April 2012

Application Feature

GE LED Lighting Brings New Radiance, Energy Savings to Marriott Headquarters

In the foyer, special scaffolding is needed to reach fixtures in the high ceiling. Marriott would change the lights, which lasted just one to two years on average, only once a year at a cost close to $3,000. Maintenance savings will now add up after GE replaced 12 90-watt bulbs with 20-watt LED PAR38 lamps. Rated for 50,000 hours of life, GE's LEDs could keep the scaffolding away for up to seven years.

GE Lighting LED solutions were recently installed in several locations at Marriott International's headquarters located in Bethesda, Md. The installations have enriched lighting quality, heightened employee security and improved energy efficiency. Following its corporate campus-wide lighting update, Marriott will use 860,000 fewer kilowatt hours (kWhs) of electricity and save more than $120,000 in combined energy and maintenance costs a year.

Enhancing outdoor security while saving money - Security and energy savings were top priorities when considering new lighting to cover the nearly 2 million square feet (45 acres) of parking and garage space at Marriott headquarters. After testing competitive exterior garage fixtures, parking lot lights and contemporary post tops, Marriott selected GE's family of high-efficiency Evolve LED lighting systems.
 
"We preferred the exceptional output and uniformity of GE's Evolve LED lighting," said Jim Young, vice president, corporate facilities for Marriott International, Inc. "GE performed a comprehensive lighting audit of our existing system, provided photometric analysis with 3D renderings of the new system, and forecasted our energy and maintenance savings. GE excelled as both a trusted strategic consultant and solutions provider."

More than 230 Evolve LED Area Lights now illuminate Marriott's outdoor lots, while inside the parking deck nearly 400 Evolve LED Garage Light fixtures and several Evolve LED Tunnel Light installations-as well as more efficient GE T8 fluorescent lamps-help light the way for associates to and from the headquarters offices. Collectively, a 280-watt reduction per outdoor lighting fixture will cut electricity use by 580,000 kWhs a year, equating to $70,000 in utility cost savings.

"GE's portfolio of exterior lighting products includes many aesthetically attractive fixtures offering long life, durable construction and an assortment of beam spreads to suit a wide variety of applications," said Steve Briggs, vice president of product management and marketing for GE Lighting Solutions. "Our LED area lights consume between 97 and 220 watts and were designed to replace traditional 400- to 1,000-watt high-intensity discharge (HID) systems that can spill and waste light."

Marriott also gained the functionality to dim its new garage lighting with GE's ProSys Lighting Control system incorporating motion sensors. Light output is reduced to 40 percent while the garage is vacant and adjusts to 100 percent when motion is detected. Alone, this precise control will produce nearly $11,000 in energy savings (88,000-kWh reduction) each year. And, the control system will interface with Marriott's video surveillance center, alerting guards to after-hours movement in the deck and focusing the nearest security camera to where motion is detected.

Marriott also coordinated with Montgomery County government officials to replace 32 180-watt metal halide streetlights along the road that serves its headquarters and neighboring companies. With the first cost of GE's 106-watt Evolve LED Roadway Cobrahead fixtures covered by Marriott, the county will see an immediate benefit: using 10,000 fewer kWhs each year provides a $1,200 annual energy savings.

Investing in indoor Illumination - Moving inside Marriott's eight-floor, 900,000-square-foot headquarters, GE replaced 1,000 65-watt bulbs with 7-watt LED PAR20 lamps in all hallways. The 58-watt difference will mean a nearly $18,000 difference (150,000-kWh savings) in electricity expense over 261 working days.

In the foyer, special scaffolding is needed to reach fixtures in the high ceiling. Marriott would change the lights, which lasted just one to two years on average, only once a year at a cost close to $3,000. Maintenance savings will now add up after GE replaced 12 90-watt bulbs with 20-watt LED PAR38 lamps. Rated for 50,000 hours of life, GE's LEDs could keep the scaffolding away for up to seven years.

Meanwhile in the auditorium, combined halogen and compact fluorescent lamp (CFL) lighting was inadequate for Marriott's advanced dimming system. While the halogen lights could be darkened, the CFLs could not. A total of 140 GE 12-watt LED BR30 lamps improved the functionality of the space, producing a fully dimmable system with higher light levels and more light uniformity in addition to $2,300 in energy savings.

