OSRAM OTi180W OPTOTRONIC LED Power Supply Owner’s Manual

: June 10, 2024
: OSRAM

OSRAM OTi180W OPTOTRONIC LED Power Supply

General Information

Item Number	57538
Type	Constant Current
Output Power	180W (Max.)
Programming Tool	51645
Software	Download
Programmable Features	Output Current Dimming level

Configurable thermal protection AstroDIM

Environmental Specifications

Ambient Operating Temperature	-40ºC to 55ºC
Case Temperature (Tc)	85ºC1

90ºC (max)

Max. Storage Temp.| 70ºC
Max. Relative Humidity (%)| 95% non-condensing
Transient Protection| ANSI C62.41 Cat B

6.0kV, 4kV EFT

IP Rating| IP66
UL Environmental Rating| UL Class P, Dry & Damp

Type HL

UL File number| E320395
__ EMI Compliance FCC 47 Part 15 Class A
Sound Rating| Class A

Electrical Specifications

Input

Input Voltage (VAC)	120V-277V (+/- 10%)
Frequency Range (Hz)	50 – 60 Hz (+/- 10%)
	120V
Input Current (A)	1.65
THD @ Full load	<10%
Power Factor @ Full load	>0.9
Efficiency @ Full load	>90%
Inrush Current (Apk)	42A, 412µs

Output

Output Current (mA)	1000-1800mA (1mA step)
Output Voltage (VDC)	50-150VDC
Output Ripple Current	< 20% @ 1800mA
Max. Output Power (W)	180W
LED Power-Up Time	<1 sec
Load Regulation	<3%
Line Regulation	<3%
Over Voltage Protection	Yes
Over Load Protection	Current fold back @183W, non-latching
Output Short-Circuit Protection	Yes, non-latching

Dimming

Dimming Control	0 – 10V (Isolated)2 AstroDIM
Dimming Range	10-100%
Dimming Type	Analog
Source/Sink Current	0.8mA

LED thermal protection (NTC)

NTC Value Active Range	≤25kΩ
Temperature Derating start	User defined

External NTC cannot leave the fixture
The PRG/ NTC control circuit terminals or lead wires are not isolated

Wiring Diagram

Mechanical Diagram

Mechanical Specification

Length	9.47” (240.5mm)
Width	2.36” (59.9 mm)
Height	1.5” (38.1mm)
Mounting Length	8.9” (226.3mm)
Mounting slot width	0.34“ (8.7mm)

Operating Range

Dimming Curve

Efficiency vs Output Voltage

Power Factor Performance

THD Performance

LED Thermal Protection (NTC) Characteristic

The LED thermal protection feature of the OT180W helps reduce the temperature of the LED module by 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.
$LED Thermal Protection $NTC$ Characteristic$

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)

For detailed information on LED Thermal Protection, please refer to Technical Application guide (ECS 304)

Note: Graphs for reference. The de-rating limits can be programmed using the OT Programmer

Derating start = 6.3kΩ; Derating end = 4.3kΩ; Min output level = 10%
$LED Thermal Protection $NTC$ Characteristic$

End-of-Life Indicator

The End-of-Life indicator feature helps the end user to receive a signal from the fixture indicating that it has reached its programmed life-time. After the LED driver reaches the programmed life-time, whenever it is turned ON, it stays at ‘Dim’ level (10%) for 10 minutes and reaches its appropriate level.

AstroDIM

AstroDIM is an autonomous five level (1 Power ON & 4 Dimming levels) dimming protocol. It provides multi-stage night-time power reduction based on an internal timer; there is no need for an external control infrastructure. The ECG is automatically aligned to the on and off times for the street lighting and provide a defined output for the particular period of time. Compared with conventional systems there are significant cost savings. AstroDIM is designed for dimming without any external control wiring. Therefore, AstroDIM helps to save energy, extend the life of the driver and the LED module and reduce light pollution, even if only a power line is available. In AstroDIM operation, the driver executes a preset dimming profile, which can be reconfigured via the OT Programming Tool. The autonomous dimming is regulated by an integrated timer (no real-time clock), which adjusts the dimming profile according to the previous night (operation from switch-on to switch-off).

For detailed information on AstroDIM please refer to Technical Application guide 2DIM feature (LED 408)

Constant Lumen Maintenance

The Constant Lumen Maintenance feature of the OT180W helps to maintain the required lumen output of the fixture at a constant level throughout its lifetime. In general LED’s lumen output will depreciate over time and in order to maintain sufficient light level towards the end of lifetime, the LED’s are driven at high current initially and will result in more energy consumption.

The constant lumen maintenance will give the flexibility to drive the LEDs at optimal driving current throughout its lifetime. This helps in energy savings, constant light output and enhanced reliability of the system.

Note: A detailed step-by-step instructions are outlined in the ‘OT Programmer User Manual V2.1’

Dimmer Compatibility

Manufacturer	Part Number
OSRAM	EN-LCM-1R10V-GB2-BK

EN-LCM-1R10V-GB2-BK/DR EN-ALC-1R10V-GB2-BK

EN-ALC-1R10V-GB2-BK-DR

Note: The absence of a dimmer from this chart does not necessarily imply incompatibility. Please reference the dimmer manufacturer’s instructions for installation.

Lifetime vs Case Temperature

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 (LED089) available at www.osram.us/optotronic

Customer Service

OSRAM SYLVANIA Inc.
200 Ballardvale Street
Wilmington, MA 01887
USA 877-636-5267
www.osram.us/ds
ECS-OT450 08/21
OSRAM and OPTOTRONIC are registered trademarks of OSRAM GmbH.
Specifications subject to change without notice.
© 2021 OSRAM SYLVANIA Inc