How to Use Mean Well HDR-30-5: Examples, Pinouts, and Specs

The Mean Well HDR-30-5 is a 30W, 5V, single-output DIN rail power supply designed for industrial and automation applications. Its compact design and high efficiency make it ideal for use in space-constrained environments. The HDR-30-5 is equipped with built-in protections, including short circuit, overload, and overvoltage protection, ensuring reliable operation in demanding conditions.

• Industrial control systems
• Building automation
• Factory automation equipment
• IoT devices and sensors
• LED lighting systems
• Security and surveillance systems

The following table outlines the key technical specifications of the Mean Well HDR-30-5:

The HDR-30-5 features screw terminal connections for input and output. The pin configuration is as follows:

1. Mounting: Securely mount the HDR-30-5 on a 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 ~ 264VAC).
3. Output Connection:
   • Connect the load to the +V and -V output terminals.
   • Verify that the load does not exceed the maximum output current (4.5A).
4. Power On:
   • After verifying all connections, power on the AC supply.
   • The HDR-30-5 will provide a stable 5V DC output to the connected load.

• Ventilation: Ensure adequate ventilation around the power supply to prevent overheating.
• Load Requirements: Do not exceed the maximum output power of 30W to avoid triggering overload protection.
• Wiring: Use appropriately rated wires for both input and output connections.
• Grounding: Proper grounding is recommended to ensure safety and reduce electrical noise.
• Testing: Before connecting sensitive devices, test the output voltage with a multimeter to confirm proper operation.

The HDR-30-5 can be used to power an Arduino UNO. Follow these steps:

1. Connect the +V terminal of the HDR-30-5 to the Arduino's 5V pin.
2. Connect the -V terminal of the HDR-30-5 to the Arduino's GND pin.
3. Ensure the HDR-30-5 is powered on and providing a stable 5V output.

Here is an example Arduino sketch to blink an LED when powered by the HDR-30-5:

// Blink an LED connected to pin 13
// Ensure the Arduino is powered by the HDR-30-5 (5V DC)

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. No Output Voltage:

   • Cause: Input voltage is not within the specified range.
   • Solution: Verify the AC input voltage and ensure proper wiring.

2. Overload Protection Triggered:

   • Cause: Load exceeds the maximum output power (30W).
   • Solution: Reduce the load to within the specified limits.

3. Overheating:

   • Cause: Insufficient ventilation or operation in high-temperature environments.
   • Solution: Improve airflow around the power supply or operate within the recommended temperature range.

4. Intermittent Output:

   • Cause: Loose connections or fluctuating input voltage.
   • Solution: Check all connections and ensure a stable input voltage.

Q1: Can the HDR-30-5 be used outdoors?
A1: No, the HDR-30-5 is not weatherproof and should only be used in indoor environments or within a protective enclosure.

Q2: What happens if the load exceeds 4.5A?
A2: The HDR-30-5 will activate overload protection, shutting down the output to protect the device and connected equipment.

Q3: Can I use the HDR-30-5 with DC input?
A3: Yes, the HDR-30-5 supports a DC input range of 120 ~ 370VDC.

Q4: Is the HDR-30-5 suitable for sensitive electronics?
A4: Yes, the HDR-30-5 provides a stable 5V DC output, making it suitable for powering sensitive electronics like microcontrollers and sensors.