Seventy-two new GE Lumination Recessed LED Troffers were next added to the building's lower level. When illuminated, the 2'x2' fixtures produce an even glow. While off, they appear completely free of a light source to blend in with the ceiling, enhancing the elegant aesthetic of Marriott's employee space that includes a daycare and cafeteria.

GE also retrofit the 'Marriott' sign at the Bethesda headquarters entrance with Tetra PowerStrip LED lighting, improving maintenance cycles from two to three times per year to once every five to 10 years.

Rapid returns - Marriott's comprehensive LED update will decrease annual electricity use by 66 percent (680,000 kWhs outside; 180,000 kWhs inside) at its headquarters, slashing energy expense an estimated $104,000. Maintenance mitigation will yield an additional $210,000 savings over the next decade for a total return exceeding $120,000 a year. Marriott will also receive more than $130,000 in utility rebates and EPACT savings. All told, the anticipated payback period for the lighting project is slightly more than two years, based on combined electricity, maintenance and labor reductions.

"Marriott has demonstrated its commitment to minimizing the environmental impact of its business operations many times throughout this project," Briggs said. "For GE it's been a source of great pride to help Marriott achieve its goal of reducing energy consumption by 25 percent per available room by 2017."

Click here to see the 2011 ZigBee Resource Guide!

Webcom Communications, in cooperation with the ZigBee Alliance, is proud to announce the Summer 2012 publication of the ZigBee Resource Guide.

The guide is a magazine-style solutions guide, focusing solely on products, applications and solutions for end-users and integrators of ZigBee. The objective is to introduce potential customers to the benefits of ZigBee, and to guide them to leading suppliers of ZigBee products and the deadline to participate in this issue is April 19th, 2012.

Contact Laura Mayo to place your ad! 

Philips Lumileds Brings New Standards to Mid-Power LEDs for Illumination
Philips Lumileds has launched its first white, mid-power LED and in doing so has raised expectations for mid-power reliability, performance over time and temperature, and color maintenance. Intended for office and other distributed LED lighting solutions, Philips Lumileds uniquely specifies CCT, CRI, and R9 for each of its new mid-power emitters.

“The lighting industry’s performance expectations of mid-power LEDs is well below the expectations for power LEDs,” said Rahul Bammi, VP Marketing at Philips Lumileds. “We believe that distributed light solutions like those found in offices should deliver quality of light, color stability and useable lifetimes similar to what our LUXEON LEDs deliver. Most importantly, lighting designers and technical specifiers should have the confidence that the light source inside will perform as intended. We are certain that the new Lumileds 5630 emitters will outperform other options over their lifetime.”

Philips Lumileds extends its mid-power portfolio to general Illumination applications. Philips Lumileds other mid-power products include SuperFlux, SnapLED and SignalSure LEDs, which are the most widely used LEDs for automotive exterior lighting.

Sharp Presents a New Generation of Its Mini Zenigata LEDs
The new product generation is again based on a small plate made of technical ceramics (aluminium oxide Al2O3) with the dimensions 15 mm by 12 mm by 1.6 mm. Efficiency was able to be improved by up to 11 percent due to technical progress.

Depending on the module, the new types provide a luminous flux of up to (typically) 585 lumens, with a light efficiency of up to 91 lm/W at nominal operating data, a high CRI value of 82, and a long service life of 40,000 hours at an operating temperature of up to 90°C.

The new generation of 4 W arrays has a forward voltage of 9.6 V with a constant current of 400 mA, whereas the 7 W arrays have a voltage of 12.3 V with a current of 520 mA. The 4 W arrays, however, can also be operated with an increased constant current of 500 mA, thus making them capable of reaching a luminous flux of up to 400 lm. With the 7 W arrays, a luminous flux of up to 830 lumens can be reached, if they are operated with a current of 680 mA. The color temperatures of the new white-light LED arrays range from 2,700 to 6,500 Kelvin’s, with the shades Natural White, Warm White and Pure White.

The very smooth surface of the ceramic underside of the Mini Zenigata makes it possible to attach the modules easily and safely on a suitable heat sink, in order to achieve efficient heat dissipation.

