How to Use MeanWell HDR-15-12: Examples, Pinouts, and Specs

The MeanWell HDR-15-12 is a compact, 15W DIN rail power supply designed for industrial applications. It provides a stable 12V DC output and is known for its high efficiency, reliability, and wide input voltage range. Its slim design makes it ideal for space-constrained installations, and it is compatible with standard DIN rail mounting systems.

• Industrial control systems
• Building automation
• Security and surveillance systems
• IoT devices and gateways
• LED lighting systems
• Home automation setups

The HDR-15-12 features screw terminal connections for input and output. Below is the pin configuration:

1. Mounting: Secure the HDR-15-12 onto a standard DIN rail (TS-35/7.5 or TS-35/15).
2. Input Connection:
   • Connect the AC line (L) and neutral (N) wires to the input terminals.
   • Ensure the input voltage is within the specified range (85-264V AC or 120-370V DC).
3. Output Connection:
   • Connect the load to the +V and -V terminals.
   • Ensure the load does not exceed the maximum output current of 1.25A.
4. Grounding:
   • Properly ground the unit using the grounding terminal on the chassis to ensure safety and reduce electrical noise.
5. Power On:
   • After verifying all connections, power on the unit and check the output voltage using a multimeter.

• Ventilation: Ensure adequate airflow around the power supply to prevent overheating.
• Load Requirements: Do not exceed the rated output power of 15W to avoid triggering the overload protection.
• Safety: Always disconnect power before making any wiring changes.
• Surge Protection: Use surge protection devices to safeguard the power supply from voltage spikes.

The HDR-15-12 can be used to power an Arduino UNO by providing a stable 12V DC output. Below is an example wiring setup:

1. Connect the +V terminal of the HDR-15-12 to the VIN pin of the Arduino UNO.
2. Connect the -V terminal of the HDR-15-12 to the GND pin of the Arduino UNO.
3. Ensure the HDR-15-12 is properly grounded and powered.

Here is a simple Arduino sketch to blink an LED, powered by the HDR-15-12:

// Blink an LED connected to pin 13 of the Arduino UNO
// Ensure the Arduino is powered by the HDR-15-12 via the VIN and GND pins

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

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-15-12 be used outdoors?

   • No, the HDR-15-12 is not weatherproof and should only be used in indoor environments or within a protective enclosure.

2. What happens if the load exceeds 15W?

   • The HDR-15-12 has overload protection and will shut down to prevent damage. Reduce the load and restart the unit.

3. Can I use the HDR-15-12 to power sensitive electronics?

   • Yes, the HDR-15-12 provides a stable 12V DC output suitable for most sensitive electronics.

4. Is the HDR-15-12 compatible with 24V systems?

   • No, the HDR-15-12 is designed for 12V DC output. For 24V systems, consider using the HDR-15-24 model.

By following this documentation, users can effectively integrate the MeanWell HDR-15-12 into their projects and ensure reliable operation.