www.osram.com 0-10 V Ext. NTC StepDIM 6 kV AstroDIM CLO (DIF) 6 kV (COM) 08/2015 Technical application guide 2DIMLT2 P LED drivers Light is OSRAM 2DIMLT2 P LED drivers | Contents Contents 1 Introduction 03 1.1 OSRAM LED drivers with 2DIM functionality 4 Additional information 19 4.1 Insulation 19 03 4.2 Wiring/connection 19 1.2 2DIMLT2 P product family 04 4.3 Ingress protection (IP) 19 1.3 Nomenclature 06 4.4 Incorrect wiring on the output side 19 1.4 Operating windows 06 4.5 Input overvoltage 19 1.4.1 Supported LEDs 07 4.6 Surge protection 20 1.4.2 Current foldback 07 5 Programming 21 2 Features 08 2.1 Operating current 08 for outdoor and industrial applications 2.1.1 Fixed current mode 08 2.1.2 LEDset2 mode 08 2.2 Thermal derating and protection 10 2.2.1 External temperature sensor 10 2.2.2 Internal LED driver temperature protection 10 2.3 Constant lumen function 11 2.4 End of life 11 3 Operating modes 12 3.1 On/off operating mode 12 3.2 AstroDIM feature 13 3.2.1 Astro-based mode 14 3.2.2 Presence detection in AstroDIM mode 16 3.3 StepDIM feature 17 3.3.1 Mixed StepDIM installations with 3DIM and 2DIMLT2 P LED drivers 3.4 0–10 V operating mode 18 18 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 www.osram.com or contact your sales partner for an updated copy of this guide. This technical application guide is for information purposes only and aims to support you in tackling the challenges and taking full advantage of all opportunities the technology has to offer. Please note that this guide is based on own measurements, tests, specific parameters and assumptions. Individual applications may not be covered and need different handling. Responsibility and testing obligations remain with the luminaire manufacturer/OEM/application planner. 2 2DIMLT2 P LED drivers | Introduction 1 Introduction 1.1 OSRAM LED drivers with 2DIM functionality for outdoor and industrial applications Long lifetime, low maintenance costs and high efficiency are very important for outdoor and industrial applications. OPTOTRONIC ® LED drivers for outdoor applications meet these requirements and unlock the full potential of LEDbased light sources. Thanks to the flexibility of the fast, power-off programming of OPTOTRONIC® 2DIMLT2 P LED drivers, LED luminaire systems can be optimally adapted to the required conditions and their cost can be optimized. With the two integrated dimming functions (2DIM), significant energy savings and a reduction of greenhouse gas emissions can be achieved. In order to be ready for smart city infrastructures, the 0–10 V interface allows for the simple integration into telemanagement systems (for example with the OSRAM Street Light Control system). Due to the wide operating window (voltage/current) of these LED drivers, both OSRAM LED modules for outdoor applications and customer-specific LED modules can be operated. This also means that the overall amount of different LED drivers on stock can be kept low and that the overall complexity of luminaire maintenance over the entire life cycle can be reduced. With the LEDset2 interface, OSRAM has created a new path towards standardizing the communication between the LED driver and the LED modules. Without reprogramming, LEDset2 ensures optimal efficiency, a high level of reliability and the adaptability of the LED drivers to the latest LED technologies. Finally, due to integrated overvoltage protection, LED drivers with 2DIM functionality are also setting a new standard against surges of up to 6 kV for class I and II luminaires. 3 2DIMLT2 P LED drivers | Introduction 1.2 2DIMLT2 P product family The 2DIMLT2 P product family consists of two different output power classes of up to 110 W and two current ranges of up to 1.4 A. All types have the same 2DIM dimming capabilities and the new multi-vendor LEDset2 interface. They can be programmed via the Tuner4TRONIC® software. The following overview shows the main features of these new LED drivers. Table 1: Family overview Product name OT 50/120-277/800 2DIMLT2 P OT 50/120-277/1A2 2DIMLT2 P OT 100/120-277/800 2DIMLT2 P OT 110/120-277/1A4 2DIMLT2 P Maximum power 50 W 50 W 100 W 110 W Input voltage L/N 120 V, 220–240 V, 277 V 120 V, 220–240 V, 277 V 120 V, 220–240 V, 277 V 120 V, 220–240 V, 277 V Output current range 105–800 mA 180–1250 mA 105–800 mA 180–1400 mA Surge (dif/com) 6/6 kV 6/6 kV 6/6 kV 6/6 kV SELV SELV Double SELV Double Double Double Double General Insulation (primary/secondary) Insulation of casing Dimming features DALI 0–10 V DALI Not supported Not supported Not supported Not supported + ext. relay + ext. relay + ext. relay + ext. relay + ext. relay + ext. relay + ext. relay + ext. relay 0-10 V StepDIM (SD) StepDIM StepDIM inverse (SD) StepDIM AstroDIM (astro-based) AstroDIM AstroDIM (time-based) AstroDIM Not supported Not supported Not supported Not supported MainsDIM MainsDIM Not supported Not supported Not supported Not supported + ext. relay + ext. relay + ext. relay + ext. relay Not supported Not supported Not supported Not supported Presence detection PRESENCE Other features Constant lumen function Fit for SMART GRID CLO SMART GRID LEDset2 External NTC Ext. NTC Programming software Tuner4TRONIC ® 4 2DIMLT2 P LED drivers | Introduction 0–10 V LEDset (Generation 2) 0-10 V All OSRAM 2DIMLT2 P LED drivers are equipped with a 0–10 V interface which provides an easy and proven dimming possibility. Due to the wide distribution of the 0–10 V interface in the market, there are many suitable sensors and control systems available, such as the OSRAM Street Light Control system. StepDIM/StepDIM inverse StepDIM Dimming via an external control phase: In combination with an external switch-over relay connected to the 0–10 V inter face, the 2DIMLT2 P LED driver is applicable for StepDIM installations. The dimming value can be set using the Tuner4TRONIC® software. AstroDIM AstroDIM Automatic dimming via an integrated timer (no real-time clock): Five independent dimming levels and zones can be set with the Tuner4TRONIC® software. Brightness variation is possible in combination with an external presence sensor. The new generation LEDset2 is an improved LED module interface for the combination of single or multiple LED modules with one LED driver via a single analog control line. This interface enables external current setting and temperature monitoring. The LEDset2 interface has no auxiliary supply and is not compatible with LEDset (Generation 1). LEDset2 has an absolute current coding, while LEDset (Generation 1) only has a relative one. External temperature sensor Ext. NTC This feature allows the temperature protection of the LED module or the complete luminaire in hot ambient temperatures via an external sensor (e.g. NTC, negative temperature coefficient resistor). The derating can be modified via the Tuner4TRONIC® software. Note: It is not possible to use the LEDset2 interface and an external NTC at the same time since they share the same port. Integrated overvoltage protection 6 kV EQUI (DIF) CLO (constant lumen output) CLO 6 kV (COM) The 2DIMLT2 P LED drivers have an integrated overvoltage protection of up to 6 kV for differential and 6 kV for common mode overvoltages. The decrease in the luminous flux of an LED module can be compensated over its entire lifetime via a preprogrammed current curve. This not only ensures stable lighting but also saves energy and increases the lifetime of the LEDs. 5 2DIMLT2 P LED drivers | Introduction 1.3 Nomenclature The product name of each OPTOTRONIC® 2DIMLT2 P LED driver is defined as shown below. Figure 2: Overview of 2DIMLT2 P operating windows Figure 1: OT 110/120-277/1A4 2DIMLT2 P Output voltage [V] OT 50/800 2DIMLT2 P OT 100/800 2DIMLT2 P OT 50/1A2 2DIMLT2 P OT 110/1A4 2DIMLT2 P Nominal range Dimming range 200 180 160 140 120 100 OT: 110: 120-277: 1A4: 2DIM: LT2: P: ® OPTOTRONIC LED driver Power class: 110 W Input voltage range (L/N): 120–277 V Max. output current: 1400 mA 2DIM functionality (0–10 V, AstroDIM) LEDset2 (LED module interface) Humidity-protected with IP 64 80 60 40 20 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Output current [A] 1.4 Operating windows The OPTOTRONIC® 2DIMLT2 P LED driver family is split up into two different power classes to provide the best suitable power supply for different applications. Table 2: 2DIMLT2 P maximum allowed output power Type Pmax OT 50/120-277/ 800 2DIMLT2 P 50 W OT 50/120-277/ 1A2 2DIMLT2 P ta V in (nominal) -40…+50 °C 120/277 V -40…+55 °C 220–240 V -40…+50 °C 120/277 V -40…+55 °C 220–240 V 50 W -40…+45 °C 120 V OT 100/120-277/ 100 W 800 2DIMLT2 P 90 W -40…+55 °C 220–240 V 100 W -40…+50 °C 277 V -40…+40 °C 120 V -40…+55 °C 220–240 V -40…+55 °C 277 V OT 110/120-277/ 1A4 2DIMLT2 P 110 W 6 2DIMLT2 P LED drivers | Introduction Table 3: 2DIMLT2 P operating range Type Minimum Minimum Maximum Minimum Maximum dimming nominal nominal