Greluma 12V 5A 60W AC-DC Switching Power Supply User Manual

1. Introduction

This manual provides detailed instructions for the safe and efficient use of your Greluma 12V 5A 60W AC-DC Switching Power Supply. This robust unit converts AC 110V/220V input to a stable DC 12V 5A output, suitable for a wide range of applications. Please read this manual thoroughly before installation and operation.

2. Safety Information

WARNING: HIGH VOLTAGE. Do not remove the cover. This unit should only be serviced by qualified personnel.

• This power supply is designed for indoor use only.
• Ensure proper ventilation to prevent overheating.
• Do not expose the unit to water, moisture, or high humidity.
• Avoid operating the unit above its rated current for extended periods to ensure long service life.
• Always disconnect power before making any connections or adjustments.
• The unit features built-in protection against short-circuit, overload, and overvoltage. However, proper installation and usage are crucial.

Image 1: Front view of the Greluma 12V 5A 60W AC-DC Switching Power Supply, showing the metal casing and terminal block.

3. Product Features

The Greluma 12V 5A 60W Power Supply is engineered for reliability and efficiency, incorporating several key features:

• Universal AC Input: Accepts AC 110V/220V ±15% input, automatically selected.
• Stable DC Output: Provides a regulated DC 12V 5A output.
• High Efficiency: Operates with high efficiency (typically 70-90%) compared to linear power supplies, reducing energy consumption.
• Compact Design: Housed in a durable metal case.
• Comprehensive Protection:
  • Short-circuit Protection
  • Boot Protection
  • Leakage Protection
  • Overheat Protection
  • Overvoltage Protection
  • Overload Protection
  • Over-Current Protection
• Adjustable Output: Output voltage can be fine-tuned by approximately 10% using an integrated potentiometer.

Image 2: Diagram illustrating the seven protection functions integrated into the power supply for enhanced safety and device longevity.

4. Specifications

Image 3: Detailed dimensions of the Greluma 12V 5A 60W power supply.

5. Setup and Installation

Follow these steps for proper installation of your power supply:

1. Mounting: Securely mount the power supply in a well-ventilated area, away from direct heat sources or moisture. Ensure adequate airflow for free air convection cooling.
2. Input Voltage Selection: The unit automatically detects and adjusts for AC 110V or 220V input. No manual switch is required.
   

   Image 4: Internal components of the power supply, highlighting the automatic 110V/220V input voltage selection feature.

3. Wiring Connections: Refer to the diagram below for correct wiring.
   • AC Input (L, N, Ground): Connect the Live wire to 'L', Neutral wire to 'N', and Ground wire to the ground terminal.
   • DC Output (+V, -V): Connect your load's positive terminal to '+V' and negative terminal to '-V'.
   

   Image 5: Detailed wiring diagram showing connections for Live (L), Neutral (N), Ground, DC Output Negative (-V), and DC Output Positive (+V). Also indicates the output voltage adjustment potentiometer.

4. Output Voltage Adjustment: A small potentiometer (labeled 'ADJ' or similar) is provided near the output terminals. You can adjust the DC output voltage by approximately ±10% using a small screwdriver. Make adjustments only when the unit is powered off and ensure the output voltage matches your device's requirements before connecting.
5. Final Check: Before applying power, double-check all connections to ensure they are secure and correctly wired.

6. Operating Instructions

Once properly installed and wired, the Greluma power supply is ready for operation.

• Power On: Connect the AC input cable to a suitable power source. The power supply will automatically convert the AC input to a stable DC 12V output.
• Applications: This power supply is suitable for various 12V DC applications, including:
  • Industrial Automation
  • 3D Printers
  • DIY Electronic Projects
  • LED Displays
  • LED Strip Lights
  • 12V Security Systems
  • Medical Power Supply applications
  • Solar Photovoltaic Power Supply systems
  • Electrical Equipment Power Supply
• Load Management: Ensure the total current draw of your connected devices does not exceed the power supply's rated output of 5A (60W). Overloading can trigger protection mechanisms or reduce the lifespan of the unit.

Image 6: Examples of common applications for the Greluma 12V 5A 60W power supply, including LED lighting, industrial, medical, and security systems.

7. Maintenance

The Greluma power supply is designed for minimal maintenance.

• Cleaning: Periodically clean the exterior of the unit with a dry, soft cloth. Do not use liquid cleaners or solvents. Ensure ventilation holes are free from dust and debris.
• Ventilation: Regularly check that the installation area allows for adequate air circulation to prevent heat buildup.
• Load Monitoring: Avoid consistently running the power supply at its maximum rated capacity for prolonged periods. This practice helps extend the unit's operational life.
• Inspection: Occasionally inspect the input and output wiring for any signs of wear, damage, or loose connections.

8. Troubleshooting

If you encounter issues with your power supply, consider the following troubleshooting steps:

• No Output Power:
  • Check if the AC input cable is securely connected to both the power supply and the wall outlet.
  • Verify that the wall outlet has power.
  • Ensure the input voltage is within the specified range (110V/220V).
  • Check for any tripped circuit breakers or blown fuses in your electrical system.
• Intermittent Power:
  • Inspect all wiring connections for looseness or damage.
  • Ensure the load connected does not exceed the power supply's rated current (5A). Overload protection may be activating.
  • Check for proper ventilation; overheating can cause intermittent operation.
• Incorrect Output Voltage:
  • Use a multimeter to measure the output voltage.
  • Adjust the output voltage potentiometer (ADJ) if necessary, ensuring it is within the acceptable range for your application.
• Unit is Hot:
  • Ensure the unit has adequate ventilation and is not enclosed in a confined space.
  • Verify that the ambient temperature is within the operating range (-20°C to +60°C).
  • Confirm that the load is not exceeding the rated output current.

If these steps do not resolve the issue, please contact customer support.

9. Warranty and Support

For information regarding warranty coverage or technical support, please refer to the purchase documentation or contact the seller directly. Keep your proof of purchase for any warranty claims.

Manufacturer: Greluma
Model: ZL658LUM