Initial samples are available in the color temperatures of 3000 K and 4000 K. These can now be ordered from Sharp sales offices and distribution partners across Europe.

TI Introduces Industry’s First Dual Mode Off-Line Controller for Non-Dimmable LED Lighting
Texas Instruments, Inc. has introduced a new off-line primary side sensing controller to its portfolio of non-dimming LED drivers. The new TPS92310 AC/DC constant current driver with power factor correction (PFC) reduces cost and shrinks-to-fit in high-power LED retrofit bulbs, including A19, PAR30/38 and GU10.

The TPS92310 is the first in a family of primary side, regulated controllers with PFC. In May, TI will offer the TPS92311 with similar features and an integrated, 600 V power FET with avalanche energy capability, further reducing solution size and component count. The TPS92310 and TPS92311 join TI’s portfolio of off-line LED lighting controllers that include the National LM3445, the industry’s first TRIAC dimmable LED driver with both full-range and flicker-free dimming.

The TPS92310 is available in volume now from TI and its authorized distributors.  Offered in a 10-pin MSOP package, the suggested retail price is $0.49 in 1,000-unit quantities.

18 Watt Constant Current AC/DC LED Power Supply  
Green Watt Power, a Division of Calex Mfg., has announced the GLC-18 series of constant current  AC/DC  LED power supplies. The GLC-18 series with universal / full range AC input voltage of 100 to 277 VAC, offers 18 W output power and is available in three different models of constant current output at 350 mA, 500 mA and 750 mA with self-adjusting output voltage from 18 VDC to 54 VDC range in the various models. All models are enclosed to IP67 standards in extruded aluminium metal case design and well-suited for virtually all LED lighting applications for indoor, outdoor, signage, refrigeration, thermally harsh and damp environments.

The GLC-18 has efficiencies in the 85 percent range in the series with active power factor correction greater than 0.90 on every model. All units in the series have over voltage, over current, over temperature protection and are RoHS Compliant. Safety Agency approval is pending to UL/CSA 8750 and 1310 class 2 or 1 depending upon the model. Products in the series are CE approved. The product case dimension is 4.72”(L) by 1.38”(W) by 1.02”(H) with customer mounting provisions designed in the case design. All products in the series are designed and built for consistent performance and high reliability and come with a five year warranty.

Allegro MicroSystems, Inc. Introduces New Single Stage Off-Line LED Driver IC Series
Allegro MicroSystems, Inc. has introduced the LC5540LD/LF single stage power factor corrected off-line LED driver IC series, which is manufactured and developed by Sanken Electric Co., Ltd. in Japan. The robust functions within these single stage converters have been developed to simplify system designs. This new series is targeted at the consumer and industrial markets targeting indoor and outdoor LED lighting and off-line LED lighting applications.

The LC5540LD/LF series are quasi-resonant topology switching power supply ICs, designed for input capacitorless applications making it possible for systems to comply with the harmonics standard (IEC61000-3-2 class C). These devices incorporate separate controller and power MOSFET chips. The controller adapts the average current control method for realizing high power factors, and the quasi-resonant topology contributes to the high efficiency and low EMI noise. The rich set of protection features helps to realize low component counts and high performance-to-cost power supply.

These devices are intended for isolated designs. The incorporated MOSFET has a VDSS (min) rating from 650 V (LC5545LD, LC5546LD, LC5546LF, and LC5547LF,) to 800 V (LC5548LD and LC5549LF). The RDS(on)(max) is 1.1 Ω (LC5547LF), 1.9 Ω (LC5546LD and LC5546LF,) and 3.95 Ω (LC5545LD). These devices are capable of a maximum output power of 20 to 80 W on a 230 VAC supply to 16 W (LC5546LD) to 55 W (LC5547LF) on a universal supply based on the thermal rating. Note that the maximum output power can be up to 120 percent to 140 percent of this value. However, it may be limited in applications with low output voltage or short duty cycle.

This series is available in the DIP8 and TO220 packages that have been designed to protect the IC and overall system from excessive heat. Similar competitive designs on the market cannot easily detect the power MOSFET rising temperatures.

