08/2014 Technical application guide PrevaLED Flat AC and Flat AC L-EM light engines Light is OSRAM

Transcription

1 08/2014 Technical application guide PrevaLED Flat AC and Flat AC L-EM light engines Light is OSRAM

2 PrevaLED Flat AC light engines Contents Contents 1 Introduction System overview Ordering information Nomenclature 04 6 Lifetime and thermal behavior Cooling Flux as a function of temperature Lifetime as a function of temperature 14 2 Optical considerations Light distribution Light modulation Homogeneity Color temperature Color rendering Spectral distribution 09 7 Mechanical considerations Outline drawings D drawings Mechanical protection of the light engine Touch protection accessory Protection from corrosion Mounting 16 3 Ingress protection 10 8 Emergency and stand-by lighting 17 4 Electrical considerations Wiring information Insulation requirements Inrush current and system installation Electrostatic discharge (ESD) Controllability Power as a function of voltage 11 9 Norms and standards 18 5 Thermal considerations Thermal power values Thermal power over voltage Thermal shutdown TIM and other accessories t c point location and temperature measurement 13 Please note: All information in this guide has been prepared with great care. OSRAM, however, does not accept liability for possible errors, changes and/or omissions. Please check or contact your sales partner for an updated copy of this guide. 2

3 PrevaLED Flat AC light engines Introduction 1 Introduction 1.1 System overview The brightness levels of today s LEDs are opening the door for the use of LEDs in general lighting applications that require high lumen output levels. Building an LED-based luminaire poses a new set of technical challenges, among them new optical requirements, providing adequate thermal management for stable operation and dealing with the ever-improving performance of LEDs. Nevertheless, LED technology also offers an unknown wealth of possibilities, providing access to unprecedented levels of performance and new ways of integration. OSRAM s PrevaLED family of LED light engines addresses the challenges of LED-based lighting while providing users with great performance and fl exibility at the same time. Enabled by the application of LED technology, PrevaLED is aiming to push the envelope of what is possible in terms of performance and simplicity. The PrevaLED Flat AC series of light engines is ideally suited for use in highly diffuse wall-mounted and ceiling-mounted luminaires in decorative, hospitality or domestic applications. The PrevaLED Flat AC light engines provide several specifi c benefi ts for these applications: With the LED sources and the electronic control circuitry placed on the same board and packaged into a unique compact design, they offer an integrated system solution. A separate LED circuit, not used during normal operation, can be run on a local battery pack to enable the emergency lighting functionality. Little design-in effort is required due to the integration of the electronic control circuitry into the light engine, offering a new level of simplicity. They provide high performance in terms of both the complete system effi ciency and the quality of light, enabling the design of ultra-slim, diffuse luminaires. They allow for the simple and fl exible application of LED technology in existing and new installations. A touch-safe accessory can be purchased along with the light engine to allow for the safe operation in luminaires that can be opened by the end user. The PrevaLED Flat AC series is available in four different versions: On/off version L-EM version for emergency lighting applications with local battery packs Master version with integrated presence and daylight sensor Slave version to be controlled by the master version Each version is available with a diameter of 170 mm or 240 mm and a color temperature of K or K. All PrevaLED Flat AC light engines have a minimum color reproduction of R a > 80. PrevaLED Flat AC 170 (left) and 240 (right) PrevaLED Flat AC 170 L-EM 3

4 PrevaLED Flat AC light engines Introduction 1.2 Ordering information PrevaLED Flat AC Product reference Product number [EAN10] Product number [EAN40] Color tem perature [K] Luminous flux [lm] On/off version PL-FLAT-AC-G V PL-FLAT-AC-G V PL-FLTP 170 (touch protection accessory) PL-FLAT-AC-G V PL-FLAT-AC-G V PL-FLTP 240 (touch protection accessory) L-EM version PL-FLAT-AC-G V L-EM PL-FLAT-AC-G V L-EM PL-FLTP 170 L-EM (touch protection accessory) PL-FLAT-AC-G V L-EM PL-FLAT-AC-G V L-EM PL-FLTP 240 L-EM (touch protection accessory) Master version PL-FLAT-AC-G V MA PL-FLAT-AC-G V MA PL-FLTP 170 MA (touch protection accessory) PL-FLAT-AC-G V MA PL-FLAT-AC-G V MA PL-FLTP 240 MA (touch protection accessory) Slave version PL-FLAT-AC-G V SL PL-FLAT-AC-G V SL PL-FLTP 170 SL (touch protection accessory) PL-FLAT-AC-G V SL PL-FLAT-AC-G V SL PL-FLTP 240 SL (touch protection accessory) Nomenclature PL-FLAT: PrevaLED Flat family AC: AC-capable ( V, Hz) G1: Generation : 1500 lm 830: CRI + CCT = > K 230V: 230 V rated voltage L-EM = Local emergency (optional feature) PL-FLAT-AC-G V L-EM 4

