Exponation AIA Provider Number: 70119700 Lighting with Power over Ethernet (PoE), an IT Convergence LEDSSNW16-S11 Scott Ziegenfus, Hubbell Lighting Inc. 9.22.16
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Course Learning Description Objectives ● The listener will be able to understand what This session will give an overview of lighting the term PoE means and what it does not within the PoE landscape, how PoE lighting mean in benefits and capabilities when works within the IEEE 802.3 Ethernet associated with a lighting systemPoE network standard, and some NEC and UL architecture and how it can be applied to considerations with PoE. Finally we will lighting along with NEC and UL. discuss how PoE can lay the wired ● The listener will gain knowledge of IEEE foundation of the possibilities of the Internet 802.3 Ethernet PoE network architecture and of Things (IoT) and where it can help take us how it can be applied to lighting along with in the future. NEC and UL considerations. ● The listener will acquire a good understanding of the basic technology and terminology of a PoE lighting infrastructure. to move data along with power. ● The listener will understand where PoE fits in the goals of lighting for the future in the world if IoT.
PoE = Power over Ethernet • PoE is an INDUSTY TERM somewhat defined but not well defined like food labeled “Natural” • Generally PoE means at least - Low voltage power over the same network type infrastructure and on the same wires that data CAN be sent. • A PoE application may or may not follow recognized IEEE 802.3 standards made for PoE BUT! What is the meaning of 'natural' on the label of food? From a food science perspective, it is difficult to define a food product that is 'natural' because the food has probably been processed and is no longer the product of the earth. That said, FDA has not developed a definition for use of the term natural or its derivatives. However, the agency has not objected to the use of the term if the food does not contain added color, artificial flavors, or synthetic substances. http://www.fda.gov/aboutfda/transparency/basics/ucm214868.htm
What is PoE within a Network • The IEEE 802.3 Ethernet standard is the most common protocol for the foundation of any wired network and PoE is the power transport part of that network . - PoE is NOT the data (message) or the Application “It’s the highway not the cars” 7 Application Telnet HTTP FTP BACnet Software 6 Presentation The DATA and Application and 5 Session That PoE is not = = Software Addresses 4 Transport TCP/UDP 3 Network IP Ethernet forms the Connections ARCNET Ethernet 2 Data Wi-Fi = = and foundation of wired Hardware 1 Physical networks Addresses
PoE and IEEE Standards • IEEE 802.3 defines the Ethernet standard - Clause 33 of the IEEE 802.3 Standard defines PoE • af- Addenda published 2003, DTE Power via MDI . (known as PoE) • at- Addenda published 2009, DTE Power Enhancements . (Known as PoE+) • bt-Addenda in committee, DTE Power via MDI over 4-Pair (Known as PoE++) - Networks applying these standard are considered PoE • Remember a system may claim PoE without applying these standards IEEE 802.3 ETHERNET WORKING GROUP http://www.ieee802.org/3/index.html CLAUSE 33 in IEEE 802.3
What is IEEE802.3 af (PoE) / at(PoE+) • Terminology - Power Device (PD) = receives power - Power Sourcing Equipment (PSE) = supplies power • Endpoint PSE= Power Sourcing Equipment (PSE) that is located at an endpoint • Midspan PSE=:Power Sourcing Equipment (PSE) that is located within a link segment that is distinctly separate from and between the endpoints - PoE Splitter= adapter that lets non-PoE devices work in a PoE network by pulling power to the end node but not the data
IEEE 802.3 af (PoE) / at (PoE+) Modes • Power defined over 2 pair wires with 2 operation modes - MODE A = DATA & Power same wire - MODE B =DATA & Power separate wires - Compatibility - PSEs may support Mode A only or Mode B only or Modes A & B and the same goes for PDs. • Midspan PSEs are only MODE B
IEEE 802.3 af (PoE) / at (PoE++) A & B B GOOD PSE PD A A or B GOOD PSE PD A B BAD PSE PD Modes in PSE and PD must be COMPATABLE!!!
