How to Use LRS-100-15 Power Supply: Examples, Pinouts, and Specs

The LRS-100-15 is a compact and highly efficient AC-to-DC power supply manufactured by Mean Well. It delivers a stable 15V DC output with a maximum current of 6.67A, making it suitable for a wide range of industrial and commercial applications. This power supply is designed with safety and reliability in mind, featuring protections against short circuits, overloads, and overvoltage conditions. Its slim and lightweight design ensures easy integration into various systems.

• Industrial automation equipment
• LED lighting systems
• Test and measurement devices
• Security and surveillance systems
• DIY electronics projects requiring a stable 15V power source

The LRS-100-15 features screw terminal connections for input and output. Below is the pin configuration:

1. Mounting the Power Supply: Secure the LRS-100-15 in a well-ventilated area to ensure proper cooling. Avoid enclosing it in a sealed box unless adequate airflow is provided.
2. Connecting the Input:
   • Connect the L terminal to the live AC line.
   • Connect the N terminal to the neutral AC line.
   • Connect the FG terminal to the earth ground for safety.
3. Connecting the Output:
   • Connect the V+ terminal to the positive side of your load.
   • Connect the V- terminal to the negative side of your load.
4. Adjusting the Output Voltage (if needed):
   • Use a small screwdriver to turn the V ADJ potentiometer. Turning clockwise increases the voltage, while counterclockwise decreases it. Ensure the output voltage remains within the acceptable range for your load.

• Input Voltage: Ensure the input voltage is within the specified range (85-264VAC). Operating outside this range may damage the power supply.
• Load Requirements: Do not exceed the maximum output current of 6.67A or the maximum power of 100W.
• Cooling: The LRS-100-15 relies on convection cooling. Ensure adequate airflow around the unit to prevent overheating.
• 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 LRS-100-15 can be used to power an Arduino UNO and other peripherals. Below is an example circuit and code:

1. Connect the V+ terminal of the LRS-100-15 to the VIN pin of the Arduino UNO.
2. Connect the V- terminal of the LRS-100-15 to the GND pin of the Arduino UNO.
3. Ensure the output voltage is set to 15V using the V ADJ potentiometer.

// Example code to blink an LED connected to pin 13 of the Arduino UNO
// Ensure the LRS-100-15 is providing a stable 15V to the Arduino's VIN pin

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 LRS-100-15 be used with a battery?

   • No, the LRS-100-15 is designed for AC input only and cannot be directly connected to a battery.

2. What is the maximum adjustable range for the output voltage?

   • The output voltage can be adjusted within ±10% of the nominal 15V, i.e., approximately 13.5V to 16.5V.

3. Is the LRS-100-15 suitable for outdoor use?

   • No, the LRS-100-15 is not weatherproof and should only be used in indoor environments or within a protective enclosure.

4. Can I use the LRS-100-15 to power multiple devices?

   • Yes, as long as the total current draw does not exceed 6.67A and the devices are compatible with a 15V DC supply.

This concludes the documentation for the Mean Well LRS-100-15 Power Supply. For further assistance, refer to the manufacturer's datasheet or contact technical support.