User Manual - TRC Electronics, Inc.
Contents
1. Rev 1 1 September 28 2009 TRC ELECTRONICS INC 1 888 612 9514 A www trcelectronics com roal a NOTE 3 Mounting Clip Instructions 7 Fe C ROAL RLDD TROPO Series User Manual I TRC ELECTRONICS INC Selling power supply solutions since 1982 Introduction The Tropo series of LED drivers is equipped with a Universal Mounting Clip design The customer can decide which of the six available mounting locations are most suitable for the particular application and install the mounting feet at the time of installation The Tropo driver is shipped from the factory with 2 clips which should be Suitable for most installations If additional or replacement clips are required please contact ROAL Electronics Prior to installation of the mounting clips determine which of the six locations to attach the clips to Clip Installation 1 Position the 2 small feet of the clip into the indentations on the bottom of the driver 3 With a finger at the base of the clip apply gentle pressure upward on the clip 2 Rotate the upper part of the clip up towards the larger indentation on the top of the driver 4 Until the clip Snaps into place Clip Removal To remove the clip use a small pair of pliers on the mounting clip flange and twist away from you This will disengage the feet from the case and free the clip Be careful not to apply excessive outward force as this may damage the driver pl2. Selling power supply solutions since 1982 Ha Introduction This application note has been written to assist with selection of ROAL Tropo Series drivers Since there are many configurations of LED designs care must be taken to ensure that the operation window for the Tropo series is not violated It is apparent that when the input of Tropo is dimmed with a line voltage dimmer the output current is adjusted As the output current reduces so does the forward voltage of the LED s connected to the output Care must be taken when selecting a Tropo driver to ensure the output voltage is always within the operating voltage range This includes when being dimmed This application note will address the operation of Tropo drivers with respect to the output voltage operation range It is suggested to review Roal Tropo Application Note 1 Line Voltage Dimming of Tropo Drivers prior to this application note Tropo Output Voltage Range Tropo drivers include 28 standard models The output of the driver is constant current regulated to a factory set point The drivers also have a specified output voltage operating range that must be met under all conditions including when being dimmed Figure 1 is a table that summarizes the models the output current setpoint and the operating voltage range for each model This range is identical for 120VAC and 240VAC drivers ee ar ar a a H or L a vdc RLD RLDDOI5X 350 eee e e S RLDD015X 600 8
3. 12 60 RLDD015X 800 8 12 80 RLDD015X 900 l0 16 900 RLDD015X 900L 8 12 990 RLDD015X 1000 10 16 1000 RLDD015X 1200 10 RLDD015X 1250 8 RLDD015X 1400 8 n2 i0 0 Bo FIGURE 1 The Vout Min and Vout Max must be met under all conditions of the driver and LED assembly including when being dimmed and when the fixture is at maximum operating temperature Failure to meet this requirement may result in poor performance of the end product Typically this will result in some flicker at the low end of the dimming range The Tropo driver and LED will not be damaged under a low output voltage condition TRC ELECTRONICS INC 1 888 612 9514 mw www trcelectronics com roal NOTE 2 Drivers Output Voltage Range ROAL RLDD TROPO Series User Manual VAT FIC P rac ELECTRONICS INC Selling power supply solutions since 1982 ia LED Voltage rating Unfortunately most LED manufacturers do not provide detailed information regarding the forward voltage at reduced currents and temperatures other then 25C Therefore laboratory measurements and calculations should be made to ensure the minimum voltage is maintained under all anticipated operating conditions Typical number of LEDs supported Each standard Tropo model will perform with a certain number of LEDs in a string The following table Summarizes this data This is based on a broad range of standard individual LEDs from various ma