IEEE 802.3 af (PoE) / at (PoE++) • Power Ranges PSE Supply Current Max at Parameters Voltage Min Voltage Max Power Max steady state 15.4W PSE Supplied af 44 V 57V 350mA PSE supplied at 50V 57V 600mA 30.0W
IEEE 802.3 af and at Losses • Mid span architecture can minimizes loss DATA Closet (IDF/MDF) Wall or Ceiling rack Layer 2 Network PoE Midspan Injector Switch (no PoE) (add Power) Ethernet (Data Only) Ethernet w/ PoE (Data 100m and power) - Midspan injector can be placed in the lighting space/room/area - DC loop resistance minimized - This topology can be adapted to any PoE lighting architecture - PoE injectors can be down to a single port injector
IEEE 802.3 af/at Ethernet wiring • Ethernet and PoE Wiring standard - af wiring uses a listed TIA-568 Category 3 (Cat3) or better wire. - at wiring uses a listed TIA-568 Category 5e (Cat5e) or better wire. - Wiring spans maximum is 100m or 328 ft end to end - All wires home run from any PD (endpoint) to a PSE. - Single wire connection from any PD to a single endpoint
IEEE 802.3 af/at Ethernet wiring TAKE AWAY FOLLOWS THE SAME RULES AS STANDARD ETHERENT COPPER WIRING. DISTANCE / CONNECTIONS / TOPOLOGY *Remember the DC power losses
IEEE 802.3 af (PoE) / at (PoE++) • PSE Detection of PDs - At initial power up there is a detection operation for PoE so as to not damage equipment not designed for PoE. - PDs may show at power up a Classification signature showing the maximum power a PD can receive but is optional. - PD default classification for no signature is 0 being that is the same as class 3, maximum for af. - Classification signature is for better efficiency PoE Power Classification for IEEE 802.3 af and IEEE 802.3 at for 2 pair cabling at only PoE Power Class 1 2 3 4 PSE MAx Power available 4.0W 7.0W 15.4W 30.0W PD Max device power 3.84W 6.49W 12.95W 25.5W
IEEE 802.3 af (PoE) / at (PoE++) TAKE AWAY DEVICES THAT ARE ETHERENT BUT NOT PoE WILL NOT BE DAMAGED BY PLUGGIN INTO A PSE DEVICE
IEEE 802.3 af (PoE) / at (PoE++) • Energy Efficiency • Energy Efficiency of PoE Lighting systems is dependent on 3 variables • Electrical efficiency of PSE • Electrical efficiency of DC ‐ DC conversion in Luminaire • Electrical energy losses of cabling (distance and resistance) can be up to 20% • Example; PSE sends maximum power at minimum voltage to PD. Using a standard Cat5e cable with a length of 100m attains a resistance of approx.12.5 Ω losses Cat5e is 15% Loss = (600mA) 2 *12.5 Ω = 4.50W Power at PD = 30.0W- 4.50W = 25.50W - This is a major consideration for lighting • ANSI C137 Lighting Systems Committee is working on a standard for cable efficiency
IEEE 802.3 af (PoE) / at (PoE++) TAKE AWAY Power of the Source (PSE) is not the same level of power at the Device (PD) Power losses to the PD is all about the cable used and the distance run.
More Power IEEE 802.3 bt (PoE++) • NEW IEEE 802.3 bt PoE standard coming for higher power • 2-pair systems. Compatibility with existing equipment will be maintained (Just added to scope) • Capability of up to 90W at the PSE. • This is a 4 pair installation (4PPoE) • Proposed 8 classifications • Still in committee
Cisco Proprietary UPoE • Cisco Universal Power Over Ethernet (UPoE) - Using all 4 pair for 60 W at the PSE - Power at PD (100m cable) 51W available at PD - Cat5e or better cable - UPoE, Power is proprietary, Datalink is standard Ethernet • Cisco UPoE network switches can auto discover and provide UPoE, PoE, and PoE+ - A UPoE, PoE, and PoE+ PD can go on a UPoE Cisco Switch - Only a PoE and PoE+ can connect to a non Cisco Switch
Proprietary PoE with Data TAKE AWAY TODAY 2 PAIR IS COVERED BY THE STANDARD AND USE OF ALL 4 PAIR IS NOT HIGHER THEN 30 WATTS AT THE PSE WILL BE OR PROPRIATARY. UNTIL IEEE 802.3 BT IS PUBLISHED
Why PoE and Lighting • LEDs Lighting is naturally circuited for PoE WHAT PoE IS DESIGNED FOR Transformer to change Rectifier to change form Light Engine Circuit Dimmable LED Driver Circuit from voltage from high to low AC to DC www.brighthubengineering.com • PoE has the power for LEDs Lighting Troffers power Downlight power Wall Washers power less then IEEE less then IEEE less then IEEE 802.3af and at easily 802.3at easily 802.3af and at easily found found found
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