How to Use Emmerson r48-3000e3: Examples, Pinouts, and Specs

The Emmerson R48-3000E3 is a high-performance power supply designed for industrial applications. It provides reliable voltage regulation and efficient energy management, making it an ideal choice for powering critical systems in telecommunications, data centers, and industrial automation. With its robust design and advanced features, the R48-3000E3 ensures stable operation even in demanding environments.

• Telecommunications equipment
• Data center power systems
• Industrial automation and control systems
• Backup power solutions
• Renewable energy systems

The Emmerson R48-3000E3 is engineered to deliver consistent performance under a wide range of conditions. Below are its key technical details:

• Input Voltage Range: 85-300 VAC
• Output Voltage: 48 VDC (adjustable)
• Output Current: Up to 62.5 A
• Power Output: 3000 W
• Efficiency: Up to 96%
• Operating Temperature: -40°C to +75°C
• Cooling: Integrated fan cooling
• Form Factor: Compact 1U design
• Protection Features: Overvoltage, overcurrent, overtemperature, and short-circuit protection

The R48-3000E3 features a standard connector interface for input and output connections. Below is the pin configuration:

The Emmerson R48-3000E3 is straightforward to integrate into industrial systems. Follow the steps below to ensure proper usage:

1. Input Connection:

   • Connect the AC input terminals (L and N) to a suitable power source within the specified voltage range (85-300 VAC).
   • Ensure the PE terminal is connected to a reliable ground for safety.

2. Output Connection:

   • Connect the +V and -V terminals to the load, ensuring correct polarity.
   • Use appropriately rated cables to handle the maximum output current (62.5 A).

3. Adjusting Output Voltage:

   • Use the onboard potentiometer to fine-tune the output voltage within the adjustable range.

4. Cooling and Ventilation:

   • Ensure adequate airflow around the unit to maintain optimal cooling.
   • Avoid obstructing the fan or ventilation openings.

• Load Matching: Ensure the connected load does not exceed the maximum power output (3000 W).
• Environmental Conditions: Operate the unit within the specified temperature range (-40°C to +75°C).
• Safety Precautions: Always disconnect the power supply before making any wiring changes.
• Regular Maintenance: Periodically inspect the unit for dust accumulation and clean as needed to maintain efficient cooling.

While the R48-3000E3 is not typically used directly with microcontrollers like the Arduino UNO, it can serve as a reliable power source for circuits requiring 48 VDC. For example, you can use a DC-DC converter to step down the voltage to 5 V or 12 V for Arduino-based projects.

Here is an example of Arduino code to control a relay module powered by the R48-3000E3:

// Example: Controlling a relay module with Arduino UNO
// Ensure the relay module is powered by a DC-DC converter
// stepping down the R48-3000E3's 48V output to 5V.

const int relayPin = 7; // Pin connected to the relay module

void setup() {
  pinMode(relayPin, OUTPUT); // Set relay pin as output
  digitalWrite(relayPin, LOW); // Initialize relay to OFF state
}

void loop() {
  digitalWrite(relayPin, HIGH); // Turn relay ON
  delay(1000); // Wait for 1 second
  digitalWrite(relayPin, LOW); // Turn relay OFF
  delay(1000); // Wait for 1 second
}

1. No Output Voltage:

   • Cause: Input power is not connected or is outside the specified range.
   • Solution: Verify the AC input voltage and connections.

2. Overheating:

   • Cause: Insufficient ventilation or excessive load.
   • Solution: Ensure proper airflow and reduce the load if necessary.

3. Output Voltage Fluctuations:

   • Cause: Load instability or incorrect voltage adjustment.
   • Solution: Check the load for stability and adjust the output voltage using the potentiometer.

4. Fan Not Operating:

   • Cause: Fan failure or obstruction.
   • Solution: Inspect the fan for damage or blockages and replace if needed.

• Q: Can the R48-3000E3 be used in outdoor environments?
  A: Yes, it is designed to operate in a wide temperature range (-40°C to +75°C), but ensure it is protected from direct exposure to water or extreme weather.

• Q: How do I adjust the output voltage?
  A: Use the onboard potentiometer to fine-tune the output voltage. Refer to the user manual for detailed instructions.

• Q: What is the efficiency of the R48-3000E3?
  A: The power supply offers an efficiency of up to 96%, ensuring minimal energy loss.

• Q: Can I connect multiple units in parallel?
  A: Yes, the R48-3000E3 supports parallel operation for increased power output. Follow the manufacturer's guidelines for proper configuration.

This concludes the documentation for the Emmerson R48-3000E3. For further assistance, refer to the official user manual or contact the manufacturer.