output output current current current voltage voltage OT 50/120105 mA 277/800 2DIMLT2 P 350 mA 800 mA 30 V 115 V OT 50/120180 mA 277/1A2 2DIMLT2 P 600 mA 1250 mA 20 V 55 V OT 100/120105 mA 277/800 2DIMLT2 P 350 mA 800 mA 50 V 186 V OT 110/120180 mA 277/1A4 2DIMLT2 P 600 mA 1400 mA 35 V 85 V 1.4.2 Current foldback The intelligent 2DIMLT2 P family allows a safe start-up of the system. In case the input voltage of the load exceeds the output voltage range of the driver [1], it automatically reduces the output current to keep the output voltage controlled to the maximum allowed output voltage. If no permitted operating point is achieved, the driver may shut down. The driver automatically reduces the output current in case the maximum allowed output power is exceeded [2], as long as the input voltage of the load is within the declared output voltage range of the driver. In all other cases, the driver may shut down the load. If the voltage of the load falls below the minimum allowed value of the driver, the output is switched off until the next power-off/on cycle. The same behavior occurs if no load is detected during the power-up phase of the driver (hot-plug protection). Figure 3: Current foldback (example: OT 50/120-277/1A2 2DIMLT2 P) Output voltage [V] Warning: When LED drivers are permanently operated below an output level of 30 %, it is necessary to ensure compliance with relevant IEC standards (for example mains current distortion and power factors). According to UL standards, dimming down to 10 % is allowed. 1.4.1 Supported LEDs Table 4 shows how many LEDs can be driven with one LED driver. The values are based on the following assumptions: VfLED = 3.25 V at 1400 mA and Vf LED = 2.5 V at 105/180 mA 60 1 2 50 40 30 20 10 Table 4: Supported number of LEDs Type Minimum number of LEDs Maximum number of LEDs OT 50/120-277/800 2DIMLT2 P 12 35 OT 50/120-277/1A2 2DIMLT2 P 8 17 OT 100/120-277/800 2DIMLT2 P 20 57 OT 110/120-277/1A4 2DIMLT2 P 14 26 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Output current [A] Warning: The real number of supported LEDs needs to be checked according to the minimum and maximum forward voltage in the worst case conditions. They have to match the minimum and maximum output voltage of the used LED drivers. The forward voltage of the connected LED module in dimming condition is lower than the forward voltage in nominal condition but still has to be above the minimum output voltage of the LED driver. 7 2DIMLT2 P LED drivers | Features 2 Features Figure 5: LEDset2 parallel connection Luminaire 1 2DIMLT2 P L N LED+ LED- LT2 DIM- DIM+ 2.1 Operating current Flexible current setting allows taking advantage of the continuously improving LED technology and building a future-proof system. The 2DIMLT2 P family offers two modes for current setting, which can be set via the Tuner4TRONIC® software: — Fixed current: Current setting via programmable interface — LEDset2: Current setting via the LEDset2 interface Figure 4: Setting of the operating current R set The LEDset2 interface is disabled by default and has to be activated using the Tuner4TRONIC® software. Note: In addition to the LEDset functionality, the LEDset port on the 2DIMLT2 P LED drivers is used to program the driver or realize a thermal protection. The LEDset2 mode and the thermal protection cannot be used at the same time. Luminaire 1 2DIMLT2 P L R set N LED+ LED- LT2 Note: In the following figures, the LED module is displayed in a simplified way. The real number of LEDs depends on the output voltage of the driver. LED module Figure 6: LEDset2 series connection DIM- 2.1.2 LEDset2 mode The LEDset2 interface (LEDset generation 2) is a standardized LED module interface to set the right output current and establish an easy and low-cost temperature protection for the connected LED module. This multi-vendor interface is suitable for LED modules connected in parallel or series. LED module DIM+ 2.1.1 Fixed current mode To use the fixed current mode, it has to be selected in the Tuner4TRONIC® software. The minimum and maximum rated output currents are displayed according to the selected LED driver. The output current of the LED driver can be set by changing the value in the “Operating Current” field. Rset Rset LED module LED module 8 2DIMLT2 P LED drivers | Features The output current of the LED driver can be set using an externally connected resistor (min. power rating 50 mW, max. tolerance 