How to Use HDR 24V/15W/0.63A: Examples, Pinouts, and Specs

The HDR-15-24 by Mean Well is a high-density DIN rail power supply designed to deliver reliable 24V DC output with a maximum power of 15W and a current rating of 0.63A. This compact and efficient power supply is ideal for low-voltage applications, including industrial automation, building automation, and control systems. Its slim design allows for easy integration into space-constrained environments, making it a popular choice for modern electrical installations.

• Industrial control systems
• Building automation (e.g., HVAC, lighting control)
• Security systems and surveillance
• Home automation
• Low-voltage DC-powered devices

The HDR-15-24 features screw terminal connections for input and output. Below is the pin configuration:

1. Mounting: Secure the HDR-15-24 onto a standard DIN rail in your control panel or enclosure.
2. Input Connection:
   • Connect the AC line (L) and neutral (N) wires to the input terminals (pins 1 and 2).
   • Ensure the input voltage is within the specified range (85-264 VAC).
3. Output Connection:
   • Connect the load to the output terminals (pins 3 and 4).
   • Verify that the load does not exceed the maximum output current of 0.63A.
4. Power On:
   • After all connections are secure, power on the AC supply.
   • Measure the output voltage to confirm it is 24V DC before connecting sensitive devices.

• Ventilation: Ensure adequate airflow around the power supply to prevent overheating.
• Load Matching: Do not exceed the rated output power (15W) or current (0.63A) to avoid triggering the overload protection.
• Wiring: Use appropriately rated wires for both input and output connections to ensure safety and reliability.
• Grounding: Properly ground the system to minimize electrical noise and ensure safety.
• Testing: Before connecting sensitive equipment, test the output voltage with a multimeter to confirm proper operation.

The HDR-15-24 can be used to power an Arduino UNO or other microcontroller boards. Below is an example of how to connect it:

1. Connect the HDR-15-24's output terminals:
   • Pin 3 (+V) to the Arduino's VIN pin.
   • Pin 4 (-V) to the Arduino's GND pin.
2. Ensure the Arduino's input voltage range (7-12V recommended for VIN) is compatible with the HDR-15-24's 24V output. Use a DC-DC step-down converter to reduce the voltage to 9V or 12V if necessary.

// Example Arduino Code: Blink an LED
// This code assumes the Arduino is powered by the HDR-15-24 via a step-down converter.

void setup() {
  pinMode(13, OUTPUT); // Set pin 13 as an output for the onboard LED
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. Can the HDR-15-24 be used outdoors?

   • No, the HDR-15-24 is not weatherproof. It must be installed in a dry, indoor environment.

2. What happens if the load exceeds 15W?

   • The power supply will activate overload protection and shut down to prevent damage. Reduce the load and restart the power supply.

3. Can I use the HDR-15-24 to power multiple devices?

   • Yes, as long as the total current draw does not exceed 0.63A and the devices are compatible with 24V DC.

4. Is the HDR-15-24 compatible with battery charging?

   • It is not specifically designed for battery charging. Use a dedicated battery charger for such applications.

By following this documentation, users can safely and effectively integrate the HDR-15-24 into their projects and systems.