How to Use POWER SUPPLY 24v 350w: Examples, Pinouts, and Specs

The Meanwell POWER SUPPLY 24v 350w is a high-performance, reliable power supply designed to convert electrical energy into a stable 24V DC output. With a maximum power output of 350 watts, this power supply is ideal for powering a wide range of electronic devices and systems. Its robust design ensures consistent performance, making it suitable for industrial, commercial, and hobbyist applications.

• Industrial automation systems
• LED lighting and signage
• CNC machines and 3D printers
• Robotics and motor controllers
• Laboratory equipment and testing setups
• DIY electronics projects requiring a stable 24V power source

The following table outlines the key technical specifications of the Meanwell POWER SUPPLY 24v 350w:

The power supply features screw terminal connections for input and output. Below is the pin configuration:

1. Input Connection:

   • Connect the AC input terminals (L and N) to a suitable AC power source within the specified input voltage range (85-264 VAC).
   • Ensure the FG terminal is connected to the earth ground for safety.

2. Output Connection:

   • Connect the V+ and V- terminals to the load requiring 24V DC.
   • Use appropriately rated wires to handle the maximum output current (14.6A).

3. Adjusting Output Voltage:

   • The power supply includes a small potentiometer near the output terminals for fine-tuning the output voltage (±10% adjustment range).

4. Mounting:

   • Secure the power supply in a well-ventilated area to prevent overheating.
   • Ensure proper clearance around the unit for airflow.

• Load Requirements: Ensure the connected load does not exceed the maximum power rating of 350W.
• Ventilation: Avoid enclosing the power supply in a confined space without proper ventilation.
• Safety: Always disconnect the power supply from the mains before making any connections or adjustments.
• Fusing: Use an appropriate fuse on the input side to protect against overcurrent conditions.

The Meanwell POWER SUPPLY 24v 350w can be used to power an Arduino UNO via a step-down voltage regulator (e.g., LM2596) to convert 24V to 5V. Below is an example circuit and Arduino code:

1. Connect the power supply's V+ and V- terminals to the input of the step-down regulator.
2. Adjust the regulator to output 5V.
3. Connect the regulator's output to the Arduino UNO's 5V and GND pins.

// Example code to blink an LED connected to pin 13 of the Arduino UNO
// Ensure the power supply is properly connected to the Arduino via a step-down regulator

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:

   • Check the AC input connections (L and N) and ensure the power supply is receiving power.
   • Verify that the FG terminal is properly grounded.
   • Inspect the load connections and ensure there are no short circuits.

2. Overheating:

   • Ensure the power supply is installed in a well-ventilated area.
   • Check that the load does not exceed the maximum power rating of 350W.

3. Output Voltage Fluctuations:

   • Verify that the input voltage is within the specified range.
   • Check for loose connections on the output terminals.
   • Adjust the output voltage potentiometer if necessary.

4. Power Supply Shuts Down:

   • This may be due to overload, overvoltage, or overtemperature protection being triggered.
   • Reduce the load or allow the power supply to cool down before restarting.

Q: Can this power supply be used outdoors?
A: No, the Meanwell POWER SUPPLY 24v 350w is not waterproof and should only be used in dry, indoor environments.

Q: How do I know if the power supply is overloaded?
A: The power supply will automatically shut down if the load exceeds its maximum power rating. Reduce the load and restart the unit.

Q: Can I connect multiple devices to the power supply?
A: Yes, as long as the total current draw does not exceed 14.6A.

Q: Is the output voltage adjustable?
A: Yes, the output voltage can be fine-tuned using the built-in potentiometer near the output terminals.