How to Use ELG-150-12DA: Examples, Pinouts, and Specs

The ELG-150-12DA is a 150W LED driver designed to provide a stable 12V DC output for powering LED lighting systems. This high-performance driver is known for its compact design, high efficiency, and robust build quality. It is suitable for both indoor and outdoor applications, thanks to its IP67-rated enclosure and comprehensive protection features, including over-voltage, over-current, and short-circuit safeguards.

• LED strip lighting for residential and commercial spaces
• Outdoor LED lighting systems, such as streetlights and signage
• Industrial lighting applications requiring high reliability
• Architectural lighting installations
• Any 12V DC-powered LED system requiring a constant voltage source

The ELG-150-12DA is engineered to meet the demands of modern LED lighting systems. Below are its key technical specifications:

The ELG-150-12DA has input and output wiring for AC and DC connections, as well as dimming control. Below is the pin configuration:

1. Input Connection: Connect the black (AC Line) and white (AC Neutral) wires to the AC power source. Ensure the input voltage is within the range of 100–305V AC.
2. Output Connection: Connect the red (DC Positive) and black (DC Negative) wires to the LED load. Ensure the total load does not exceed 150W.
3. Dimming Control (Optional):
   • For 0–10V dimming, connect a 0–10V dimmer to the DIM+ (white) and DIM- (blue) wires.
   • For PWM dimming, connect a PWM signal (frequency: 100–3kHz) to the DIM+ and DIM- wires.
   • For resistive dimming, connect a variable resistor (100kΩ max) between DIM+ and DIM-.
4. Grounding: Connect the green/yellow wire to earth ground for safety.

• Load Matching: Ensure the total power of the connected LED load does not exceed 150W to avoid overloading the driver.
• Ventilation: Install the driver in a well-ventilated area to prevent overheating.
• Waterproofing: For outdoor use, ensure all connections are properly sealed to maintain the IP67 rating.
• Dimming Compatibility: Verify that the dimming control method (0–10V, PWM, or resistor) is compatible with your dimmer or control system.
• Polarity: Double-check the polarity of the DC output connections to avoid damaging the LED load.

The ELG-150-12DA can be dimmed using a PWM signal from an Arduino UNO. Below is an example setup and code:

1. Connect the Arduino's GND pin to the DIM- (blue) wire of the driver.
2. Connect a PWM-capable pin (e.g., pin 9) of the Arduino to the DIM+ (white) wire of the driver.
3. Ensure the Arduino and the driver share a common ground.

// Example code to control the ELG-150-12DA using PWM from an Arduino UNO

const int pwmPin = 9; // PWM-capable pin connected to DIM+ of the driver

void setup() {
  pinMode(pwmPin, OUTPUT); // Set the PWM pin as an output
}

void loop() {
  // Gradually increase brightness
  for (int brightness = 0; brightness <= 255; brightness++) {
    analogWrite(pwmPin, brightness); // Write PWM signal to DIM+
    delay(10); // Small delay for smooth dimming
  }

  // Gradually decrease brightness
  for (int brightness = 255; brightness >= 0; brightness--) {
    analogWrite(pwmPin, brightness); // Write PWM signal to DIM+
    delay(10); // Small delay for smooth dimming
  }
}

1. No Output Voltage

   • Cause: Incorrect AC input wiring or no AC power.
   • Solution: Verify the AC input connections and ensure the power source is active.

2. LEDs Flicker

   • Cause: Incompatible dimming signal or unstable input voltage.
   • Solution: Check the dimming control signal and ensure it matches the driver's specifications. Verify the input voltage is stable.

3. Driver Overheats

   • Cause: Insufficient ventilation or excessive load.
   • Solution: Ensure the driver is installed in a well-ventilated area and the load does not exceed 150W.

4. Dimming Does Not Work

   • Cause: Incorrect dimming connections or incompatible dimmer.
   • Solution: Verify the dimming wires are correctly connected and the dimmer is compatible with the driver's dimming methods.

• Can I use the ELG-150-12DA with a 24V LED load?

  • No, the driver is designed for 12V LED loads only. Using a 24V load may damage the LEDs or the driver.

• Is the driver suitable for outdoor use?

  • Yes, the IP67 rating ensures the driver is dust-tight and waterproof, making it suitable for outdoor applications.

• What happens if the load exceeds 150W?

  • The driver includes over-current protection and will shut down to prevent damage. Reduce the load to within the specified limit.

• Can I use a microcontroller other than Arduino for dimming?

  • Yes, any microcontroller capable of generating a 0–10V, PWM, or resistive dimming signal can be used. Ensure compatibility with the driver's dimming specifications.