Excelitas Technologies Introduces its Newest White ACULED for Medical OEM Applications
Excelitas Technologies has introduced its newest model in the ACULED family of chip-on-board LED packages, one expressly designed to meet the rigorous performance requirements of medical applications such as surgical operating room lights, examination lights and dental operatory lights.

Excelitas’ newest ACULED model contains four separately addressable LED chips to provide widely tunable color temperatures (CCT) from 3,500 K to 5,500 K, while maintaining the high Color Rendering Index (CRI), high R9 value, and light output (luminous flux) required in the operating room. With the new ACULED model, CRIs over 95 are achievable along with R9 values of well above 90. CRI is a quantitative measure of the ability of a light source to reproduce colors in comparison to a reference light source, evaluated on a 100-point scale. The R9 value indicates how well the light shows deep, saturated shades of red. The color red is clearly critical in medical applications such as surgery.

Additional benefits of the ACULED platform include improved heat transfer from the chips to substrate and heat sink, and its compact design with chips that are extremely closely spaced, allowing for better color mixing and compact optics.

Excelitas offers a standard four-chip COB package (ACULED Model R3C6) that comes with warm-white, cool-white, red and cyan LED dice. In addition, Excelitas offers a variety of design-your-own (DYO) chip combinations, one of the hallmarks of the flexible ACULED platform. All ACULED models are manufactured in Excelitas Technologies’ Pfaffenhofen, Germany facility, which is ISO 9001-certified.

“Excelitas’ newest ACULED for high CRI medical applications is an important addition to our growing portfolio of solid-state lighting products that are specifically designed for integration into OEM medical applications such as surgical operating room lights,” said Joel Falcone, senior vice president and general manager of Excelitas Technologies’ global lighting business. “LEDs are rapidly becoming the standard for surgical operating room lighting versus halogen and Xenon technologies and, through its flexible ACULED platform, Excelitas is excited to be able to provide medical OEMs with attractive options for a surgical lighting system that can effectively balance color temperature with CRI and light brightness."

GE Releases Zhaga-Compliant LED Modules
GE Lighting has made a significant breakthrough in the move toward greater standardization of LED light engines with the announcement of its first *Zhaga-compliant products.

GE Lighting's full range of Infusion LED modules will be carrying the Zhaga logo based on the modules being designed to the approved Zhaga 'Book 5' specification for Socketable Light Engines with Separate Electronic Control Gear. The Zhaga Consortium creates specifications aimed at ensuring the interchangeability of LED light sources from different manufacturers.

"These specifications are the path forward for LED modules and fixtures that can truly transform the way we light commercial and residential spaces," said John Strainic, global product general manager, GE Lighting. "Lighting designers and specification professionals around the world now have more freedom to think big because GE and the industry have progressed toward standards established by the Zhaga Consortium."

GE Lighting is also extending the range with the introduction of four new LED module products: a module for downlight applications, a modular system for creating high-intensity narrow beams, a new format spotlight engine based on Zhaga specification in 'Book 3', and a high lumen option. All have been designed with new interchangeable light engine specifications recently approved by the Zhaga Consortium.

GE Lighting has been a member of the Zhaga Consortium, a global consortium of companies from the lighting industry and beyond, since the consortium's establishment in February 2010. In view of the rapid and sustained development of LED technology, the Zhaga Consortium focuses on the mechanical, photometric, thermal and electrical compatibility of LED modules and controls.

"Modularity and interchangeability will benefit manufacturers and end users alike," said Andy Davies, sales development director for LED modules, GE Lighting. "The adoption of Zhaga specifications will speed product introduction, and reduce risk and development cost, while still encouraging design innovation. The further we travel down this path, the more accessible LEDs will become."

For more information about Zhaga visit www.zhagastandard.org.

*Zhaga is a trademark of the Zhaga Consortium.

Lumenpulse Expands Lumenbeam Series with Small Version
Lumenpulse, Inc. has released the Lumenbeam Small. Developed for exterior applications such as lighting landscapes, trees, pathways, monuments and architectural details, the Lumenbeam Small is a compact, low-wattage, high performance projector.