5 PrevaLED Flat AC light engines Optical considerations 2 Optical considerations PrevaLED Flat AC light engines can be applied in diffuse wall-mounted and ceiling-mounted luminaires without the need for further optical accessories. 2.1 Light distribution The light distribution of PrevaLED Flat AC light engines is shown below. They create a beam angle of 115 FWHM (full width at half maximum). Light distribution curve C Light modulation The AC technology of the PrevaLED Flat AC results in a light modulation with a frequency of 100 Hz. Capacitors are placed into the PrevaLED Flat AC module to reduce the modulation of the light output. The resulting light modulation has a depth of 30 %. The luminous fl ux of the LED module never drops below 70 %. 5

6 PrevaLED Flat AC light engines Optical considerations 2.3 Homogeneity To get an overview of the resulting homogeneity in slim luminaire designs, the following images show the results in illuminance and color appearance at different distances between the light engine and the diffuser. The images have been obtained through simulation, assuming an ideal diffuse cover. The simulation has been performed with a 170-mm-diameter PrevaLED Flat AC module and a 200-mm-diameter diffuser cover. The following image shows the simulation set-up. Simulation set-up Simulation results D = 15 6

7 PrevaLED Flat AC light engines Optical considerations D = 25 D = 35 7

8 PrevaLED Flat AC light engines Optical considerations D = 45 D = 55 The simulation results show that the homogeneity values do not further improve when the distance between the PCB and the ideal diffuser layer is 45 mm or more. OSRAM provides mechanical (3D fi les) and optical simulation data (ray fi les) to support customized refl ector designs. Mechanical fi les can be downloaded at Ray fi le data are available at via the Tools & Services section. 8

9 PrevaLED Flat AC light engines Optical considerations 2.4 Color temperature The PrevaLED Flat AC series is currently available in K and K. The color coordinates within the CIE 1931 color space are given below. Initial color values of the CCT 3000 K 4000 K 1) C x C y Within each available color temperature, the PrevaLED Flat AC series provides a maximum color variation of three threshold value units (MacAdam steps). The following diagram shows these threshold values within the CIE 1931 color space. Color coordinates 2.5 Color rendering PrevaLED Flat AC light engines provide a color rendering index (CRI) of > 80. The table below shows the individual R a values from R1 to R14 for the available color temperatures. R a values General CRI Dusky pink Mustard yellow Yellowish green Light green Turquois Azure Aster violet Lilac violet Red, saturated Yellow, saturated R a Green, saturated Blue, saturated Pink, skin color Leaf green R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 CCT = 3000 K CCT = K 1) y step MacAdam ellipses 3000 K 2.6 Spectral distribution The typical spectral distribution of PrevaLED Flat AC light engines is shown in the following diagram. Wavelength spectrum K 1) Relative spectral emission [*100 %] CCT = 4000 K 1) at t c = 25 C CCT = 3000 K at t c = 25 C x Wavelength [nm] 1) All data for K are preliminary. 9