0.5 %). This provides the possibility to set the LED current manually without the need for an additional programming of the LED driver. With a resistor mounted on the LED module as shown in figure 7, the correct LED current can be set automatically. With this resistor, the desired current for the LED module is set according to the used LED bin and needed lumen output, offering a real plugand-play solution and making the system future-proof. Figure 9: OT 50/120-277/1A2 2DIMLT2 P Output current [mA] 1 Undefined range 1500 1300 1100 900 1 700 Figure 7: Rset connection 2 Nominal range 500 Luminaire 1 300 2DIMLT2 P L N LED+ LED- LT2 DIM- DIM+ 100 0 2 1 10 100 Rset [kΩ] Table 6: LEDset2 resistor coding I out [mA] reference R set LED module R set [kΩ] I out [mA] nominal Open circuit > 27.7 180 600 8.25 (E192) 606 700 7.15 (E192) 699 1050 4.75 (E192) 1052 1250 4.02 (E192) 1243 Undefi ned < 2.00 1250/180 Short circuit < 900 180 The LEDset2 coding for the 2DIMLT2 P family is shown in the following graphs. Figure 8: OT xxx/120-277/800 2DIMLT2 P 1 Undefined range Output current [mA] Figure 10: OT 110/120-277/1A4 2DIMLT2 P 2 Nominal range 900 1500 800 1300 700 1 Undefined range Output current [mA] 2 Nominal range 1100 600 900 500 1 1 400 700 300 500 200 300 2 100 2 100 0 0 1 10 100 1 10 Rset [kΩ] Table 5: LEDset2 resistor coding 100 Rset [kΩ] Table 7: LEDset2 resistor coding I out [mA] reference R set [kΩ] I out [mA] nominal I out [mA] reference R set [kΩ] I out [mA] nominal Open circuit > 47.6 105 Open circuit > 27.7 180 350 14.0 (E192) 357 600 8.25 (E192) 606 500 10.0 (E192) 500 700 7.15 (E192) 699 700 7.15 (E192) 699 1050 4.75 (E192) 1052 800 6.19 (E192) 808 1400 3.57 (E192) 1400 Undefi ned < 3.12 800/105 Undefi ned < 1.79 1400/180 Short circuit < 900 105 Short circuit < 900 180 9 2DIMLT2 P LED drivers | Features 2.2 Thermal derating and protection Table 6: Overview of standard NTCs 2.2.1 External temperature sensor By connecting an external temperature sensor to the NTCset port of the 2DIMLT2 P LED driver, a very easy and cost-efficient temperature protection of the LED module can be realized. As an example, an NTC (negative temperature coefficient resistor) can be mounted on the LED module and connected as shown in figure 11. In case the thermal protection feature is enabled and nothing is connected to the NTCset terminal, the driver delivers 100 % light output. Figure 11: NTC connection NTC type Start derating temperature [6.3 kΩ] End derating temperature [5.0 kΩ] 22 kΩ 56 °C 62 °C 33 kΩ 66 °C 72 °C 47 kΩ 75 °C 83 °C 68 kΩ 85 °C 92 °C Figure 12: Thermal protection settings Luminaire 1 2DIMLT2 P L N LED+ LED- LT2 DIM- DIM+ Figure 13: Thermal protection derating behavior R set LED module Table 7: Supported value ranges The 2DIMLT2 P LED drivers only support the following temperature protection mode: — Resistor-based mode Note: As the thermal protection and the LEDset interface are using the same connection, only one of the two functionalities can be used at the same time. Parameter Min. Max. Resistor range 1.0 kΩ 25 kΩ Increment 25 Ω Derating level 10 % 100 % 1% Warning: The derating level cannot fall below the minimum physical dimming level of the LED driver, even if the software displays a lower value. Resistor-based mode The resistor-based mode is activated by default. If the connected resistor sensor value falls in the range between 6.3 and 5.0 kΩ, the output current is continuously lowered down to 50 %. The derating level can be varied between 100 and 10 %, a complete switch-off is not possible. 2.2.2 Internal LED driver temperature protection 2DIMLT2 P LED drivers also have an internal thermal protection. If the maximum tc temperature is exceeded by 10 degrees, the output of the LED driver is switched off until the temperature has decreased and a power-off/on cycle has been performed. In this mode, a common NTC can be used to achieve a fixed thermal protection as shown in table 6. The specified temperatures can vary, depending on the used NTC component and the corresponding tolerances. Note: To achieve the lifetime data of the driver, the luminaire manufacturer needs to ensure that the maximum tc temperature is never exceeded. 