4. NOTE 1 Line Voltage Dimming of TROPO Drivers yf D z 6 ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 HA Introduction This application note will address the different types of line voltage dimmers which are compatible with the TROPO series of LED drivers Dimmers are available in several basic types from many manufacturers around the world TROPO drivers have been designed to operate with most standard dimmer switches designed for incandescent lighting as well as other types of lighting This application note does not discuss methods of dimming such as 0 10V which do not apply to Tropo drivers Be certain the application and installation complies with the dimmer manufacturer s installation guidelines as well as all local state and federal laws requirements and codes Wire the dimmer to the Tropo driver in accordance with the dimmer manufacturers installation requirements connecting the driver in place of the lighting fixture with the LED connected to the output of the driver NOTE Tropo LED drivers incorporates linear dimming technology not PWM technology As a result each application must be carefully evaluated to ensure it meets the specifications of the end product and the specific LED Basic Dimmer Application A line voltage dimmer is a device that connects between the AC power source and the lighting fixture For LED lighting with a Tropo driver the dim
5. astic case material TRC ELECTRONICS INC 1 888 612 9514 g Www trcelectronics com roal
6. be capable of reducing the conduction angle down to approximately 30 degrees To achieve full output current from the driver the dimmer must be capable of achieving a conduction angle of at least 150 degrees Figure 4 shows the output characteristics of a typical TROPO model comparing the output current versus the conduction angle at various input voltages Typical lo vs Conduction Angle 1 2 100V 200V 03 115V 230V 132V 264V 0o67 o 0 4 0 2 Output Current A Normalized to I Set 0 20 40 60 80 100 120 140 160 VAC Conduction Angle Degrees FIGURE 4 In order to obtain the optimum dimming performance from the TROPO driver ensure the dimmer and application are compatible refer to dimmer considerations for details Failure to meet the minimum load requirements may result in poor dimming performance or flicker especially at low dimming levels TRC ELECTRONICS INC 1 888 612 9514 A www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D z 6 ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 HA Suggested Dimmers TROPO drivers are designed to operate with most standard dimmers However ROAL has performed extensive testing with the dimmers listed below This list of dimmers does not imply any guarantee or warranty of compatibility with a particular application The la
7. ck of dimmers on this list does not imply it is not compatible with TROPO drivers Cooper Aspire Series Part numbers 9530XXX Leviton Illumitech Series Part numbers IPI06 XXX Leviton Trimatron Series Part numbers 6602 X 6681 X 6683 X 6684 X 700 X and 705 X Leviton SureSlide Series Part Numbers 6631 Leviton True Touch Series Part Number 6606 1LM Lutron Skylark Series Part Number S 600 S2 LH In addition the following Electronic Low Voltage ELV dimmers that employ reverse phase control have been tested with TROPO Lutron Nova T Series Part number NTELV 600 Lutron Faedra Part Number FAELV 500 XxX Leviton Acenti Part Number ACEQ6 XXX Leviton Vizia Part Number VZE04 While the above dimmers have been tested by Roal the performance varies greatly Some dimmers are not capable of meeting the wide conduction angles that Tropo can support As a result reduced range of dimming may occur Digital dimmers such as the Lutron Maestro are not supported by TROPO Damage will not occur to the dimmer or the TROPO driver but proper performance is not possible with these dimmers Roal has tested the dimmers with Tropo over a wide variety of system configurations However due to the high degree of variability when dimming all applications of TROPO should be evaluated prior to product release to ensure the end product meets expectations When the installation exceeds 10 fixtures on a single dimmer or distribution lengths e
