The Lutron RAFT The CLEAR Design Ride

1. The Lutron RAFT The CLEAR Design Ride (

2. Design Phase 2Lighting InvestigationThe LED

3. Why LED?

4. What is an LED? A LED (or Light Emitting Diode) is a semiconductor that produces light when electricity runs through it

5. What is an LED? An LED is powered and controlled by a driver The driver controls the amount of current or voltage that runs through the LED, therefore controlling the light output + Driver LED

6. What is an LED? The driver controls the quality and range of an LED’s dimming performance

7. LED Fixture + + Driver Housing LED Light Engine **With some fixture manufacturers, you can specify the type of driver you would like in your fixture. LED Fixture

8. What is an LED? The dimmer controls the driver, which controls the LED!

9. The driver and the dimmer MUST be compatible! Wiring Electrical Signal

10. LEDs are energy efficient, last for 50,000+ hours, have 90+ CRI options, and come in a variety of color temperatures. BUT.. • They can be difficult to control, there are few standards regarding performance, and sometimes, the customer’s expectations are not met!

11. LED Dimming Challenges LEDs often have poor dimming performance if they are not properly matched with the right dimmersor if they have poor quality drivers. Watch out for: • Flicker • Pop-on • Drop-out • Dead-travel • Audible Noise

12. LED Dimming Challenges • New luminaire manufacturers constantly entering the market • Many different ways to control LEDs • Not all LEDs perform as expected

13. LED Dimming Challenges - Non LED Rated Dimmer • Minimum number of lamps: • Most incandescent dimmers have a 25-40 watt minimum • This may be difficult to reach with LEDs • If you do not hit the minimum load, you can experience poor dimming performance • Maximum number of lamps: • The simple “incandescent dimmer” calculation, does not apply to the LED Load Type • 600 watt dimmer / 10 watt LED = 60 LEDs per dimmer: WRONG! • Start-up inrush and repetitive current increases draw

14. LED Dimming – LED Rated Dimmer • Minimum number of lamps: • The minimum load can be much lower • This will depend on the lamp you choose, but you may only need 1 or 2 lamps to reach the minimum load • Maximum number of lamps: • The simple calculation will work: • Example: • Dimmer is rated for 600W Incandescent/Halogen, and 150W Dimmable LED lamps • 150W LED Dimmer / 10W LED = 15 LEDs

15. LED Dimming Challenges Remember, The Square Law of Dimming • Dimming range varies greatly fixture to fixture • Some only dim to 20%, others dim to 1% • Incandescent lamps dim to below 1% • Keep in mind measured light vs. perceived light • Use caution when comparing and selecting products • There is a big difference between 1% dimming and 10% dimming • 20% measured = 45% perceived

16. How do I dim a LED?

17. How do I dim a LED (well)?

18. LED Lighting Control Performance, Factors to Consider • Color Temperature (Ex: 2700 degrees Kelvin) • Dim-to-Warm • CRI • Quality of Dimming Curve • Color Spectrum Change

19. Managing Expectations With LEDs When specifying LEDs, know the answers to these questions in order to match expectations with performance: • What type of LED product am I using: lamp or fixture? • What is the dimming range and performance of the lamp/fixture? • What is the minimum and maximum number of lamps/fixtures that can be connected to one dimmer? • What type of control does the LED operate on?

20. The Five “LED Scenarios” of Today, for a Residential RadioRA2 Dealerand “What to Do” in each scenario

21. Scenario 1: “Best Case” Lutron Light Fixture Lutron LED Driver Proper Lutron Control + + Guaranteed compatibility, 1% - 100% “high performance dimming” and guaranteed light quality without flicker, flash, shimmer, “dead travel,” and “pop-on!” Typically New Construction

22. “What to do” – in Scenario 1 • Specify Lutron Light Fixture - www.lutron.com/fixtures • Visit www.lutron.com/leds • On the right panel, under “Related Products,” access “Hi-Lume A Series LED Driver” • On the right panel, under “Related Resources” access “Report Card for 2-Wire Forward Phase Control” - Download Document

23. “What to do” – in Scenario 1 • Scroll towards the bottom of the document, (Page 18 and 19 of the PDF), to access report cards, for residential Lutron dimmers and systems • Identify quantity of drivers/fixtures, which can be controlled, by the “appropriate” Phase Dimmer (In RadioRA2: RRD-10ND, RRD-6NA, RRD-6CL)