10 2DIMLT2 P LED drivers | Features 2.3 Constant lumen function Over the lifetime of an LED module, the light output drops due to the aging process of the LEDs. To achieve a constant light output of the module, the LED driver stores the operating hours of the LED module and increases the output current to react to the light output drop. To set this feature according to the applied LED module, the Tuner4TRONIC® software can be used as shown, for example, in figures 14 and 15. Figure 16: Constant lumen function – possible savings Figure 14: Constant lumen programming table The exact values for programming the constant lumen function for the connected LED module need to be obtained from the corresponding LED supplier. Figure 15: Constant lumen programming graph (operating time = 10 kh) 2.4 End of life The LED driver can indicate that a preprogrammed lifetime of the connected LED module is reached and the module should be replaced. This function has to be activated in advance via the Tuner4TRONIC® software. The “end of life” indication can be programmed as shown in figure 17. Figure 17: End of life setting The output levels have to be steadily increasing from the beginning to the end. Warning: The output level is indicated as a red number if the level is set higher than 100 %. In this case, the reliability and safety of the module needs to be checked if the nominal operating current is exceeded. It is not possible to achieve a higher output current than the maximum nominal output current of the LED driver. If the specified lifetime is reached, the LED driver indicates this through a lower light output during the first 10 minutes of the switch-on period, as shown in figure 18. Figure 18: “End of life” behavior without switch-on fade time Output level [%] Output current The output level cannot fall below the minimum physical dimming level of the LED driver, even if the software displays a lower value. By clicking the “Savings” button, the estimated energy savings are calculated as shown in figure 16. This value is only an estimation because it does not consider, for example, the LED Vf behavior and the efficiency of the driver. Minimum dimming current Time 10 minutes “end of life” indication 11 2DIMLT2 P LED drivers | Operating modes 3 Operating modes The operating modes of a 2DIMLT2 P LED driver can be selected using the Tuner4TRONIC® software. Only one mode can be selected. Figure 19: Operating modes Figure 20: Wiring for on/off operation Luminaire 1 Luminaire 2 2DIMLT2 P 2DIMLT2 P L N LED+ LED- DIM- LT2 DIM+ L LED module N LED+ LED- DIM- LT2 DIM+ R set R set LED module PE L1 S1 N Switching cabinet 3.1 On/off operating mode 2DIMLT2 P LED drivers can also be used in a simple on/off operating mode. The dimming mode has to be set to “No dimming (ON-OFF)”. 12 2DIMLT2 P LED drivers | Operating modes 3.2 AstroDIM feature The AstroDIM feature allows an autonomous dimming without the need for an additional control line. The 2DIMLT2 P LED drivers support up to five independent dimming levels and flexible settings of fade times between the individual dimming levels. The output levels can be set to between 10 % and 100 % in steps of 1 %. This family only supports the astro-based AstroDIM mode. Time-based: Not supported. Astro-based: The dimming profile defined in the reference schedule is referenced to the annual average middle of the night, which is calculated based on the theoretical sunrise and sunset times. The durations of the different dimming levels are derived from an internal clock. The LED driver does not have a real-time clock. Warning: If the output level is set below the minimum physical dimming level of the LED driver, the minimum dimming current is used. The software still displays the original value. Figure 21: Wiring: AstroDIM Luminaire 1 Luminaire 2 2DIMLT2 P 2DIMLT2 P L N LED+ LED- LT2 DIM- DIM+ L LED module N LED+ LED- LT2 DIM- DIM+ R set R set LED module PE L1 S1 N Switching cabinet 13 2DIMLT2 P LED drivers | Operating modes 3.2.1 Astro-based mode In this mode, the LED driver performs a dimming profile based on the daily power-on and power-off times. The dimming schedule is adapted according to the length of the night. reference schedule. The minimum length of one dimming period has to be longer than the AstroDIM fade time. Valid time values can be set between 12:00 pm and 11:59 am. If less than five output levels need to be performed, two sequenced levels have to be set to the same value. The Tuner4TRONIC® software calculates the annual average middle of the night based on the theoretical sunrise and sunset times, which are related to the location selected in the software. Based on this