8. deration that applies to all dimmers is the dimming range The dimming range varies greatly from manufacturer to manufacturer and sometimes from lot to lot of dimmers Some dimmers will operate over a very wide range while others are very small In some cases the minimum amount of conduction time will not permit the driver to reduce the output to 10 of nominal current Similarly the maximum amount of conduction time of some dimmers may result in the output of the driver to be less than the full rated current However Tropo has been designed to operate with most dimmers and operation should be very similar to what would be expected with an incandescent bulb TROPO has been designed to operate with most standard line voltage dimmers of all types Operational characteristics are greatly affected by the dimmer chosen Due to the nature of the triac dimmer being a very uncontrolled specifications vary significantly the end product that uses the Tropo driver must be carefully evaluated to ensure it is compliant with the end products requirements and customer expectations TRC ELECTRONICS INC 1 888 612 9514 g www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D FCO ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 ia TROPO Dimming Specifications TROPO is designed to dim down to 10 of the nominal output current In order to achieve this the dimmer must
9. input voltage versus the output of a Reverse Phase Control dimmer Reverse Phase Control Trailing Edge Chopped AC Input to Driver AC Wall Power 0 50 100 150 200 250 300 350 400 Conduction degrees FIGURE 3 ELV dimmers require power to operate This means that the dimmer must be wired to both sides of the AC input voltage TRC ELECTRONICS INC 1 888 612 9514 A www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D z 6 ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 HA Dimmer Considerations There are a few considerations for line voltage dimmers All triac based dimmers have a minimum operating power level typically around 40W With incandescent bulbs meeting this minimum power requirement was never a concern However with LED lighting multiple drivers fixtures may have to be connected to a single triac based dimmer in order to meet this requirement In most applications a single TROPO will operate properly when connected to a single dimmer but this cannot be guaranteed due to the variability and characteristics of the dimmer Each application should be carefully reviewed to ensure that the minimum power level of the dimmer is achieved If the application consumes less power than the minimum dimmer rating a different dimmer should be chosen or perhaps an ELV dimmer which does not suffer from this limitation Another consi
10. level is raised approximately 20 degrees The e Suggest operation should include Tropo driver will operate at this turning up and than down to set very low conduction angle but the desired setting may have difficulty starting up e Replace with a dimmer with low in this condition end adjustment and set accordingly When the dimmer level is raised e Under some conditions load e If the condition is sever contact very fast the light output appears line LED voltage etc the Roal to discuss the application to reach a level and than reduce output circuit of Tropo may Slightly overshoot slightly when rapidly adjusting the dimming Typically this occurs when the output power is less than the rating of the driver and only when the dimmer is changed rapidly LED dims but does not low enough e Dimmer minimum conduction e If the dimmer is equipped with a angle is gt 30 degrees low end adjustment lower the minimum angle e Change dimmer to a device that dims to lt 30 degrees LED flickers not when dimming e Driver LED is less than the e Change the dimmer to an ELV minimum rating of the dimmer type e Connect additional fixtures to the dimmer circuit to satisfy the dimmer minimum load rating e Check and correct any poor e Poor electrical connections connections TRC ELECTRONICS INC 1 888 612 9514 mw www trcelectronics com roal NOTE 2 Drivers Output Voltage Range ROAL RLDD TROPO Series User Manual VAT FC P rac ELECTRONICS INC
11. mer is connected to the input source of the driver and the LED is connected to the output of the driver The dimmer chops the AC voltage and the driver reacts to this by adjusting the output current supplied to the LED Figure 1 depicts a simple application of the TROPO LED driver Triac Based Dimmer FIGURE 1 The period of the AC cycle during which power is applied to the driver is referred to as the conduction time This is measured in degrees of a half AC cycle or time typically ms A full period would be 180 degrees or 8 3ms for 60Hz and 10ms for 50Hz This application note uses the conduction time in reference to this period TRC ELECTRONICS INC 1 888 612 9514 g www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D z 6 ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 ia Triac Based Dimmers The most common type of dimmer in use for residential applications is better known as a triac based dimmer These are also the simplest types of dimmers and in general the least expensive A triac based dimmer may also be referred to as a Forward Phase Control or Leading Edge dimmer A triac is used as the power switching element in the dimmer Due to the nature of the triac the dimmer does not apply power to the controlled device driver until sometime after the zero crossing of the AC cycle Once the dimmer starts conducting it will do so un