24. Lutron Finire LED Downlight, with Lutron Driver Guaranteed light quality and dimming performance 95+ CRI, 2700K Xicato LED Light Engine, Lutron A-Series Hi-Lume Driver

25. Scenario 2: “Very Good!” Non Lutron Light Fixture Lutron LED Driver Proper Lutron Control + + Guaranteed compatibility, 1% - 100% “high performance dimming” without flicker, flash, shimmer, “dead travel,” and “pop-on!” Typically New Construction

26. “What to do” – in Scenario 2 • To “verify” that your LED fixture, is using a Lutron Hi Lume A Series LED Driver, visit our “High-Performance Fixture” list at www.lutron.com/findafixture • Choose manufacturer • Identify fixture – if fixture is “on the list” – PRESTO! You are working with a Hi Lume A Series LED Driver from Lutron!* • *Please double check the fixture specification sheet, for appropriate fixture model number for the Lutron driver, along with supported control type • [Note: most fixtures will probably include a 3-wire/L3D driver, meaning that on the following slide they should look for a different Report Card, and will have to use 3-wire Ra2 dimmers, ALONG WITH AN EXTRA WIRE]

27. “What to do” – in Scenario 2 • Visit www.lutron.com/leds • On the right panel, under “Related Products,” access “Hi-Lume A Series LED Driver” • On the right panel, under “Related Resources” access “Report Card for 2-Wire Forward Phase Control” - Download Document

28. “What to do” – in Scenario 2 • Scroll towards the bottom of the document, (Page 18 and 19 of the PDF), to access report cards, for residential Lutron dimmers and systems • Identify quantity of drivers/fixtures, which can be controlled, by the “appropriate” Phase Dimmer (In RadioRA2: RRD-10ND, RRD-6NA, RRD-6CL)

29. Scenario 3: “May be ok… May not be ok…” Non Lutron Light Fixture Non Lutron LED Driver Proper Lutron Control + + Compatibility and performance determined based on Lutron Testing Driver and Fixture may or may not work well, with specific Lutron dimmers Typically New Construction, Possible Re-Model If possible – “nudge” customer to Scenario 1 or 2!

30. “What to do” – in Scenario 3 • To “verify” that your LED fixture, has been tested by Lutron and that it has proven to be a high performance LED dimming fixture, with specific Lutron controls, visit www.lutron.com/leds • Under “Related Resources”- access “LED Product Selection Tool” • Chose “Manufacturer” • Scroll down to find the Light Fixture in question / If listed – see next slide. If not listed – email leds@lutron.com – Ask: “Has Lutron tested this fixture by chance?”

31. “What to do” – in Scenario 3 • Find the “Fixture in Question” – on the List! • Access “LED Report Card” – for that specific fixture

32. “What to do” – in Scenario 3 • Scroll to the Lutron control, which you seek to use (the control must be on the Report Card, tested with that specific fixture) • Review dimming range and Min / Max # of fixtures. In this example, the RRD-10ND can dim 1 – 15 of these fixtures (no Derating) / Low-End 31% Perceived Light, High-End 93%. Not ideal….

33. Scenario 4: “May be ok… May not be ok…” Edison Based Screw-In LED Bulb Lutron Control Featuring Internal LED Driver + BY FAR, the most common scenario, in Residential Retrofit LED Dimming Compatibility and performance determined based on Lutron Testing Lamp with integral driver, may or may not work well, with specific Lutron dimmers

34. “What to do” – in Scenario 4 • To “verify” that your LED bulb, has been tested by Lutron and that it has proven to be a high performance dimmable LED bulb, with specific Lutron controls, visit www.lutron.com/leds • Under “Related Resources”- access “LED Product Selection Tool” • Chose “Manufacturer” • Scroll down to find the LED bulb in question / If listed – see next slide. If not listed – email leds@lutron.com – Ask: “Has Lutron tested this bulb by chance?”

35. “What to do” – in Scenario 4 • Find the “Bulb in Question” – on the List! • Access “LED Report Card” – for that specific bulb

36. “What to do” – in Scenario 4 • Scroll to the Lutron control, which you seek to use (the control must be on the Report Card, tested with that specific fixture) • Review dimming range and Min / Max # of bulbs. In this example, the RRD-10ND can dim 1 – 15 of these bulbs (no Derating) / Low-End 31% Perceived Light, High-End 93%. Not ideal

37. What to pay attention to on “LED Report Cards..” Fixture Minimum / Maximum (Reminder: No Derating with LEDs) Measured Dimming Range (Low-End, High-End) Perceived Low End (very important) Comments!

