1. Introduction
The ELG-300 series is a 300W LED driver designed for constant voltage and constant current mode applications. This model, the ELG-300-24A, operates from 100-305VAC input and provides a 24V DC output at 12.5A. Its high efficiency, up to 94%, combined with a fanless design, allows for operation in ambient temperatures ranging from -40°C to +85°C (case temperature) under free air convection. The robust metal housing and IP67 ingress protection rating make this series suitable for both indoor and outdoor installations, providing reliable performance in various environments.
2. Safety Information
Please read and understand all instructions before installation and operation. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Qualified Personnel: Installation and servicing should only be performed by qualified electricians.
- Power Disconnection: Always disconnect power at the circuit breaker before installing or servicing the unit.
- Proper Grounding: Ensure the unit is properly grounded according to local electrical codes.
- Ventilation: Although fanless, ensure adequate air circulation around the unit to prevent overheating.
- Environmental Conditions: Do not exceed the specified operating temperature range or expose the unit to corrosive environments.
- Wiring: Use appropriate gauge wiring for input and output connections to handle the specified current.
3. Features
- ELG-300-24A: 24V DC, 12.5A, 300W Adjustable LED Driver
- Constant Voltage + Constant Current mode output
- Protection functions: Over Current Protection (OCP), Short Circuit Protection (SCP), Over Voltage Protection (OVP), Over Temperature Protection (OTP)
- IP67 rating for indoor or outdoor installations, providing protection against dust and water immersion.
- Output adjustable via built-in potentiometer
- Typical lifetime: >50,000 hours
4. Applications
The ELG-300-24A LED driver is suitable for a wide range of LED lighting applications, including:
- LED stage lighting
- LED strip lighting
- LED bay lighting
- LED flood lighting
- DMX control systems
5. Product Overview
The ELG-300-24A features a robust metal casing with clearly labeled input and output connections. The unit includes a potentiometer for output adjustment.
Figure 5.1: Front view of the ELG-300-24A LED Power Supply, showing input (ACN, ACL, PE) and output (Vo+, Vo-) terminals, along with model number and specifications label.
Figure 5.2: Mechanical specifications and wiring diagram for the ELG-300 series, illustrating dimensions and cable connections for AC input (ACN, ACL, PE) and DC output (Vo+, Vo-).
6. Setup and Installation
6.1 Wiring Instructions
- Input Connection (AC): Connect the AC input wires to the designated terminals. The blue wire (ACN) is for Neutral, the brown wire (ACL) is for Line, and the green/yellow wire (PE) is for Protective Earth. Ensure all connections are secure and properly insulated.
- Output Connection (DC): Connect the DC output wires to your LED load. The black wire (Vo-) is for the negative terminal, and the red wire (Vo+) is for the positive terminal. Observe correct polarity to prevent damage to the LED luminaires.
- Cable Specifications: The input cable is SJOW 17AWG x 3C, and the output cable is SJOW 14AWG x 2C. Ensure these cables are not damaged and are suitable for your installation environment.
6.2 Mounting
The ELG-300-24A is designed for versatile mounting due to its IP67 rating. It can be installed in both indoor and outdoor locations. Refer to Figure 5.2 for mechanical dimensions and mounting hole locations. Ensure the mounting surface is stable and can support the unit's weight (approximately 3.74 pounds).
6.3 Output Adjustment
The ELG-300-24A features a built-in potentiometer for adjusting the output voltage and current. This allows for fine-tuning the power supply to match specific LED load requirements. Use a suitable tool to carefully adjust the potentiometer. Refer to the product label (Figure 5.1) for the exact location of the adjustment screw.
7. Operating Instructions
7.1 Powering On/Off
Once all connections are securely made and verified, apply AC power to the input terminals. The LED driver will power on and provide regulated DC output. To power off, disconnect the AC input power.
7.2 Constant Voltage (CV) and Constant Current (CC) Modes
The ELG-300-24A operates in both Constant Voltage (CV) and Constant Current (CC) modes. The mode of operation depends on the load connected and the output adjustment settings.
Figure 7.1: Block Diagram of the ELG-300 series and a graph illustrating the Constant Voltage (A) and Constant Current (B) operating regions, along with Hiccup Protection (C).
In the constant current region, the highest voltage at the output of the driver depends on the configuration of the end systems. For compatibility issues, consult the manufacturer.
8. Maintenance
The ELG-300-24A LED driver is designed for long-term, reliable operation with minimal maintenance. Due to its IP67 rating, it is protected against dust and water ingress.
- Cleaning: Periodically inspect the unit for any accumulation of dust or debris, especially around cooling surfaces. Clean with a soft, dry cloth. Do not use liquid cleaners.
- Cable Inspection: Regularly check input and output cables for any signs of wear, damage, or loose connections. Replace damaged cables immediately.
- Environmental Check: Ensure the operating environment remains within specified temperature and humidity limits.
9. Troubleshooting
If you encounter issues with your ELG-300-24A LED power supply, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No output voltage/LEDs not lighting | No AC input power Loose wiring connections Overload protection (OCP) activated Short circuit in output Over temperature protection (OTP) activated | Check AC power source and circuit breaker. Verify all input and output wiring connections. Reduce load or check for short circuits in the LED system. Inspect output wiring for short circuits. Ensure adequate ventilation; allow unit to cool down. |
| Flickering or unstable output | Input voltage fluctuations Incorrect load matching Faulty LED load | Ensure stable AC input voltage within specified range. Verify the LED load is compatible with the driver's CV/CC characteristics. Test with a known good LED load. |
| Unit is hot to the touch | Insufficient ventilation Overload condition High ambient temperature | Ensure proper airflow around the unit. Reduce the connected load. Verify ambient temperature is within operating limits. |
If the problem persists after following these steps, contact customer support.
10. Specifications
Detailed specifications for the ELG-300-24A LED Power Supply are provided below:
Figure 10.1: Comprehensive specifications table for the ELG-300-24A, including input, output, protection, and environmental data.
| Parameter | Value |
|---|---|
| Model Number | ELG-300-24A |
| Output Voltage | 24V DC |
| Output Current | 12.5A |
| Output Power | 300W |
| Input Voltage Range | 100-305VAC |
| Efficiency | Up to 94% |
| IP Rating | IP67 (Waterproof) |
| Protection Functions | OCP, SCP, OVP, OTP |
| Operating Temperature | -40°C to +85°C (case temperature) |
| Dimensions (L x W x H) | 9.69 x 3.03 x 1.56 inches (246 x 77 x 39.5 mm) |
| Item Weight | 3.74 pounds (1.7 kg) |
| Lifetime | >50,000 hours |
| Power Source | Corded Electric |
| Current Rating | 12.5 Amps |
| UPC | 770523581453 |
11. Warranty
This product comes with a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by improper installation, misuse, accidents, unauthorized repairs, or modifications. Please retain your proof of purchase for warranty claims.
12. Customer Support
For technical assistance, troubleshooting not covered in this manual, or warranty inquiries, please contact your retailer or the manufacturer directly. Have your product model number (ELG-300-24A) and proof of purchase ready when contacting support.