average middle of the night, five independent dimming periods can be defined in the Note: The maximum duration of one step is limited to ≤ 8 hours. The defined dimming profile is already performed after the second power-off/on cycle after programming. Figure 22: Astro-based AstroDIM Fade timing: — AstroDIM fade time: Fade time between the different dimming levels. Table 8: Fade timing parameters (astro-based mode) Figure 23: Schedule by day Parameter Min. Max. Default AstroDIM fade time 0s 3 min 3 min The “schedule by day” in the AstroDIM feature tab calculates the estimated dimming behavior for a specific day based on the theoretical sunrise and sunset times. If daylight saving has to be considered, the corresponding check box needs to be ticked. The LED driver itself is not able to detect summer and winter time and does not have an internal real-time clock. In case the installation is not powered on and off at the calculated sunrise and sunset times, the correct values can be entered in the manual mode as shown in figure 23. The AstroDIM function in astro-based mode relies on an intelligent algorithm. It starts after the first valid night and reaches its maximum precision after 8 valid days. A valid on-time is defined if the duration of the operation is longer than 4 hours and shorter than 24 hours. 14 2DIMLT2 P LED drivers | Operating modes Figure 24: Use cases of AstroDIM mode Output level [%] The AstroDIM profile is performed after the first valid on-time. 12 3 45 Mains Night 1 Night 2 Time Day 2 Time On First power-on Off Day 1 Case A Output level [%] Voltage dips of less than 100 ms do not affect the on-time (case B). Mains 1 23 45 12 3 45 Night 1 Night 2 Time Day 1 Day 2 Time On Off Short voltage dips (< 100 ms) Case B Output level [%] If the on-time of the LED driver is shorter than 4 hours, it is not saved and therefore not used to calculate the next on-time (case C). Mains 1 1 2 12 3 45 Night 1 Night 2 Time Day 1 Day 2 Time On Off Case C 15 2DIMLT2 P LED drivers | Operating modes Mains Output level [%] Operating time longer than 24 hours 12 3 45 12 3 45 12 3 45 12 3 45 Night 1 Night 2 Night 3 Night 4 Time Day 1 24 h 24 h 24 h Time On Off Case D If the on-time of the LED driver is longer than 24 hours, it is not saved and therefore not used to calculate the next ontime. Note: 2DIMLT2 P LED drivers are not intended to be operated longer than 24 hours since the start time of each dimming step can vary significantly due to the tolerance of the internal clock. 3.2.2 Presence detection in AstroDIM mode In the “AstroDIM + presence detection” dimming mode, it is possible to override the dimming profile of AstroDIM by shortening the 0–10 V interface with an external relay triggered by a sensor (e.g. motion sensor or presence sensor). If the 0–10 V interface is shortened, the output level is set to 100 %. Note: The relay should be suitable for small currents (~1 mA for the 0–10 V interface) and also provide the sufficient insulation to maintain the insulation level between the primary and secondary side of the LED driver. Figure 25: AstroDIM wiring with presence detector Luminaire 1 Luminaire 2 2DIMLT2 P 2DIMLT2 P L N LED+ LED- LT2 DIM- DIM+ L N LED+ LED- LT2 DIM- DIM+ Relay Relay R set R set LED module LED module LED module PE L1 S1 N SD Switching cabinet L N L' Sensor 16 2DIMLT2 P LED drivers | Operating modes 3.3 StepDIM feature StepDIM is a one-step dimming mode using an additional control line or a switched phase (pilot line) to control one or more light points and set the light output to a preprogrammed light level. To enable StepDIM operating mode, the 2DIMLT2 P LED driver has to be set to “0–10 V” operating mode using the Tuner4TRONIC® software. In order to enable the StepDIM functionality in combination with the 2DIMLT2 P LED driver family range, an additional relay (triggered by the StepDIM line) has to be connected to the 0–10 V interface. The light output level can be set in the “0–10 V” feature of the Tuner4TRONIC® software. Note: Please select a relay suitable for low currents (~1 mA on 0–10 V interface). To ensure a high reliability; the 0–10 V interface has to be switched using two relay contacts connected in parallel. Figure 26: StepDIM wiring Luminaire 1 Luminaire 2 2DIMLT2 P 2DIMLT2 P L N LED+ LED- LT2 DIM- Relay LED module DIM+ L N LED+ LED- LT2 DIM- DIM+ Relay R set R set LED module LED module PE L1 S1 N Lx S2 Switching cabinet Figure 27: StepDIM settings via 0–10 V feature In some installations, leakage currents might occur between the different phases due to old or damaged cables, which have insufficient insulation or high-capacitance coupling. The relay can be triggered if the leakage currents exceed the inactive SD input current. False triggering can be avoided by connecting the SD input to the neutral, using a bypass capacitance/resistance between SD and N and/or a relay with a high release voltage. 