How to Use Orin-TR 24 12-5: Examples, Pinouts, and Specs

The Orin-TR 24 12-5 is a high-quality transformer manufactured by Victron Energy. It is designed to step down a 24V input voltage to a 12V output voltage with a maximum current rating of 5A. This component is commonly used in power supply applications where reliable voltage conversion is required, such as in automotive systems, renewable energy setups, and industrial equipment.

• Powering 12V devices from a 24V power source
• Voltage regulation in automotive and marine systems
• Renewable energy systems (e.g., solar setups)
• Industrial control systems requiring stable 12V power

The following table outlines the key technical details of the Orin-TR 24 12-5 transformer:

The Orin-TR 24 12-5 transformer has a simple terminal block for input and output connections. The pin configuration is as follows:

1. Input Connection: Connect the 24V DC power source to the +24V IN and GND IN terminals. Ensure the input voltage does not exceed 24V to avoid damage.
2. Output Connection: Connect the load (e.g., a 12V device) to the +12V OUT and GND OUT terminals. Ensure the load does not draw more than 5A.
3. Polarity Check: Double-check the polarity of all connections to prevent reverse polarity issues.
4. Mounting: Secure the transformer in a well-ventilated area to prevent overheating. Avoid placing it near heat sources or in enclosed spaces without airflow.

• Overcurrent Protection: Use a fuse or circuit breaker rated for 5A on the output side to protect the transformer and connected devices.
• Heat Dissipation: Ensure adequate ventilation around the transformer to maintain optimal operating temperatures.
• Input Voltage Range: Do not exceed the specified 24V input voltage to avoid damaging the transformer.
• Wiring: Use appropriately rated wires for both input and output connections to handle the current safely.

The Orin-TR 24 12-5 can be used to power an Arduino UNO from a 24V power source. Below is an example circuit and code:

1. Connect the +12V OUT terminal of the transformer to the Arduino's VIN pin.
2. Connect the GND OUT terminal of the transformer to the Arduino's GND pin.

// Example code for Arduino UNO powered by Orin-TR 24 12-5 transformer
// This code blinks an LED connected to pin 13

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: Incorrect input connections or no input voltage.
   • Solution: Verify the input voltage is 24V and check the polarity of the connections.

2. Overheating:

   • Cause: Insufficient ventilation or excessive load current.
   • Solution: Ensure proper airflow around the transformer and reduce the load to within the 5A limit.

3. Output Voltage Drops Under Load:

   • Cause: Load exceeding the 5A current rating.
   • Solution: Reduce the load to within the specified current rating.

4. Transformer Not Powering On:

   • Cause: Blown fuse or incorrect wiring.
   • Solution: Check for a blown fuse and verify all connections.

Q1: Can the Orin-TR 24 12-5 be used with AC input?
A1: No, this transformer is designed for DC input only. Using AC input will damage the component.

Q2: What happens if the load exceeds 5A?
A2: The transformer may overheat, and the output voltage may drop. Prolonged overloading can damage the transformer.

Q3: Can I use this transformer in a solar power system?
A3: Yes, the Orin-TR 24 12-5 is suitable for use in solar power systems to step down voltage for 12V devices.

Q4: Is the transformer waterproof?
A4: No, the transformer is not waterproof. It should be installed in a dry, protected environment.

By following this documentation, users can effectively integrate the Orin-TR 24 12-5 transformer into their projects and troubleshoot common issues.