ECS288 6/2016 1
ELECT R ICAL SPECIFICATIO NS
Input
Input Voltage (VAC)
120V-277V (+/- 10%)
Frequency Range (Hz) 50 – 60 Hz (+/- 10%)
120V
277V
Input Current (A)
0.52
0.23
THD @ Full Load
<10%
<20%
Power Factor @ Full Load
>0.9
>0.9
Efficiency @ Full Load
>85%
>85%
Inrush Current (A
pk
)
1.25
2.53
Output
Output Current (mA) 700-2000mA (1mA step)
Output Voltage (VDC) 10-55VDC
Output Ripple Current <20% @ 2000mA
Max. Out put Power (W) 48W
LED Power Up Time <1sec
Load Regulation <5%
Line Regulation <5%
Over Voltage Protection Yes, non-latching
Over Load Protection Yes, non-latching
Output Short -Circuit
Yes, non-latching
Over Temperature
Protection Foldback at 110
⁰
C
Auxiliar y Output (models: 79399 & 79468 only)
Output Voltage (VDC) 12/20/24V1(configurable)
Output Current (mA) 40
Voltage Regulation ±10%
LED Thermal Protection (NTC)
NTC Value Active Range ≤25kΩ
Output Level Minimum User defined
GENERAL INFORMATION
Item Number
79632, 79399, 79468,
79517
Constant Current, Class 2
48W (Max.)
51645 & 51647/51648
Software
Download
Programmable Features
Output current
Dimming level
Dim-to-off, Soft start
LED thermal protection
Auxiliary output voltage
Constant lumen output
End-of-lif e ind ic a tor
DIMMING SPECIFICATIONS
0 – 10V (Isolated)
10-100%, 1-100%
Analog , PWM
2 (≥1kHz)
2.5k
V
0.2
mA ma x
0.8
V
1.4W(120V); 1.7W(277V)
ENVIRONMENTAL SPECIFICATIONS
-
30ºC to 50ºC
Case Temperature (Tc)
75ºC (50kHrs)3
90°C (20kHrs)
70ºC
85% non-condensing
Transient Protection
NEMA SS L1 - 2010
Non-Roadway 2.5KV
Dry & Damp
E320395 // Class TL
FCC Part 15 Class A
Class A
1- Def au lt for G e n 1.5 is 12V
2
- The output is in PWM mode under 350mA. The lowest output current
is
10mA and the minimum percentage of dimming is dependent on the
programmed output current of the driver
3
- Warranty applicable only at 75ºC
OPTOTRONIC® LED Power Supply
OTi 48W Program mable - Technical Speci f ications
www.osram-americas.com/OPTOTRONIC
ECS288 6/2016 2
WIRING DIAGRAM
Note 1: The Vaux Out (YELLOW) and LED- (BLUE) will provide the DC Auxi liary output. Yellow is “+ve” polarity
and blue is
“-ve”polarity.
Note 2: Max imum s uggested r emote mounti ng d is tan c e is 16 feet. For a dd iti ona l inf ormation on f ur ther dista nc es
and EMI compliance reference OPTOTRONIC Technical Guide LED258
MECH ANICAL DIAGRAM
M ECHANICAL SPECIFI C ATIO NS
Length
11.02” (280mm)
Width
1.15” (29.4mm)
Height
1.0” (25.4mm)
Mounting Length
10.63” (270mm)
ECS288 6/2016 3
OPERATING RANGE
Note: Meeting DLC requirements requires m in im um 50% loading
DIMMING CURVE
0
10
20
30
40
50
60
500 700 900 1100 1300 1500 1700 1900 2100
Outpu Voltage (V)
Output Current (mA) PF>0.9 and THD <20%
0
20
40
60
80
100
012345678910
% of Output Current
Dimming Voltage (V)
10% Dimming
1% Dimming
ECS288 6/2016 4
THD VS INPUT VOLTAGE (FULL LOAD)
POWER FACTOR VS INPUT VOLTAGE (FULL LOAD)
0
2
4
6
8
10
12
14
16
100 150 200 250 300
THD (%)
Input Voltage (VAC)
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
100 150 200 250 300
Power Factor
Input Voltage (VAC)
ECS288 6/2016 5
EFFICIENCY VS OUTPUT VOLTAGE
70
72
74
76
78
80
82
84
86
88
90
515 25 35 45 55 65
Efficiency (%)
Output Voltage (V)
Efficiency @ 120V
2000mA
1400mA
700mA
70
72
74
76
78
80
82
84
86
88
90
515 25 35 45 55 65
Efficiency (%)
Output Voltage (V)
Efficiency @ 277V
2000mA
1400mA
700mA
ECS288 6/2016 6
POWER FACTOR VS LOAD
THD VS LOAD
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
010 20 30 40 50 60
Power Factor
Output Power (W)
Power Factor vs Output Power (120V)
2000mA
1400mA
700mA
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
010 20 30 40 50 60
Power Factor
Output Power (W)
Power Factor vs Output Power (277V)
2000mA
1400mA
700mA
ECS288 6/2016 7
LED THERMAL PROTECTION (NTC) CHARACTERISTIC
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
010 20 30 40 50 60
THD (%)
Output Power (W)
THD vs Output Power (120V)
2000mA
1400mA
700mA
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
010 20 30 40 50 60
THD (%)
Output Power (W)
THD vs Output Power (277V)
2000mA
1400mA
700mA
ECS288 6/2016 8
The LED th erm al protection f eature of the OTi 48W helps red uce the tem peratur e of the L ED module b y reducing
the output current in case of abnormal temperature conditions. To use this feature, a third party NTC thermistor
should be connected to the LED power supply as shown in the wiring diagram below.
