1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the OSRAM OPTOTRONIC OT 55W/UNV/1A2 CS DIM L LED Driver. This is a 55W constant current, 0-10V dimmable LED driver designed for universal input voltage (120-277V AC) applications. Please read this manual thoroughly before installation and retain it for future reference.
2. Safety Information
WARNING: Risk of electric shock. Installation and servicing should only be performed by qualified personnel. Disconnect power before installation or servicing.
- Ensure all wiring complies with national and local electrical codes.
- Do not exceed the specified input voltage or output current/voltage ratings.
- This device is designed for dry and damp locations. Do not expose to direct water spray or immersion.
- The driver features UL Class 2 output for safe operation and is Class P rated.
- Verify proper grounding to prevent electrical hazards.
3. Setup and Installation
Follow these steps for proper installation of the LED driver:
- Power Disconnection: Ensure the main power supply to the installation area is turned off at the circuit breaker before beginning any wiring.
- Mounting: Securely mount the LED driver in a suitable enclosure or fixture, ensuring adequate ventilation. The product dimensions are approximately 11.00" L x 1.14" W x 1.00" H.
- Input Wiring (AC): Connect the AC input wires to the driver's input terminals. The driver accepts a universal input voltage of 120-277V AC, 50/60Hz. Refer to the wiring diagram below for terminal identification.
Image: Input terminals for AC power connection. Black wire for Line, White wire for Neutral.
- Output Wiring (DC): Connect the LED load to the driver's DC output terminals. The output voltage range is 20-46V DC. The output current can be set to 800mA, 1000mA, or 1200mA. Ensure the LED load's voltage and current requirements match the driver's output.
Image: Output terminals for DC LED load connection. Red wire for positive (+), Blue wire for negative (-).
- Dimming Control Wiring (0-10V): Connect the 0-10V dimming control wires to the dedicated dimming terminals. The dimming input is isolated and can use Class 2 or non-Class 2 wiring. The dimming range is 10-100%.
Image: Comprehensive wiring diagram for the OSRAM OPTOTRONIC LED Driver, illustrating connections for AC input (Black/White), DC output (Red/Blue), and 0-10V dimming (Purple/Gray).
- Current Selection: The driver features an external current set. Consult the product datasheet or specific fixture instructions for how to select the desired output current (800mA, 1000mA, or 1200mA) if applicable.
- Power Restoration: Once all connections are secure and verified, restore power to the circuit.
4. Operating Instructions
The OSRAM OPTOTRONIC LED driver operates automatically once properly installed and powered.
- Power On/Off: The LED load will illuminate when AC power is supplied to the driver.
- Dimming: Use a compatible 0-10V dimming control system to adjust the light output. The driver supports dimming from 10% to 100% of its maximum output.
- Current Output: The driver provides a constant current output, which is pre-set or externally selectable (800mA, 1000mA, or 1200mA) to match the requirements of the connected LED module.
5. Maintenance
The OSRAM OPTOTRONIC LED driver is designed for long-term, maintenance-free operation.
- Cleaning: Ensure the driver remains free of dust and debris to maintain optimal thermal performance. Disconnect power before cleaning. Use a dry, soft cloth.
- No User-Serviceable Parts: The driver contains no user-serviceable parts. Do not attempt to open or repair the unit. Doing so will void the warranty and may pose a safety risk.
- Inspection: Periodically inspect wiring for any signs of damage or loose connections.
6. Troubleshooting
If you experience issues with your LED driver, refer to the following common troubleshooting steps:
- No Light Output:
- Verify that AC input power is supplied to the driver.
- Check all wiring connections (input, output, dimming) for proper contact and polarity.
- Ensure the LED load is correctly connected and not faulty.
- Confirm the output current setting matches the LED load requirements.
- Flickering or Unstable Light:
- Check for loose wiring connections.
- Verify the dimming control signal is stable and within the 0-10V range.
- Ensure the LED load is compatible with the driver's output specifications.
- Dimming Not Working:
- Confirm the 0-10V dimming wires are correctly connected to the driver's dimming terminals.
- Check the functionality of the 0-10V dimming controller.
- Ensure the dimming range (10-100%) is being respected by the controller.
If problems persist after performing these checks, contact a qualified electrician or OSRAM technical support.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | 57438 (OT 55W/UNV/1A2 CS DIM L) |
| Input Voltage | 120-277V AC (Universal), 50/60 Hz |
| Max. Output Power | 55W |
| Output Voltage | 20-46V DC |
| Output Current | 800mA / 1000mA / 1200mA (Selectable) |
| Dimming Control | 0-10V (Isolated, Class 2 or non-Class 2 wiring) |
| Dimming Range | 10-100% |
| Product Dimensions (L x W x H) | 11.00" x 1.14" x 1.00" |
| Weight | Approximately 8.4 ounces |
| UL Environmental Rating | Dry & Damp |
| Safety Compliance | UL Class 2 output, Class P |
8. Warranty and Support
For warranty information, technical support, or further product documentation, please refer to the official OSRAM website or contact your local distributor.
- Official OSRAM Product Information: www.osram.us/ds
- For eldoLED products (related to Acuity Brands integration): www.eldoLED.com