10 PrevaLED Flat AC light engines Ingress protection Electrical considerations 3 Ingress protection PrevaLED Flat AC light engines have no ingress protection rating. Please ensure that the housing of your luminaire provides the IP protection required for your application. To achieve an ingress protection rating of IP20, it is possible to combine PrevaLED Flat AC light engines with the available touch protection accessory. For further information, please have a look at the technical application guide IP codes in accordance with IEC 60529, which can be downloaded at 4 Electrical considerations 4.1 Wiring information PrevaLED Flat AC light engines can be directly connected to mains voltage ( V, 50/60 Hz). The used input clamps can handle solid or fl exible wire with a crosssection of 0.5 to 1.5 mm 2 (AWG20 16). The use of solid wire is recommended. Wire preparation 6 8 mm ( inch) Please insert the wires in 0 orientation to the PCB. Notes: The connector is designed for three poke-in and release cycles. Due to the fact that you are dealing with mains voltage, you must not hot-plug the light engine. The installation of LED light engines needs to be carried out in compliance with all applicable electrical and safety standards. Only qualifi ed personnel should be allowed to perform installations. Solid wire: Plug directly. Flexible wire: 1. Lightly press the push button of the connection clamp. 2. Insert the fl exible wire. To press/release the clamps, please use a small screwdriver or a Wago operating tool type

11 PrevaLED Flat AC light engines Electrical considerations 4.2 Insulation requirements The PrevaLED Flat AC module has reinforced insulation towards the back of the PCB. The module has no insulation measures to the electronic components on the top side of the module. When the light engines are used in protection class I luminaires, the luminaire manufacturer has to ensure basic insulation of the module and all live parts during the installation of the luminaire. It is also possible to use the optional touch protection accessory in order to provide the basic insulation of the module. Please refer to chapter 7.4 for additional information on the available touch protection accessory. When the light engines are used in protection class II luminaires, the manufacturer has to ensure basic insulation of the module and all live parts during the installation of the luminaire. Moreover, it is necessary to provide additional insulation in the area of the input connector. Between connection wires with basic insulation and touchable metal parts or the heat sink, a second insulation layer is required. Within the module, the creepage and clearance distances (to the mounting points and the edge of the module) for reinforced insulation are fulfi lled. 4.5 Controllability Due to the integrated drive electronics, a good compatibility with all available phase-cut dimmers cannot be ensured. 4.6 Power as a function of voltage The nominal voltage of the light engine is 230 V. The operating range is V. For voltage variations, the light engine is tested according to IEC/EN Please note that the power of the light engine changes over the voltage range. Please have a look at the diagram below for the power as a function of voltage. PrevaLED Flat AC 1500 lm % Pel [W] Phi [lm] Pth [W] Keep-out areas for creepage and clearance distances Voltage [V] 4.3 Inrush current and system installation Due to their electronic construction, the PrevaLED Flat AC light engines have a minimum inrush current. In system installations, the number of light engines which can be attached to one circuit is limited by the voltage drop regulations and the used cross-section of the connecting wire. 4.4 Electrostatic discharge (ESD) PrevaLED Flat AC light engines fulfi ll the requirement of the immunity standard IEC/EN Please note that an electrostatic discharge of greater than 2 kv HBM can cause damage, ranging from performance degradation to complete device failure. OSRAM recommends that all PrevaLED Flat AC light engines are handled and stored using appropriate ESD protection methods. 11

12 PrevaLED Flat AC light engines Thermal considerations 5 Thermal considerations The proper thermal design of an LED luminaire is critical for achieving the best performance and ensuring the longest lifetime of all components. Due to the high effi cacy of PrevaLED Flat AC light engines, only a partial amount of the introduced electrical power has to be dissipated through the back of the light engine. The thermal power that has to be dissipated for PrevaLED Flat AC light engines is given below. 5.4 TIM and other accessories Due to the high effi ciency of the PrevaLED Flat AC modules, the use of a thermal interface material (TIM) is not required. By using a TIM, an even better thermal connection of the light engine to the heat sink can be achieved. Note: A thermal design must always be confi rmed by performing a thermal measurement in steady-state condition. 5.1 Thermal power values Product reference Typical Maximum Max. allowable thermal thermal thermal power power resistance [W] 1) [W] 1) R th [K/W] 2) PL-FLAT-AC-G V PL-FLAT-AC-G V PL-FLAT-AC-G V PL-FLAT-AC-G V ) Value measured at the t c point at a reference temperature (t r ) of 70 C. 2) Value measured at the rear of the luminaire at an ambient temperature of 25 C. 5.2 Thermal power over voltage Please note that the thermal power of the module is related to the line voltage. Please refer to the diagram in chapter Thermal shutdown A thermal protection feature serves to achieve the best possible lifetime of the module and to protect it from damage by overheating. The characteristics of the thermal protection are shown in the following diagram. Pel [%] Area of active thermal protection not suitable for permanent operation t c [ C] 12

