Instruction Manual

1. Product Overview

The OSRAM OPTOTRONIC OT 50W/UNV/1A4 CS L is a 50W constant current LED driver designed for various lighting applications. This non-dimmable linear driver features an external current set, allowing for flexible output current configurations. It operates on a universal input voltage range of 120-277V AC, making it suitable for a wide array of installations.

Key features include:

• OPTOTRONIC Current Select Driver
• Constant Current Non-dimmable LED Driver
• Input Voltage: 120-277VAC 50/60 Hz
• Output Power (Pout): 50W
• Output Voltage (Vout): 20-36VDC
• Output Current (Iout): Selectable between 1200mA, 1300mA, and 1400mA
• UL Class 2 output for safe operation, Class P rated

Figure 1: Top view of the OSRAM OPTOTRONIC OT 50W/UNV/1A4 CS L LED Driver, showcasing its compact linear form factor.

2. Installation and Setup

Proper installation is crucial for the safe and efficient operation of the LED driver. Always ensure power is disconnected before beginning any installation work. This device is designed for dry and damp locations.

2.1 Wiring Diagram

Refer to the wiring diagram below for correct electrical connections. The driver supports both configurations with and without dimming wires, though this specific model is non-dimmable. Ensure all connections are secure and comply with local electrical codes.

Figure 2: Detailed wiring diagram for the LED driver, showing input (Black, White, Green) and output (Yellow, Orange, Brown, Blue, Red) connections. Also includes current selection jumper settings and mechanical dimensions.

• Input Connections: Connect the Black wire to Line, White to Neutral, and Green to Ground.
• Output Connections: Connect the LED load to the Red (LED+) and Blue (LED-) wires. The Yellow, Orange, and Brown wires are for current selection.
• Wire Gauge: Use solid copper wire only (16-22 AWG).
• Strip Length: Strip all wires to 9-9.5mm (approximately 0.35-0.37 inches).
• Mounting: The maximum suggested remote mounting distance is 8 feet.

2.2 Current Selection

The output current of the driver can be selected by shorting specific output pins. This is done by installing a jumper wire between the designated pins. The jumper wire should be completely insulated and conductive parts must not be accessible when installed on the driver's output connector.

3. Operation

Once properly installed and the desired output current is selected, the LED driver will provide constant current to the connected LED load. This driver is non-dimmable, meaning its output intensity is fixed based on the selected current.

Ensure the connected LED module's voltage and current requirements are compatible with the driver's specifications to prevent damage and ensure optimal performance.

4. Maintenance

The OSRAM OPTOTRONIC LED driver is designed for long-term, reliable operation with minimal maintenance. However, periodic inspection can help ensure continued performance.

• Cleaning: Keep the driver free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
• Inspection: Periodically check wiring connections for tightness and signs of wear or damage. Ensure the driver's ventilation is not obstructed.
• Environment: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent premature failure.

5. Troubleshooting

If the LED driver or connected lighting system is not functioning as expected, consider the following common troubleshooting steps:

• No Light Output:
  • Verify that the input power supply is active and within the specified voltage range (120-277VAC).
  • Check all wiring connections for proper contact and polarity. Ensure no loose wires.
  • Confirm the LED load is correctly connected to the driver's output.
  • Ensure the LED module itself is functional.
• Incorrect Light Output (e.g., too dim):
  • Verify the current selection jumpers are correctly set for the desired output current (1200mA, 1300mA, or 1400mA).
  • Check if the LED module's forward voltage is within the driver's output voltage range (20-36VDC).
• Driver Overheating:
  • Ensure adequate ventilation around the driver.
  • Verify the ambient operating temperature is within the specified range (-20°C to 50°C).
  • Confirm the total power consumption of the LED load does not exceed the driver's maximum output power (50W).

If issues persist after performing these checks, it is recommended to contact a qualified electrician or the manufacturer's support.

6. Technical Specifications

Detailed technical specifications for the OSRAM OPTOTRONIC OT 50W/UNV/1A4 CS L LED Driver are provided below. These specifications are crucial for proper system design and compatibility.

Figure 3: Official technical specifications sheet, detailing general information, input/output electrical specifications, environmental specifications, and dimming capabilities.

6.1 Electrical Specifications

6.2 Environmental Specifications

7. Warranty and Support

Specific warranty details for the OSRAM OPTOTRONIC OT 50W/UNV/1A4 CS L LED Driver are not provided in the available product data. For warranty information, please refer to the official OSRAM website or contact your point of purchase.

For technical support, additional documentation, or inquiries, please visit the manufacturer's official resources:

• OSRAM Digital Systems: www.osram.us/ds
• eldoLED (related brand for LED drivers): www.eldoLED.com