................................... 16
Figure 3-1: Typical Installation................................................................ 17
Figure 3-2: Cable Connections............................................................... 20
Figure 4-1: Management Deployment.................................................... 26
List of Tables
Table 2-1: Power Status Indications....................................................... 13
Table 2-2: Port Status Indications........................................................... 13
Table 2-3: Console Cable D-type Connector.......................................... 15
Table 2-4: Rear Panel RJ45 Input Plug (Per Channel) .......................... 15
Table 2-5: Front Panel RJ45 Output Plug (per channel)........................ 16
Table 3-1: Troubleshooting Steps........................................................... 23
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Model Numbers Definition
PD-6548/AC/M
Where: M if present, indicates that the Midspan includes the Web
Management (EMS) feature (refer to Section 4).
Verifying Kit Contents
Unpack the kit and verify that the following items are uncluded:
• The Power over Ethernet Midspan
• Communication cable (for console connection to RS232)
• User Guide
• Power cord
• Brackets & plates installation kit
Before proceeding, record the unit’s serial number below for future
reference. The serial number can be found on the label at the rear
of the Power over Ethernet Midspan.
Serial Number
Electrical Compatibility Approvals
The PD-6548 complies with the following standards:
• FCC Part 15, Class B, with FTP cabling; Class A with UTP cabling
• EN 55022 (CISPR 22), Class B with FTP cabling; Class A with UTP cabling
• EN 55024 (CISPR 24)
• Canadian ICES-003, Class B
• VCCI
Safety Standard Approvals
The PD-6548 meets the following safety standards:
• UL/cUL per EN60950
• GS mark per EN60950
CE Marking
The CE marking on this product indicates that this product is in
compliance with 89/336/EEC (EMC Directive) and 73/23/EEC
(Low Voltage Directive).
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Abbreviations
PD – Powered Device
SELV - Safety Extra Low Voltage
DTE – Data Terminal Equipment
EMS - Element Management System
UTP – Unshielded Twisted Pair
FTP – Foiled Twisted Pair
DHCP – Dynamic Host Configuration Protocol
SNMP – Simple Network Management Protocol
GUI – Graphic User Interface
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1 Safety Information
1.1 General Guidelines
Read the following safety information before carrying out any installation,
removal or any maintenance procedure on the Power over Ethernet Midspan.
Warnings contain instructions that must be followed for personal and product
safety. Follow all instructions carefully.
WARNINGS
• Read the Installation Instructions in Section 3 before connecting
• A grounded power cord must be utilized with the Midspan as
• This product relies on the building installation for short-circuit
• Do not perform any work on the unit or connect/disconnect
• A voltage mismatch can damage the equipment and may pose a
• For shelf-mounted equipment, be certain that the surface is
• Ultimate disposal of this product should be handled according to
• The Power over Ethernet Midspan "Data" and "Data + Power"
a
the Power over Ethernet Midspan to its power source.
defined in paragraph 1.2.
(overcurrent) protection. Ensure that a fuse or circuit breaker no
larger than 15 A for 120 VAC, (U.S.) 10 A for 230 VAC
(international) is utilized.
cables during periods of lightning activity.
fire hazard. If the voltage indicated on the label is different from
the power outlet voltage, do not connect the Power over Ethernet
Midspan to this outlet.
stable and strong enough to support the equipment. Do not stack
more than two of the Power over Ethernet Midspans on a single
shelf.
all local laws and regulations.
ports are shielded RJ-45 data sockets. They cannot be used as
Plain Old Telephone Service (POTS) telephone sockets. Only
RJ-45 data connectors may be connected to these sockets.
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1.2 Power Cord
In the event that the power cord is replaced, the replacement must meet local
requirements.
• For reliable connection to an AC MAINS SUPPLY, equipment provides
an appliance IEC60320 inlet for connection of a detachable power
supply cord.
• The power socket outlet must be located near the Midspan and be
easily accessible. The only way to remove power from the unit is by
disconnecting the power cord from the outlet
• This unit operates under SELV (Safety Extra Low Voltage) conditions
according to EN60950/IEC 950. The conditions are only maintained if
the equipment to which it is connected, also operates under SELV
conditions.
U.S.A. and
Canada
Denmark
Switzerland
France and
Peru
U.K
The cord must be UL-approved or CSA certified.