13 PrevaLED Flat AC light engines Thermal considerations 5.5 t c point location and temperature measurement The t c point is the location to check if the chosen cooling solution (heat sink and TIM) is suffi cient to ensure the LED module performance. The t c point is located on the top side of the light engine (see schematic drawings below). Examples of suitable thermocouples: K-type thermocouple with miniature connector t c point Different thermocouples Illustration Description Temperature range [ C] PVC-insulated thermo couple Location of the t c point (on/off and L-EM version) Note: t c according to IEC stands for case temperature, which is the highest permissible temperature measured at the t c point. The t c point is the location where the t c is measured (see drawings above). A correct temperature measurement can, for example, be performed with a thermocouple. Use a thermocouple that can be glued onto the light engine. Make sure that the thermo couple is fi xed with direct contact to the t c point. PFA-insulated thermo couple To ensure a direct contact between the thermocouple and the PCB, it is recommended to either glue the thermocouple onto the PCB or solder it to the t c point. You can, for example, use an acrylic glue, such as Loctite Mounting of a thermocouple Mounting of a thermocouple (close-up) Note: Please keep in mind that you need a direct contact between the thermocouple and the PCB. 13

14 PrevaLED Flat AC light engines Lifetime and thermal behavior 6 Lifetime and thermal behavior 6.1 Cooling PrevaLED Flat AC light engines do not necessarily need to be attached to a heat sink. Depending on the application, however, a suitable cooling solution (e.g. a heat sink or luminaire housing) might be needed to keep the t c point temperature below the allowed maximum and therefore ensure a safe and reliable operation. 6.2 Flux as a function of temperature The luminous fl ux of PrevaLED Flat AC light engines depends on their temperature. 100 % of the luminous fl ux is achieved at the reference temperature of 75 C (t r = 75 C). This temperature has to be measured at the t c point. If the reference temperature increases, the light output decreases. The luminous fl ux changes in relation to the reference temperature according to the following diagram. Flux as a function of temperature Flux [lm] Pel [W] Phi [lm] Pth [W] Lifetime as a function of temperature For the defi nition of the lifetime of a light engine, please refer to IEC/PAS 62717, where the following types are defi ned (examples): L0C10 is the lifetime where the light output is 0 % for 10 % of the light engines. L70F50 is the lifetime where the light output is 70 % for 50 % of the light engines. F value includes reduction of lumen output over time including abrupt degradation (fl ux = 0). L70B50 is the lifetime where the light output is 70 % for 50 % of the light engines. B value includes only gradual reduction of lumen output over time (not the abrupt degradation of fl ux). If the performance temperature (t p ) is maintained, PrevaLED Flat AC light engines have an average lifetime of hours (L70B50). The maximum temperature measured at the t c point must not exceed 85 C. Note: Higher temperatures lead to a shorter lifetime of the PrevaLED Flat AC light engines. Moreover, the failure rate will also increase. The table below shows the lifetime of PrevaLED Flat AC light engines according to IEC/PAS t c [ C] PrevaLED Flat AC 240 mm L70B10 L70B50 L80B10 L80B50 L0C10 L0C50 L70F10 L70F50 L80F10 L80F50 Lifetime [h] at t p = 45 C * * 50000* * Lifetime [h] at t p = 55 C * * 50000* * Lifetime [h] at t p = 65 C * * 50000* * Lifetime [h] at t p = 75 C * 50000* * Expected to be higher PrevaLED Flat AC 170 mm L70B10 L70B50 L80B10 L80B50 L0C10 L0C50 L70F10 L70F50 L80F10 L80F50 Lifetime [h] at t p = 45 C * * 50000* 50000* * * Lifetime [h] at t p = 55 C * * 50000* 50000* * Lifetime [h] at t p = 65 C * * 50000* * Lifetime [h] at t p = 75 C * * 50000* * * Expected to be higher 14

15 PrevaLED Flat AC light engines Mechanical considerations 7 Mechanical considerations 7.1 Outline drawings The following schematic drawings provide further details on the dimensions of PrevaLED Flat AC light engines. For 3D fi les of the light engines, please go to All figures in mm All figures in mm Outline drawing of on/off version Outline drawing of L-EM version 7.2 3D drawings PrevaLED Flat AC 170 PrevaLED Flat AC 170 L-EM PrevaLED Flat AC 240 PrevaLED Flat AC 240 L-EM 15

