OPTOTRONIC® LED Power Supply OT 50/120-277/1A2 2DIMLT2 P Instruction Sheet Technical Data Nominal Input Voltage Input Voltage (L/N) Input Current Mains Frequency Power Factor Control Input / Dimming 0-10V Interface Standby Power LED Interface IP Rating Remarks: 220-240 Vac 120/277 Vac 3) 108 – 305 Vac 0,50A @ 120 Vac 0,26A @ 230 Vac 50 / 60 Hz ≥ 0,95 @ 230 Vac 0-10V / AstroDIM < 1mA No switch off possible LEDset2 (LT2) IP 64 Maximum Output Power Pmax 50W @ 910-1250mA Output Power Range Maximum Output Voltage Uout Rated Output Voltage Rated Output Current Rated Dimming Range Ambient Temperature Max. Case Temperature at tc Max. Cable Length (LED+/LED-) Max. Cable Length (LT2/NTCset) Version 12 W – 50 W 60 Vdc 1) 20 – 55 Vdc 600 – 1250 mAdc 30 -100 % 2) - 40°C to +55°C + 80°C 10 m 2m AA68629 1) SELV 220-240 Vac: -40°C to +55°C and 120/277 Vac: -40°C to +50°C 3) Tc < Tc(max) 2) Read latest datasheet and the related documents (e.g application notes) before using the unit. The documents are available on the internet (www.osram.com). Operating Window General Notes • • • • • • • • • The unit must be installed by a qualified electrician. Do not service the unit when the mains voltage is connected. Do not use damaged or defective contacts or housings. Do not use damaged units. The unit is intended for built-in use. The luminaire manufacturer is responsible to prevent direct exposure for example to sunlight, water, snow, ice. The luminaire manufacturer is responsible for its own luminaire design, this has to comply with all relevant safety standards. The maximum temperature should never exceed Tc(max) at the case temperature point (tc). Cap off all unused wires to prevent accidental contact with other parts of the luminaire and driver. Programmed parameters needs to be verified before usage (see restrictions: 0-10V/AstroDIM Features). 1 Edition: 3rd August 2015 Ver.: 1.3 Status: Released C10419714 G10549897 OPTOTRONIC® LED Power Supply OT 50/120-277/1A2 2DIMLT2 P Instruction Sheet Default Parameter Settings Dimming Mode Output Current Temperature Protection Constant Lumen Lamp Operating Time End of Life 0-10V 0 -10 V 1000 mA Enabled; Resistor based; Start: 6,3 kOhm; End: 5,0 kOhm; Level 50% OFF 0 khrs OFF Minimum Dimming Level 30 % Programming This unit is fully programmable via OSRAM OT Programmer with the help of the Tuner4TRONIC Programming of the driver via Prog+ and Prog- is only allowed without powering it via L/N. ® software. The new programmed parameters would get valid with the next power on cycle. Further details are available in the application guide for the 2DIMLT2 family. Thermal Protection This unit offers resistor based mode to set the thermal protection of the LED module or the luminaire. An external temperature sensor (e.g. NTC) must be connected between LED- and NTCset. This feature is recommended to guarantee long lifetime of the LED luminaire. Resistor based If the NTC value falls below the “start derating” resistance value, the unit starts derating down to set “derating level” at the “end derating” value. Start Derating Temperature [6,3 kOhm] 56 °C 66 °C 75 °C 85 °C NTC Type 22K 33k 47k 68k End Derating, Switch On Temperature [5,0 kOhm] 62 °C 72 °C 83 °C 92 °C The temperature threshold would vary on the used NTC component and tolerance. 2 Edition: 3rd August 2015 Ver.: 1.3 Status: Released C10419714 G10549897 OPTOTRONIC® LED Power Supply OT 50/120-277/1A2 2DIMLT2 P Instruction Sheet LEDset2 (LT2) The unit offers two operating modes: “Fixed Current” or “LEDset2”. By default the “Fixed Current” Mode is enabled. ® In case the LEDset2 interface is activated the external thermal protection feature is disabled. With the Tuner4TRONIC it is feasible to set one of those two modes. I OUT [A ] = 5V ×1000 Rset [Ω ] Iout [mA] Rset [kOhm] Iout [mA] Open Circuit 600 700 1050 1250 Undefined Short Circuit > 27.7 8,25 (E192) 7,15 (E192) 4,75 (E192) 4,02 (E192) < 2,00 < 900 180 606 699 1052 1243 1250/180 180 reference nominal Refer to the LEDset2 application note for further details. 0-10V/AstroDIM ® Dimming down to 10% of the maximum rated output current could be enabled through the Tuner4TRONIC software, but the compliance with EN61000-3-2 must be checked below 30% dimming level. The device will follow the dimming scheme of each feature. When the output level in the dimming scheme is below the minimum physical dimming level (minPHY), the minimum physical dimming level will be used. Insulation The unit has double/reinforced insulation from primary to the secondary side and double/reinforced insulation between all electronic parts and the chassis. Symbols: The equipotential connection / casing (EQUI) meets the requirements for double insulation versus primary side. Port L/N EQUI/ housing 0-10V LT2 NTCset Prog+ LED+ LEDProg- L/N - double basic double double EQUI / housing double - supplementary basic basic 0-10V basic supplementary - supplementary supplementary LT2/NTCset/Prog+ double basic supplementary - - LED+/LED-/Prog- double basic supplementary - - ‘-‘ no insulation 3 Edition: 3rd August 2015 Ver.: 1.3 Status: Released C10419714 G10549897 OPTOTRONIC® LED Power Supply OT 50/120-277/1A2 2DIMLT2 P Instruction Sheet Wiring • The EQUI (=housing) [2] shall be connected to the heat sink of the LED module [1] to improve the surge withstand capability of the system and EMI in critical luminaires. • The unit is suitable for protection class I and II luminaires. The connection of the EQUI (=housing) to protective earth is only necessary in protection class I luminaires [3]. • The unit is suitable for supplying UL class 2 LED string according UL 8750. The connection of the EQUI (=housing) to Protective Earth is necessary to meet UL approbation in case of connection to dead metal parts. Maximum output cable length is limited by EMI and cross diameter. This control gear is not suitable to disconnect the LED load during normal operation. Input and Output Wire length: 280 mm +/- 20 mm This control gear is inherently protected against wrong wiring on the output side. The wrong connections between LED+ with LT2/NTCset could damage irreversibly the ECG. All the other wrong wirings on the output, once removed, make the ECG work regularly. • The NTCset/LT2, LED+ and LED-, 0-10V cables are ESD protected up to 4kV according IEC 61000-4-2. • The startup time to reach the set output current is less than 5 s. • • • • OSRAM GmbH OSRAM China Lighting LTD. Steinerne Furt 62, 86167 Augsburg, Germany No. 1, North Industrial Road 528000 Foshan Guangdong, P.R. China www.osram.com www.osram.com 4 Edition: 3rd August 2015 Ver.: 1.3 Status: Released C10419714 G10549897