Using 14 watts, the Lumenbeam Small is a line voltage luminaire (120 to 277 volts), and offers a flexible package of options, including a choice of optics for flood or accent lighting. A range of accessories, including snoots and visors, help with beam control and avoid glare, while a wire guard provides protection for the fixture. Available in various color temperatures, the Lumenbeam Small has an optional corrosion-resistant coating that protects the luminaire in marine and coastal areas.

A new stake mount option enables Lumenbeam Small and Lumenbeam Medium models to be secured in the ground for garden and landscape lighting applications. And with pole mount, wall mount and surface ground mount options, combined with a compact footprint for tight spaces, the Lumenbeam Small provides additional flexibility for designers.

“The Lumenbeam Small meets a need that has been expressed to us repeatedly by lighting designers, who want to carry their design to the pathways and landscaped areas approaching the building,” said Yvan Hamel, Lumenpulse Vice President of Product Development. “It is a very versatile fixture with its size, mounting options, color choices and accessories offering flexibility to meet many challenges.”

Available in white, static colors, dynamic white and RGB, the white product is offered in five color temperatures; 2700 K, 3000 K, 3500 K, 4000 K and 5700 K. The 4000 K version produces 28,261 candelas at nadir with a 6˚ optic. Finally, Lumenpulse products, including the Lumenbeam Small, utilize a dual chamber technology, which helps dissipate heat creating an unmatched L70 lifetime of 120,000 hours.  

Phihong Develops 80W External AC/DC LED Driver
Phihong USA has developed a new 80 W constant voltage LED driver that is well suited for a variety of harsh environment lighting applications. Designated the PDA080B-48VG, the universal input driver is rated for inputs of 100 VAC to 304 VAC and has a maximum output of 80 W at 48 VDC and 1.67 A.

“This new outdoor LED driver satisfies a niche architectural lighting design need by providing enough power to operate several luminaires at once for wash and area lighting,” said Keith Hopwood, vice president of marketing for Phihong USA. “The constant voltage design enables users to power an array of individual luminaires via driver ICs, eliminating the need for each to have its own separate driver.”

The new AC/DC LED driver is compliant with UL8750 and bears safety approvals from CE and cUL/UL. Additionally, the universal input of 100 to 304 VAC enables the driver to be fully functional at mains voltage inputs ranging from the standard North American 120 and 277 VAC to the standard European 230 and 240 VAC.

The PDA080B is water-resistant and fully potted, featuring an ingress protection rating of 65, and can withstand temperatures ranging from -40°C to 60°C. The driver has minimum average efficiency ratings ranging from 84 percent at 120 VAC input to more than 88 percent at 277 VAC input and has a calculated lifespan of 50,000 hours when operating at maximum load and an ambient 50°C.

The 80W LED driver also comes fully equipped with input over-current protection, short-circuit protection, output over-voltage protection, and open-circuit protection; features a minimum power factor correction greater than 0.9; and is covered by the five year warranty that Phihong offers on select LED drivers, including the PDA080 driver series.

Designed as a typical ballast with regards to shape and size, the PDA080B can be incorporated into new outdoor architectural lighting designs. Each driver measures 241 mm by 43 mm by 30.5mm and weighs 750 grams. Pricing for the PDA080B-48VG starts at $99.97 in single unit quantities.

Strategy Analytics: LED Market Remains Unsettled
Equipment Spending Forecast to Decline in 2012
After two years of explosive revenue growth, the LED market appears to be slowing down in 2012. The Strategy Analytics GaAs and Compound Semiconductor Technologies Service (GaAs) viewpoint, “Compound Semiconductor Industry Review January 2012: Optoelectronics, Materials and Equipment,” highlights news that equipment spending and epitaxial substrate demand in the LED sector will decline in 2012. This validates recent announcements from equipment manufacturers, like AIXTON, that substantial funding from Asian governments has been masking inherent softness in LED demand. The report also captures announcements for companies such as Soitec, Sumitomo Electric, AXT, IQE, Oclaro, Cree, Renesas Electronics, GigOptix, Avago Technologies, JDSU, Lumileds and First Solar.

“The LED industry has grown in cycles,” observed Eric Higham, director of the Strategy Analytics GaAs and Compound Semiconductor Technologies Service. “The first phase involved backlighting for small consumer devices, like mobile handsets. These solutions have evolved to meet the needs of laptop, television, electronic sign and automotive applications and the next wave for LED adoption appears to be commercial and residential lighting”.