The minimum specification for the flexible cord is:
No. 18 AWG
Type SV or SJ
Three-conductor.
The cord set must have a rated current capacity of at least
10 A.
The attachment plug must be an earth-grounding type with a
NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V)
configuration.
The supply plug must comply with section 107-2-D1,
standard DK2-1a or DK2-5a.
The supply plug must comply with SEV/ASE 1011.
This unit cannot be powered from IT supplies. If your
supplies are of the IT type, this unit must be powered by 230
V (2P+T), via an isolation transformer with a 1:1 ratio and
with the secondary connection point labeled Neutral,
connected directly to ground
The Power over Ethernet Midspan is covered by
General Approval, NS/G/12345/J/100003, for indirect
connection to a public telecommunications system
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2 About the Power over Ethernet
Midspan
PowerDsine’s Midspans family, injects DC power over data-carrying Ethernet
cabling. The PD-6548 Midspan, supports 48 ports in a 10/100BaseTx Ethernet
network, over TIA/EIA-568 Category 5/5e/6 cabling. DC operating power, for
data terminal units, is fed over the unused pairs of the cabling (7/8 and 4/5).
The Midspan powers devices that are Power over Ethernet enabled, or are
equipped to receive power over Ethernet. These devices are called Powered
Devices (PDs). Devices that are not equipped to receive power over Ethernet,
may require an external power adapter in order to be powered. Contact
PowerDsine for such an adapter.
The Power over Ethernet Midspan main features are as follows:
Remote power feeding over standard Ethernet ports
Eliminates the need for AC outlets, local UPS & AC/DC adapters
near PDs
Universal range power input (100-240 VAC, 50/60 Hz)
Power management
Remote Web manager (optional)
Overload and short-circuit protection per channel
Port status indications
Standard 19-inch rack mountable
2.1 Power Management
When establishing a network, the total power required by PDs may exceed the
total power available from the Midspan. The built-in Power Management
feature does not allow the total power output to exceed the maximum power
available (refer to the Technical Specifications). When the total power
available is close to the maximum value, attempts to connect an additional PD
to a free port cause the corresponding port LED to blink green at an 0.5 sec.
rate, indicating an out-of-power budget, thus, this port will not deliver power.
The power distribution method is based on “First Come, First Served” logic.
Sometimes, connected operating PDs significantly increase or suddenly raise
their power requirements. If the required power exceeds the available power,
the Power over Ethernet Midspan starts to turn off ports in accordance with
their priority (the first turned off port is the lower priority port) until the total
power is once again under the maximum limit. Default priority is establishid by
port number: the higher the port number is, the lower priority it gets.
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2.2 10/100BASE-TX Ports Definition
2.2.1 Data Input Ports
The Midspan has 48 10/100Base-TX data input ports, configured in a noncrossover manner (straight-wired). These ports located on the PoE’s rear
panel of front box, are designed to carry Ethernet data only (Tx/Rx) over the
standard 2-wire pairs (pins 1/2 and 3/6) and are typically connected to existing
Etherner switch.
2.2.2 Data & Power Output Ports
The Midspan has 48 Data & Power output ports, located on the front panel
(Figure
wired) and are designed to carry Ethernet data over the standard 2-wire pairs
(pins 1/2 and 3/6) and DC power over the spare pairs (pins 4/5 and 7/8). Each
output port corresponds to an opposite
2-1). These ports are configured in a non-crossover manner (straight-
input port located on the rear panel.
The Midspan is not a repeater. As such, the maximum distance from the Ethernet switch to
PDs should not exceed 100 meters (328 ft). In accordance with the IEEE 802.3 standard,
Figure 2-1: Power over Ethernet Midspan, Front View
Figure 2-2: Power over Ethernet Midspan, Rear Vie w
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2.3 Indicators
A set of indicators provide the status of the Power over Ethernet Midspan and
its ports. Refer to Table 2-1 and Table 2-2 for status information during
operation.
2.3.1 Primary Power Indicators
A Primary Power LED (labled “AC”) is located on the front panel; the LED
provides Power over Ethernet Midspan power status.
When the indicator illuminates in green, it means that the Midspan receives
AC power. The “AC” indicator lits in orange to indicate Built In test failure.
Refer to Table 2-1: for additional information.
2.3.2 Port Indicators
One uni-color indicator (green) per port provides port status:
Green indicates that the PD (Powered Device)
is identified as "Power over Ethernet Enabled",
is active and receives power.