16 PrevaLED Flat AC light engines Mechanical considerations 7.3 Mechanical protection of the light engine PrevaLED Flat AC light engines should not be exposed to strong mechanical stress. Please apply force only to the dedicated mounting positions. Strong mechanical stress can lead to irreversible damage of the light engine. kg 7.5 Protection from corrosion To protect electronic parts (such as LEDs) from corrosion, a corrosive atmosphere around the components has to be avoided. In case of LEDs, H 2 S, for example, is a highly corrosive substance which can lead to a drastically shortened product lifetime. The source for H 2 S are sulfur-cross-linked polymers, such as rubber. To ensure the absence of H 2 S, it is recommended to use peroxide-cross-linked materials, which are available on the market as an alternative to sulfurcross-linked versions. Avoidance of corrosion by moisture has to be ensured by the appropriate protection of the luminaire housing (see chapter 3 Ingress protection ). Note: Please do not touch or mechanically stress any com - ponent of the light engine. This could damage the light engine. 7.4 Touch protection accessory To protect the light engine from contact and to provide a basic insulation, an additional touch protection accessory is available for PrevaLED Flat AC light engines. 7.6 Mounting To mount a PrevaLED Flat AC light engine (with or without touch protection accessory), use M4 cylinder head screws according to DIN 912 or ISO The torque is 1.0 (±0.5) Nm. Note: In combination with the touch protection accessory, a PrevaLED Flat AC light engine has reinforced insulation to the back and basic insulation to the top. 3D files of the touch protection accessory Mount PrevaLED Flat AC from the top It is also possible to mount the touch protection accessory after the PrevaLED Flat AC light engine has been screwed to the heat sink/luminaire. Please refer to the insulation requirements in chapter 4.2. PL-FLTP 170 (left) and PL-FLTP 240 (right) PrevaLED Flat AC with touch protection PL-FLTP 170 L-EM (left) and PL-FLTP 240 L-EM (right) Note: Due to the regulations of IEC , the touch protection accessory cannot be removed without destruction. 16

17 PrevaLED Flat AC light engines Emergency and stand-by lighting 8 Emergency and stand-by lighting For applications requiring emergency or stand-by lighting, the PrevaLED Flat AC series offers a local emergency version that allows the connection of a local battery system. This version carries an additional, separate LED circuit for operation on local battery packs. The following images show the difference between the on/off version and the local emergency version. The diagrams below show the typical fl ux and forward voltage of the emergency lighting circuit as a function of current. Flux as a function of current Flux [lm] Flux additional LEDs for emergency lighting Current [ma] On/off version L-EM version Additional connector for local battery pack Forward voltage as a function of current Vf [V] Vf Notes: Please observe the polarity at the emergency input. Do not invert + and -. Do not connect mains voltage to the emergency input clamps. The emergency lighting circuit can handle an input current of 25 ma to 800 ma. The resulting voltage range extends from 2.2 V (at 25 ma, 85 C) to 3.5 V (at 800 ma, 0 C). The emergency lighting circuit has double/reinforced insulation against mains voltage. The emergency lighting circuit has to be connected to a current source (do not use a voltage source). The PrevaLED Flat AC L-EM version is not compatible with central battery systems Suppliers of local battery packs Current [ma] Local battery packs can, for example, be obtained from the suppliers listed below. Alvit ELP Emergency Lighting Products ERC Highlight Harvard Mackwell Electronics 17

18 PrevaLED Flat AC light engines Norms and standards 9 Norms and standards Safety: IEC/EN Photobiological safety: IEC/EN Risk group 1 Electromagnetic compatibility: EN CISPE15* IEC/EN IEC/EN IEC/EN Ingress protection: Approval: Without touch protection: XX With touch protection: IP20 CE, VDE*, ENEC*, VDE EMC* 10 * Currently in preparation 18

19 08/14 OSRAM S-GI MK EM Subject to change without notice. Errors and omissions excepted. OSRAM GmbH Head offi ce: Marcel-Breuer-Strasse Munich, Germany Phone Fax