Asif Anwar, director, Strategy Analytics Strategic Technologies Practice added, “Despite a slowdown in demand, companies are hard at work developing products that improve the performance and cost of devices in preparation for the next wave of LED adoption.”

This Strategy Analytics viewpoint summarizes financial, product, contract and employment announcements from major optoelectronic material, device and equipment suppliers in January 2012, categorizing by material and equipment, laser, LED and compound photovoltaic activity.

DOE Releases GATEWAY Report on Museum LED Retrofit Lighting
The US Department of Energy (DOE) has published the final evaluation report from a retrofit of track lighting used to illuminate a special photography exhibition at the J. Paul Getty Museum in Malibu, Calif. During the demonstration, 12 W LED PAR 38 lamps replaced 60 W halogen PAR 38 30° flood lamps on a one-for-one basis across three adjacent gallery spaces. This GATEWAY demonstration report describes the process for the demonstration and provides potential energy savings and economic results. The report, co-authored with senior scientist Jim Druzik of the Getty Conservation Institute, also includes research findings about the photodegradation potential of LEDs compared to UV/IR filtered halogen lamps.

Key findings include:

• In the three gallery spaces, a total of 34 track heads lamped with the LED lamps would use 920 kWh per year compared to 5410 kWh for the comparable halogen lighting system, representing a savings of 83 percent. At a melded electrical rate of $0.12/kWh, this translates to a savings of $540 per year for the museum.
• In a 10-year life-cycle cost analysis, at the melded electrical rate of $0.12/kWh, the total present value (PV) energy savings amount to $4,621, with a total PV life-cycle cost savings of $9,843 including maintenance. At this electricity cost, simple payback occurs at 2.3 years of operation.
• During the PAR 38 lamp comparison, museum staff responded favorably to the visual results, and although there was no effort to inform the viewing public about the LED use, there also was no reaction, positive or negative, from visitors about the lighting. The museum plans to continue to use LEDs in exhibits where they produce desired visual results.
• Accelerated fading tests on a variety of sensitive museum materials showed that warm-color white LED lamps produce no worse deterioration than filtered halogen lamps at equivalent lux-hours of exposure. However, it is always important to consult with conservators and curators on unique or especially critical museum materials.

The report is available for download at www.ssl.energy.gov/gatewaydemos_results.html. This lighting demonstration is one of many DOE GATEWAY demonstrations that showcase high-performance LED products for general illumination.

Cree Sets New R&D Performance Record with 254 Lumen-Per-Watt Power LED
Cree, Inc. has released a barrier-breaking 254 lumen-per-watt white R&D power LED. This milestone exceeds Cree’s previous R&D industry record of 231 lumens per watt and demonstrates Cree’s continued commitment to accelerate the adoption of LED lighting.

Elements of Cree’s innovative SC³ Technology Platform, available today in Cree XLamp LEDs, enable this record-breaking R&D result. The SC³ Technology Platform is built upon Cree’s advanced silicon carbide technology, features advancements in LED chip architecture and phosphor, and boasts a new package design to deliver the most advanced LED components in the industry.

Cree reports that the LED efficacy was measured at 254 lumens per watt, at a correlated color temperature of 4408 K. Standard room temperature, 350 mA testing, was used to achieve the results.

“The latest innovation from our R&D labs is another game changer for the industry,” said John Edmond, Cree co-founder and director of advanced optoelectronics. “The core of the Cree R&D culture is a relentless focus on innovation that ultimately drives LED adoption. Higher-performance LEDs can enable new and better LED-based applications and drive down the solution cost of LED designs.”

Event Listings

4/24 - 4/26, SAE 2012 World Congress, Detroit, MI

The SAE 2012 World Congress theme, Get Connected, represents the new and diverse connections that will drive significant advancements in the auto industry of tomorrow. Not only does the theme symbolize literal connections, such as those between vehicles, infrastructure, the Internet, and the nation's electrical grid, but also demonstrates the most fundamental of connections; the connections and relationships between engineers who are developing the next generation vehicle technology.

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