17 2DIMLT2 P LED drivers | Operating modes 3.3.1 Mixed StepDIM installations with 3DIM and 2DIMLT2 P LED drivers 2DIMLT2 P LED drivers with an external relay can be used directly with 4DIMLT2 LED drivers while compatibility with 3DIM drivers is only given in case they also have an external upstream relay (as described in the 3DIM application guide). Figure 28: 2DIMLT2 P StepDIM with mixed 3DIM drivers and 4DIMLT2 LED drivers Luminaire 2 Luminaire 1 Luminaire 3 4DIMLT2 E 2DIMLT2 P 3DIM ECG L N SD DA DA LED+ LED- NTCset Vset +12Vset GNDset L N LED+ LED- LT2 DIM- DIM+ L N SD DA DA LED+ LED- LED- LEDset NTCset LED module Relay LED module R set LED module PE L1 S1 N Lx S2 Switching cabinet 3.4 0–10 V operating mode In order to be able to control the 2DIMLT2 P outdoor LED drivers, an isolated (potential-free) 0–10 V dimming interface is integrated in this driver family. It can be used with common 0–10 V dimmers such as brightness sensors or powerline controllers with a valid voltage range of 1–8 V. Note: The master device has to be able to dissipate a current of 1 mA which is provided by the driver. If dimming levels below 30 % are set, it is necessary to ensure compliance with relevant IEC standards (for example mains current distortion and power factor). According to UL standards, dimming down to 10 % is allowed. The controller has to be able to switch off the mains voltage of the LED driver if the output has to be switched off completely (see figure 29). Figure 29: 0–10 V wiring with SLC Controller Luminaire 1 Luminaire 1 2DIMLT2 P 2DIMLT2 P L N LED+ LED- LT2 LED module LED module 1–10 V DIM- DIM+ L N LED+ LED- LT2 DIM- DIM+ R set R set Powerline Controller 1–10 V Powerline Controller PE L1 S1 N Switching cabinet 18 2DIMLT2 P LED drivers | Additional information 4 Additional information Type OT 110/120277/1A4 2DIMLT2 P IP-proof cable connection In order to maintain the protection rating on the luminaire level, the open wires of the LED drivers also have to be protected with an IP-proof cable connection. OT 100/120277/800 2DIMLT2 P Table 9: Insulation and Uout OT 50/120277/1A2 2DIMLT2 P 4.3 Ingress protection (IP) The unit is intended for built-in use. The 2DIMLT2 P LED drivers have passed the test for IP 64. Nevertheless, the LED driver has to be protected from direct exposure, for example to sunlight, water, snow or ice. OT 50/120277/800 2DIMLT2 P 4.1 Insulation 2DIMLT2 P LED drivers have a double/reinforced insulation between the primary and the secondary side and a double/ reinforced insulation between all electronic parts and the casing. SELV SELV Double SELV Insulation (primary/ secondary) Figure 30: IP-proof cable connection system Insulation of casing U out Solder sleeves (i.e. sealed solder connectors, as shown below) can be used to build a completely IP-proof system. The declared IP rating of the solder sleeves needs to be checked with the supplier. Double Double Double Double 120 V 60 V 200 V 120 V The equipotential connection (housing/EQUI) meets the requirements for double insulation versus the primary side and requirements for basic insulation versus the secondary side (it complies with the requirements of IEC 60598-1 Annex A – “safe to be touched” – in case of insulation fault between all secondary circuits and accessible conductive parts). Solder sleeve connector and stripped cable ends Left side: LED module, right side: LED driver The detailed insulation levels are defined in the instruction sheet of the product. Step 1: 4.2 Wiring/connection 2DIMLT2 P LED drivers come with pre-stripped solid copper wires to ensure an easy and quick wiring while ensuring a high IP rating of the driver. All wires meet the UL1452 safety standards. The EQUI connection needs to be established via the casing. Please ensure a proper electrical connection. The EQUI must be connected to the heat sink of the LED module to improve the surge withstand capability of the system and EMI in critical luminaires. The connection of the EQUI (= casing) to protective earth is only necessary in protection class I luminaires or to meet UL approbation in case of connection to dead metal parts. Table 10: Max. output cable length LED+/LED- 10 m NTCset/LT2 2m Insert the cables into the connector (with the stripped wire endings overlapping). Step 2: Use a hot-air gun to solder the wires. 