How to Use DIN Rail 5v 2.4a Power Supply: Examples, Pinouts, and Specs

The Meanwell HDR-15-5 is a compact and efficient DIN rail-mounted power supply unit (PSU) designed to provide a stable 5V output with a current capacity of 2.4A. This power supply is ideal for industrial and automation applications where reliable and consistent power is crucial. Its slim design allows for easy integration into control panels and other industrial equipment.

1. Mounting the Power Supply:

   • Securely mount the HDR-15-5 on a DIN rail in your control panel or enclosure.

2. Connecting AC Input:

   • Connect the AC line (L) and neutral (N) wires to the corresponding terminals on the power supply. Ensure the input voltage is within the specified range (85-264V AC).

3. Connecting DC Output:

   • Connect the +V terminal to the positive rail of your circuit and the -V terminal to the ground rail. Ensure the load does not exceed the maximum output current of 2.4A.

4. Powering Up:

   • Once all connections are secure, power up the AC input. The power supply will convert the AC input to a stable 5V DC output.

• Ventilation: Ensure adequate ventilation around the power supply to prevent overheating. Avoid placing it near heat sources.
• Load Capacity: Do not exceed the maximum output current of 2.4A to prevent damage to the power supply and connected devices.
• Wiring: Use appropriate wire gauges for AC input and DC output connections to handle the current load safely.
• Protection: Utilize fuses or circuit breakers on the AC input side to protect against overcurrent conditions.

1. No Output Voltage:

   • Check AC Input: Ensure the AC input voltage is within the specified range and properly connected.
   • Overload Protection: Verify that the connected load does not exceed 2.4A. Disconnect the load and check if the power supply resumes normal operation.

2. Intermittent Operation:

   • Overheating: Ensure adequate ventilation and check for any obstructions around the power supply.
   • Loose Connections: Verify all connections are secure and free from corrosion.

3. Output Voltage Fluctuations:

   • Input Voltage Stability: Ensure the AC input voltage is stable and within the specified range.
   • Load Variations: Check if the connected load is causing significant fluctuations. Use a more stable load if necessary.

Q: Can the HDR-15-5 be used with an Arduino UNO? A: Yes, the HDR-15-5 can be used to power an Arduino UNO. Connect the +V terminal to the 5V pin and the -V terminal to the GND pin on the Arduino.

Q: What type of DIN rail is compatible with the HDR-15-5? A: The HDR-15-5 is compatible with standard 35mm DIN rails.

Q: Is the HDR-15-5 protected against short circuits? A: Yes, the HDR-15-5 has built-in short circuit protection.

Below is an example code to demonstrate how to power an Arduino UNO using the HDR-15-5 power supply:

// Example code to blink an LED on Arduino UNO powered by HDR-15-5

const int ledPin = 13; // Pin number for the built-in LED

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

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

Note: Ensure the HDR-15-5 is properly connected to the Arduino UNO as described in the usage instructions.

This documentation provides a comprehensive overview of the Meanwell HDR-15-5 DIN Rail 5V 2.4A Power Supply, including its technical specifications, usage instructions, troubleshooting tips, and example code for Arduino UNO. Whether you are a beginner or an experienced user, this guide will help you effectively utilize the HDR-15-5 in your projects.