Blinking green indicates that the power is not
Refer to Table 2-1 and Table 2-2 for additional information.
delivered to a specific port.
Note Due to the standard detection process performed on
each PoE port, power is not supplied to an Ethernet
device that is not PoE-enabled. In this way, PDs (non
PoE -enabled) are not affected by connection to
Midspan’s output port.
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Table 2-1: Power Status Indications
Indicator Color Symptom Remarks
Internal power
Off
supply unit is
unplugged or faulty
AC
Green
Orange
Indicates AC power
input active
Internal problem
alarm
Internal power supply voltage is
too low.
Internal power supply voltage
is within tolerance.
Built in Test (BIT) failed.
Table 2-2: Port Status Indications
Port LED Color Port Load Conditions Port Voltage
Off
Green
Green blinks at a
1 sec. rate
Green blinks at a
0.5 sec. rate
Non-active load or
unplugged port.
Active load is plugged in
and complies with normal
load conditions.
Overload or short circuit. Power to the port is disconnected.
Valid load.
Total aggregated power
exceeds pre-defined
power budget (400w by
default).
Power to the port is disconnected. No
DC voltage present on spare pairs.
Continuous nominal DC voltage is
present on the spare pairs.
No DC voltage is present on the spare
pairs.
Power to the port is not connected or,
if previously connected –disconnected
at the moment.
No DC voltage is present on the spare
pairs.
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2.4 Connectors
The Midspan’s front panel includes a Console port (RJ-45 connect or) that
supports two communication types:
1. Standard DTE Ethernet connector only at the web managable version
of the midspan. This connector is a standard 10/100BaseTX port that
is used for remote management of the device (see Table 2-3).
For connecting the port to a switch output, use a straight-through
ethernet cable. for connecting the port directly to a PC port, use a
crossed-over ethernet cable.
Table 2-3: Console Ethernet Connector
Pin # Label Description
1 TX+ Plus signal, transmit from midspan
2 TX- Minus signal, transmit from midspan
3 RX+ Plus signal, received to midspan
4 spare
5 spare
6 RX- Minus signal, received to midspan
7 spare
8 spare
2. Proprietary RS232 connector for console purposes: The user may
connect a terminal and perform software loading via the connector,
using the console cable included in the supplied kit.
The console port is set to 38,400-baud, 8 data bits, no parity and 1
stop bit. The RJ-45 connector of the cable should be connected to the
Midspan’s console terminal and the D-type 9 pin should be connected
to the PC. Pin connections for the D-type connector are as follows:
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Table 2-4: Console Cable D-type Connector
Pin # Label Description
1 spare
2 RD DTE receive data
3 TD DTE transmit data
4 spare
5 GND DTE GND
6 spare
7 spare
8 spare
Each input port is configured as shown in Figure 2-3, as data “Pass-Through”
ports for all data pins (pins 1, 2, 3 and 6). Be certain to use Category 5 or
higher cabling.
Table 2-5: Rear Panel RJ45 Input Plug (Per Channel)
Pin # Label Description
1 P_RX+ Plus signal, Receive from DTE to PD
2 P_RX- Minus signal, Receive from DTE to PD
3 P_TX+ Plus signal, Transmit from DTE to PD
4 spare
5 spare
6 P_TX- Minus signal, Transmit from DTE to PD
7 spare
8 spare
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Table 2-6: Front Panel RJ45 Output Plug (per channel)
Pin # Label Description
1 P_RX+ Plus signal, Receive from DTE to PD
2 P_RX- Minus signal, Receive from DTE to PD
3 P_TX+ Plus signal, Transmit from DTE to PD
4 Vdc (+) Feeding power (+)
5 Vdc (+) Feeding power (+)
6 P_TX- Minus signal, Transmit from DTE to PD
7 Vdc (-) Feeding power (-)
8 Vdc (-) Feeding power (-)
Each output port is configured as shown in Figure 2-3, as data pass-through
ports for all data pins (pins 1, 2, 3 and 6) and DC power addition on the spare
pins (pins 4, 5 , 7 and 8). Be certain to use Category 5 or higher cabling.
Figure
pins.