4.4 Incorrect wiring on the output side 2DIMLT2 P LED drivers are inherently protected against incorrect wiring on the output side. Incorrect wiring between LED+ and LT2/NTCset can irreversibly damage the ECG. All other wrong wirings do not irreversibly damage the ECG. As soon as they are removed, the LED driver works regularly again. The NTCset/LT2, LED+ and LED- as well as the 0–10 V wires are ESD-protected up to 4 kV according IEC 61000-4-2. 4.5 Input overvoltage The 2DIMLT2 P LED driver can withstand up to 350 VAC for a maximum of two hours. 19 2DIMLT2 P LED drivers | Additional information 4.6 Surge protection 2DIMLT2 P LED drivers offer a protection level of up to 6 kV with a unique integrated overvoltage suppression for the connected LED module, which minimizes the stress on the LED module and thus ensures high reliability in the field. To achieve the surge protection levels, the housing of the driver (EQUI) needs to be electrically connected to the heat sink of the LED module (see figures 31 and 32). For the surge protection levels and test conditions mentioned below, the voltage stress between the LED module and the heat sink can be kept below 1.0 kVpeak. The EQUI pin meets the requirements for protection class I and II luminaires. The following protection levels can be achieved for class I and II luminaires: Table 11: 2DIMLT2 P surge protection levels Surge between Test condition acc. to EN 61547 L-N 6 kV at 2-Ω source SD-N 6 kV at 2-Ω source L-EQUI/N-EQUI 6 kV at 12-Ω source If an additional external surge protection device is used, please contact your OSRAM sales contact for support. Figure 31: Protection class I luminaire Electronically connect driver housing to heat sink and PE LED module OPTOTRONIC® 2DIMLT2 P Cable LED driver PE N N L L Figure 32: Protection class II luminaire Electronically connect driver housing to heat sink LED module OPTOTRONIC® 2DIMLT2 P Cable LED driver N N L L 20 2DIMLT2 P LED drivers | Programming 5 Programming 2DIMLT2 P LED drivers can be programmed using the Tuner4TRONIC® software together with the hardware programmer “OT Programmer”. This software consists of the following software packages: — T4T – Development — T4T – Production — T4T – Dynamic Link Library (DLL) — T4T – Command Line Version After registration, the software can be downloaded from the www.myosram.com portal. Disclaimer All information contained in this document has been collected, analyzed and verified with great care by OSRAM. However, OSRAM is not responsible for the correctness and completeness of the information contained in this document and OSRAM cannot be made liable for any damage that occurs in connection with the use of and/or reliance on the content of this document. The information contained in this document reflects the current state of knowledge on the date of issue. For more information on the programming of 2DIMLT2 P LED drivers, please consult the Tuner4TRONIC® manuals. Figure 33: LED driver programming 2DIMLT2 P PROG+ [OG] PROG- [BU] + OT Programmer USB USB PC 2DIMLT2 P LED drivers have to be programmed without supply voltage (see figure 33). This prevents electric shocks and reduces complexity during the production process. The system is still safe in case the LED driver is powered and the OT Programmer is connected. The cable length between the OT Programmer and the LED driver should not exceed 2 m. Note: A power-off/on cycle is necessary to activate the programmed parameters. Performance check: If electronically controlled control gears are combined with electrical power supplies, the electronic circuits of both devices might influence each other. This could lead to wrong measurements (e.g. lower power factor compared to the mains grid). In order to avoid these effects, a mains filter should be installed after the electrical power supply. 21 08/15 OSRAM S-GI MK EM Subject to change without notice. Errors and omissions excepted. www.osram.com OSRAM GmbH Head office: Marcel-Breuer-Strasse 6 80807 Munich, Germany Phone +49 89 6213-0 Fax +49 89 6213-2020 www.osram.com