38. Compatibility Lists Compatible LED Lamps

39. Scenario 5: Low Voltage Retrofit “Not ideal….” Lutron Control • LED bulb (often MR16) • Installed, into existing switch leg, with previously installed MLV or ELV transformer • Lamp & Transformer “Share,” the role of LED Driver + • The most challenging scenario, in Residential Retrofit LED Dimming • Depends on Lutron Testing the LAMP, paired with a specific TRANSFORMER, with a specific Lutron dimmer • Furthermore, with a specific number of lamps per transformer • The Lamp may work well, with a specific Lutron dimmer, but only when paired with that specific transformer! • COMING SOON! White Paper on this topic (www.lutron.com/leds)

40. Scenario 5: Low Voltage Retrofit “Not ideal….” • Due to the fact that “Scenario 5,” presents a significant challenge – including two separate variables (lamp and transformer), there are only a handful of MR16 LEDs that have been tested by Lutron, for proper dimming performance • Furthermore, these MR16s are specified alongside “specific” transformers and of course, paired with specific Lutron dimmers

41. Scenario 5: Low Voltage Retrofit “Not ideal….” • This is a rather “unforgiving” Scenario / if one variable is off, performance could be affected

42. Scenario 5: Low Voltage Retrofit “Not ideal….” • In order to identify these lamps, visit www.lutron.com/leds • Under “Related Resources”- access “LED Product Selection Tool” • Chose “Fixture/Lamp Type” - “MR 16 Lamp” • View limited selection of Report Card Results

43. Scenario 5: Low Voltage Retrofit “Not ideal….” • Pay close attention to MR 16 “Report Card” “fine print” • “Test results valid only with a GE Ligtech LET 60LW 66938 transformer and 1 lamp per transformer”

44. Here is your “typical” Scenario 5 • Replacement MR16 LED lamps, recently installed, at the customer’s house • “Legacy” transformer remains on the switch leg – this piece was installed “long long ago” • Neither transformer nor the lamp has been tested, furthermore, they have not been tested as compatible with each other, along with a Lutron dimmer • Typically, the existing transformer (MLV or ELV), will require a higher load, for dimming, than the replacement LED provides

45. Challenging “Scenario 5” Retrofit Option • Pick an MR 16 lamp and transformer combination, tested and found compatible, from the LED Selection Tool • Replace MR16 lamps with tested MR 16 lamps • Replace existing transformer with tested transformer • …along with proper configuration (# of lamps per transformer) • Install appropriate dimmer, per the Report Card

46. The Dimming Technologies • Line Voltage Phase Dimming • RadioRA2 Dimmer • Maestro Dimmer • Diva Dimmer • Low Voltage Direct Digital Dimming • Eco System

47. Forward Phase Dimming (AKA “Leading Edge”) • 2-wire Non-Neutral or 3-wire Neutral • Typically Triac based (sometimes FET based with Neutral) • Traditionally used with incandescent, halogen, and MLV dimmers • Most common dimmer – this is the same control signal the first solid-state dimmer sent Sends the dimming signal and powers the fixture Dimmed Hot Neutral

48. Reverse Phase (AKA “Trailing Edge”) • 3-wire Neutral • Always FET based • Traditionally used with ELV transformers Sends the dimming signal and powers the fixture Dimmed Hot Neutral

49. Phase Dimming & LEDs • Forward Phase “Triac Based” (RRD-10ND, RRD-6CL) • 2-Wire, Non Neutral Dimmer: • Traditional Incandescent / Halogen / MLV Dimmer Circuit (not ideal for LEDs) (RRD-6D, RRD-10D) • NEW CL Dimmer Circuit (RRD-6CL) • Does a better job “handling” the common LED challenges of repetitive inrush current and tiny load signal, when not in use, due to specialized circuitry • Recommended choice when no testing results are known • Recommended choice for the “common” store bought Screw-In, Edison Base, Dimmable LED Lamp. That said, performance may vary. Set Low-End Trim to mitigate “flicker” at Low-End of Dimming Curve • 3-Wire, Neutral Dimmer: (“Decent” LED dimmer) (RRD-10ND)

50. Phase Dimming & LEDs • Reverse Phase or Adaptive “FET” Based (RRD-6NA) • 3-Wire, Neutral Dimmer (“Decent “ LED dimmer, only when Neutral is available) • Reverse Phase FET: With LED Drivers that are similar to ELV transformers • Forward Phase FET: With many standard LED Drivers and LED bulbs