2-3 illustrates the Midspan functionality that adds DC power to the spare
Ethernet
Switch
RJ-45
1
Data
2
Data
3
Data
4
5
6
Data
7
8
RJ-IN RJ-OUT
1
2
3
4
5
6
7
8
Power Bus
PD
Data
1
2
3
4
5
6
7
8
Data
Data
DC +
DC +
Data
DC -
DC -
1
2
3
4
RJ-45
5
6
7
8
Midspan Channel
Figure 2-3: Connecting to the Midspan
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3 Installing the Power over Ethernet
Midspan
3.1 Background
The Midspan is connected (see Figure 3-1) in series to an Ethernet
switch/hub. The data outputs from the switch are connected to Midspan’s
input ports. The Midspan delivers power over spare twisted pairs (pins
7/8 and pins 4/5) of the Category 5 cabling, without degrading the quality
of data communications of the output ports. The installation require the
Midspan to be rack mounted, as described in the next Paragraph.
Figure
Installation process should be conducted by a qualified technician in the
following way:
Rack Mounting Brackets
Routing the Input Ports Cables
Assembling Midspan to Rack
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3-1: Typical Installation
PD-6548
3.2 Rack Mounting Brackets
The Midspan is supplied with mounting brackets, plates and screws
utilized for assembling the Midspan in an 19-in rack.
1. Install two clip nuts on each bracket.
2. Tighten two brackets to both sides of the rack‘s rails using the
supplied plates and 10-32” screws as shown below.
DETAIL-A
2 PLS.
CLIP NUT
RAIL
PLATE
BRACKET
SCREW CSK NF 10-32 (x2)
CLIP NUT
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3.3 Routing the Input Ports Cables
The ports on the front panel of the Midspan are configured as "Pass
Through" ports for all 48 conductors of the RJ-45 connectors. Use
Category 5 jumpers cables with a diameter that is less than 0.25 inch in
making connections.
*Using an appropriate bench, connect all the cables to the Midspan as
follows:
1. Connect cables to the Data input ports as shown below:
Chasis
‘Ears’
2. Start connecting the cables in groups of six as shown above.
For proper wiring, each group should be tied using plastic
straps. The cables should be routed via the side path to the
Midspan’s front side. Every two groups should be tied together
to chasis ‘ears’ as shown above.
3. Repeat the above mentioned procedure for the rest of the
cables, thus 24 cables are routed via left/right side path.
*Midspan cables connection may also be performed by firstly assembling the
midspan to the rack by the brackets. In such a case take all necessary
precautions to prevent the Midspan from falling down to the floor!
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Figure
4. Upon completion of 48 cables connections, the Midspan should
be installed into the rack.
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3-2: Cable Connections
PD-6548
3.4 Assembling Midspan to Rack
Assemble the Midspan (including its cables) to the previously installed
brackets as shown below, using two 10-32” screws plus lock washer and
flat washer (one on each side of the rack).
Note: Verify that the Midspan’s ventilation holes on both sides are not
blocked and are free of dust and foreign objects!
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3.5 Connecting Data Cables
1. Connect the previously routed cables to the switch’s output ports.
2. Connect the cables from the IEEE 802.3af ready terminals (PDs)
to the corresponding Data & Power ports on the Midspan’s front
panel.
3.6 Connecting Power Cables
When using AC source to power the Midspan, plug in the provided power
cord at the rear AC connector.
Notes:
♦ A readily accessible disconnect device shall be incorporated in the
building installation wiring.
♦ The PD-6548 Midspan should be installed at Restricted Access Location
3.7 Powering up
The Power over Ethernet Midspan has no on/off switch. To apply or
remove power to the Midspan, insert or remove the power cable from the
AC receptacle on the rear panel of the unit.
With power applied, the Midspan powers-up and the internal fan
operates; then, the device runs through its power-on self-test (POST),
which takes less than 10 seconds. During the POST, all ports are
disabled and the indicators illuminate in the following sequence:
1. AC indicator illuminates orange
2. Port indicators and AC power indicator illuminate green.
3. Main AC indicator remains lit green; port indicators are off.
Ports are now enabled for normal operation.
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3.8 Troubleshooting
3.8.1 Preliminary Steps
If you encounter problems, verify that:
1. Power is applied to the Midspan
2. A crossover-type Ethernet cable has not been used
3. The Ethernet cable from the network is connected to the Data
input port
4. The Ethernet cable to the PD is connected to the Data & Power
output port
3.8.2 Troubleshooting Guide
This paragraph provides a symptom and resolution sequence in order to
assist in the troubleshooting of minor operating problems. If the steps
given do not solve your problem, do not hesitate to call your local dealer
for further assistance. Refer to Table 3-1.