In the end application, care must be taken to place the NTC thermistor close to the hottest spot on the LED module.
If LED thermal protection is not required the NTC port on the LED power supply connector can be left open.
Vishay, EPCOS, Murata, Panasonic are some of the manufacturers of NTC thermistor. EPCOS part number for
reference only B57164K153J (15kΩ @ 25°C). Murata part number for reference only - NCP03XH223J05RL (22kΩ
@ 25°C)
Note 3: Graphs for reference. The derating limits can be programmed using the OT Linear Handheld Programmer
Derating start = 6.3kΩ; Derating end = 4.3kΩ; Min output level = 10%
CONSTANT LUMEN MAINTENANCE
The Constant Lumen Maintenance feature of the OTi 48W helps to maintain the required lumen output of the fixture
at a cons tant lev el through out its l ifetime. In general, LED’s l umen outp ut will d epreciate over tim e and in order to
maintain s uff icient l ight l evel to wards the en d of l ifeti m e, the LEDs are dr iven at high c urre nt ini tiall y and will r esult
in mor e energy consum ption. T he constant lum en mainten ance wil l give the flex ibilit y to drive the LEDs a t optim al
driving current throughout its lifetime. This helps in energy savings, constant light output and enhanced reliability of
the system.
Note 4
: A detailed step-by-step instructions are outlined in the OT Programmer User Manual V2.4
0
20
40
60
80
100
44.555.566.5
% Of Output Current
RNTC in kΩ
ECS288 6/2016 9
END-OF-LIFE INDICA TOR
The End-of-Life indicator helps the end user to receive a signal from the fixture indicating that it has reached its
programmed life-tim e. Af ter the LE D dr i ver r eaches t he pr ogrammed life-time, whenev er it is t urned ON, it sta ys at
‘Dim’ level (10%) for 10 minutes and reaches its appropriate level.
INRUSH CHARACTERISTICS
Vin
(V)
Ipeak
(A)
T (@ 50% of
Ipeak)
120 1.25 55µs
277 2.53 43µs
Complies to NEMA 410 inrush current requirements
DIMMER/SENSOR COMPATIBILITY
Manufacturer
Part no
OSRAM
ZBHA-CLM DIM (NAED: 45678)
Encelium EMS
EN-LCM-1R10V-GB2-BK
EN-LCM-1R10V-GB2-BK/DR
EN-ALC-1R10V-GB2-BK
EN-ALC-1R10V-GB2-BK-DR
Leviton
IP710-DLX
Lutron
DVTV-XX
Wattstopper
ADF-120277
Synergy lighting Controls
ISD BC
Wattstopper
FD-301
Enlighted Inc.
SU-3E-00 (Enlighted Compact Sensor)
Note 5: The absence of a dimmer from this chart does not necessarily imply incompatibility. Please reference the
dimmer manufacturer’s instructions for installation.
UL CONDITIONS OF ACCEPTABILITY (E320395)
Conditions of Acceptability – When installed in the end-product, consideration shall be given to the following:
• The LED driver was evaluated using an electronic LED load resulting in an output rated current and rated pow er
as indicated in the electrical ratings.
• The unit em ploys a Clas s B is olat ion trans former (T1) on th e m ain PW B. T he need to repe at th e Tem per ature
Test shall be determined in end-use product. Tc point case temperatures in the end-use shall not exceed 90⁰C.
• The unit was tested on a 20A branch circuit. If used on a branch circuit greater than this, additional testing may
be necessary.
• The PWB spacing for use in Damp locations have been evaluated to UL 8750. The unit is completely potted on
the bottom and partially potted on the top. Areas t hat are potted m eet spacing requirements are out of T able
7.4 Parts Potted or subsequently coated. Other areas meet applicable requirements in Table 7.4.
• The Leakage current test was conducted between the ground terminal, exposed conductive surface and the
grounded pole of the supply circuit.
• These products are intended for use in Dry and Damp locations. The use in other environmental locations shall
be considered in the end product.
ECS288 6/2016 10
• For models with rated output voltage above 30V rms (42.4V peak) suitability shall be determined in the cUL
end-use applica tio n bas ed on acces s ib ilit y to the user.
• These tes t conditions are for T L rating: This model w as tested in a 40°C am bient. For T ref. values se e Table
below. Determination to repeat the temperature test shall be made in end-use product. During the normal
tem perature tes t of the end product, the tem perature a t an y point on the c ase is t o be m onitor ed and sh all n ot
exceed 90°C. When provided, the Tc in a circle can be considered a reference hot spot on the case:
Product
T ref Max
Tref – measured @ 40C
OTi 48/120-277/2A0 DIM L *
90°C
77°C
*Applies to DIM or DIM-1 and may be followed by AUX
WARRANTY
OPTOTRONIC® products are covered by our LED Module, OPTOTRONIC Power Supply or Control Warranty. For
additional details, refer to the latest version of the warranty (LED395) available at www.osram-
americas.com/optotronic.
© 2016 OSRAM SYLVANIA Inc.
OSRAM and OPTOTRONIC are registered trademarks of OSRAM GmbH.
Specifications subject to change without notice.
OSRAM SYLVANIA Inc.
200 Ballardvale Street
Wilmington, MA 01887 USA
877-636-5267
ds.info@osram.com
www.osram-americas.com