12. nufacturers This list does not imply Tropo will operate properly with the indicated number of LEDs under all conceivable operating parameters and from every LED manufacturer but should serve as a guide in determining the Tropo driver possible for a particular application T B LEDs in a sting RLDD015X 350 te a f a PRLDDOI5X 480 10 385 os RLDD015X 600 8 RDoosxzo a a RLDD015X 800 8 1R RLDD015X 900 10 16 RLDD015X 900L 8 BR RLDD015X 1000 10 16 RLDD015X 1200 10 B4 RDD015X 1250 8 nr RLDD015X 1400 8 15 5 0 RLDD015X 1500 FI GURE 2 If an application does not meet the above requirements contact Roal to discuss a modified standard product It is possible to modify the Tropo driver to operate at lower currents to permit a wide variety of possible driver models In addition if the application will utilize an LED chip assembly consult the factory for possible drivers for the application There are a number of drivers already designed to operate with Bridgelux and Citizen LED chip assemblies NOTE SOME STANDARD MODELS ARE BUILT TO ORDER PLEASE CONSULT THE FACTORY TO CHECK AVAI LABI LI TY TRC ELECTRONICS INC 1 888 612 9514 mw www trcelectronics com roal NOTE 2 Drivers Output Voltage Range ROAL RLDD TROPO Series User Manual Lyf Ia TRC ELECTRONICS INC Selling power supply solutions since 1982 RONG E iving energy TROPO SERIES SELECTOR GUIDE
13. til the zero crossing of the AC cycle Dimming is achieved by delaying the time at which the dimmer starts to conduct As the dimmer is moved through its range the amount of time that the AC voltage is applied varies Figure 2 shows the relationship of the AC input voltage versus the output of a triac based dimmer Forward Phase Control Leading Edge Chopped AC Input to Driver AC Wall Power 0 50 100 150 200 250 300 350 400 Conduction Degrees Figure 2 A triac based dimmer is typically a simple 2 wire device that is connected as a switch This means the second line of the AC power is not required to be connected to the dimmer TRC ELECTRONICS INC 1 888 612 9514 A www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D FEC ROAL RLDD TROPO Series User Manual P rac ELECTRONICS INC Selling power supply solutions since 1982 ia Electronic Low Voltage ELV Dimmers ELV dimmers are typically more expensive than triac based dimmers These dimmers use more elaborate circuitry to control the output voltage ELV dimmers are available in both Forward Phase Control Leading Edge and Reverse Phase Control or Trailing Edge types A Reverse Phase Control dimmer will start to provide power to the load at the zero crossing of the AC cycle and terminate somewhere during the cycle Dimming is achieved by delaying the time at which the dimmer stops conducting Figure 3 shows the relationship of the AC
14. xceed 100 feet extra care must be taken to ensure the end product performs properly This is a result of the high degree of variability tn the triac dimmers Although Roal has performed extensive testing on TROPO the number of system variables is significant Therefore operations in every conceivable system application cannot be guaranteed TRC ELECTRONICS INC 1 888 612 9514 g www trcelectronics com roal NOTE 1 Line Voltage Dimming of TROPO Drivers lf D z 6 ROAL RLDD TROPO Series User Manual P Ez ELECTRONICS INC Selling power supply solutions since 1982 HA Troubleshooting of dimming problems Problem Possible Cause Solution S O e Change dimmer to a device that dims to gt 150 degrees Dimmer maximum conduction angle lt 150 degrees LED does not achieve full light output at high end of dimming range Low AC Input voltage Incorrect Tropo driver for LED in use e Correct low AC voltage e Call Roal Electronics to discuss the application e Faulty dimmer Replace dimmer e Faulty driver LED Replace driver LED J e LED is always at full brightness Dimmer wired incorrectly e Check and correct wiring does not dim e Faulty dimmer e Replace dimmer When the dimmer is turned to This is typical operation for e Ifthe dimmer includes a low end minimum and the power applied dimmers that reduce to a adjustment raise the dimming the LED doesn t turn on until the conduction angle of less than level dimmer
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