Table 3-1: Troubleshooting Steps
Symptom Corrective Steps
Midspan does not power
up
A port indicator is not lit
and the corresponding PD
does not operate.
1. Verify that a known-good power cord is used.
2. Verify that the voltage at the power inlet is between 100 and 240 Vac.
3. Remove and re-apply power to the device and check the indicators
during power up sequence as described in Para. 3.7.
1. The Midspan did not detect a PD and therefore the port is not enabled.
2. Verify that the PD is designed for Power over Ethernet operation.
3. Verify that you are using a standard Category 5/5e/6, straight-wired
cable, with four pairs.
4. If an external power splitter is in use, replace it with a known-good
splitter.
5. Verify that the PD is connected to the Data & Power output port.
6. Try to reconnect the same PD to a different port on the same or into
another Midspan. If it works, there is probably a faulty output port or
RJ-45 connection.
7. Verify that port shutdown command was not issued via the Web
manaegment.
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Table 3-1: Troubleshooting Steps
Symptom Corrective Steps
AC indicator lit orange
Midspan repeatedly
shutsdown for few
minutes and then starts
The end device
operates, but there is
no data link.
Power-on self-test failed: the Midspan detected an internal fault. In this
case, contact your local dealer.
Verify that the ventilation holes are not blocked.
1. Verify that the port indicator on the front panel is continuously lit.
2. If an external power splitter is in use, replace it with a known-good
splitter.
3. Verify that for this link, you are using standard UTP/FTP Category 5
straight (non-crossover) cabling, with all four pairs. Check that the
link is 100 m or less.
4. Try to re-connect the same end device into a different port on the
same unit or into another Midspan – if it works, there is probably a
faulty input/output port, or RJ-45 connection.
Midspan port indicator
is blinking at a 1 sec.
rate
Midspan port indicator
is blinking at a 0.5 sec.
rate
This is a safe condition. The blinking green indication is due to:
1. A device, not compliant to IEEE 802.3af, was detected.
2. Terminals 4/5 and 7/8 are shorted together.
3. Forced external power fed into the port.
During these conditions, port power is disconnected.
This is a safe condition. The blinking green indication is due to a power
management event.
In such event the corresponding port to the indicator, requires power that
exceeds power budget capability of the Midspan. During these conditions,
port power is disconnected.
A port will operate when total power consumption of the Midspan
decreases.
try to connect the PD to another Midspan to verify that the PD is valid.
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3.9 Technical Specifications
3.9.1 Physical Specifications
Height: 1U 44mm, 1.75”
Width: standard 19” Rack mount 438mm, 17.2”
Depth: 460mm, 18.1”
Weight: 7.5 Kg, 15 lb.
Temperature
- Operating 0 to 40 °C (32 to 122 °F)
- Storage -20 to 70 °C (-4 to 158 °F)
Humidity 10 to 90% (non-condensing)
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4 Remote Web Management
Remote Web Management is an optional feature, for monitoring and
control of the device. For further details, refer to PowerDsine’s
PowerView, Power over Ethernet Web Manager User Guide. PowerView
manages Midspans via an Web Manager or via a remote Network
Management station, using Java applets. The system provides direct online power supervision, configuration, monitoring, diagnostics.and control
of PowerDsine products, via their SNMP agents. PowerDsine PowerView
allows monitoring and controlling at Network and Element levels, as
shown in Figure 4-1:
Figure 4-1: Management Deployment
PowerDsine PowerView provides a number of unique features for PoL
Midspan management:
Web-based application for remote management of Power over
Ethernet devices
Web management capabilities for network element
management
Configuration using graphical representations of remote device
Real time monitoring with visual status indicators and alarms
Real time power parameters
Optional DHCP enabled-client
Runs on a PC platform with Windows graphic user interface
(GUI).
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Power over Ethernet Solutions 27 Cat. No.: 06-6860-056
Covered under U.S patent S/N 6,473,608 and equivalent worldwide
Visit our web site at: www.powerdsine.com
For technical support, call: +972-9-7755123
In the USA: +631-756-4680 or 1-877-4-802-3AF
Part Number: 06-6860-056 Rev 1.1
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