1. Product Overview
The FAHKNS MYJG-50W-110V is a high-performance laser power supply designed for CO2 laser tubes, suitable for both engraving and cutting machines. It provides stable and efficient power output, enhancing the performance of your laser system.
Figure 1: Overview of the FAHKNS MYJG-50W-110V Laser Power Supply.
Key Features:
- Main Parameters: Rated voltage of 110V, maximum current of 22mA, compatible with 50-70W laser tubes.
- Feedback Interface: Allows for closed-loop control and monitoring of actual laser tube working current.
- Manual Test Switch: Facilitates quick determination of power supply functionality and on-site maintenance.
- Integrated Cooling Fan: Ensures rapid heat dissipation during operation.
- Simple Operation: Supports high or low-level control, 0-5V analog signal input, and PWM signal control for laser power adjustment.
- Safety Features: Includes open circuit protection to prevent damage from laser tube bursts, improving power supply life.
- Wide Applications: Suitable for various engraving and cutting tasks on materials such as fabric, two-color plates, rubber, wood, and bamboo.
Figure 2: Detailed views highlighting the input/output ports, internal cooling fan, and product identification label (PK77549).
2. Specifications
The following table outlines the technical specifications of the MYJG-50W-110V laser power supply:
| Parameter | Value |
|---|---|
| Brand | FAHKNS |
| Model Number | MYJG-50W-110V |
| Input Voltage | AC 110V / AC 220V |
| AC Frequency | 47-440Hz |
| Output Wattage | 50W |
| Max Output Voltage | 50KV |
| Max Output Current | 22mA (Rated), 38mA (Max) |
| Dimensions (LxWxH) | 20cm x 15cm x 9.3cm (7.87 x 5.91 x 3.66 inches) |
| Item Weight | 5.24 pounds (2.38 kg) |
| Efficiency | 91% |
| MTBF (Mean Time Between Failures) | ≥30000 hours |
| Response Speed | ≤1ms |
| Voltage Range (High-level) | ≥3V |
| Voltage Range (Low-level) | ≤0.8V |
| Operating Environment Temperature | -30°C to +65°C |
| Cooling Method | Forced air cooling (fan cooling) |
| High Temperature Test | Full Load/60°C/12 hours |
| Start/Stop Test | 500 times 7 seconds |
| Color | Black |
| Fan Count | 1 |
Figure 3: Product dimensions of the laser power supply.
3. Setup and Connection
Proper connection of the laser power supply is crucial for safe and effective operation. Refer to the diagram below for detailed wiring instructions.
Figure 4: Connection diagram illustrating input, output, and control terminals.
Wiring Instructions:
- Power Input (AC terminals): Connect the 110V/220V AC power source to the 'L' and 'N' terminals. Ensure proper grounding to the 'FG' (Frame Ground) terminal.
- High Voltage Output (LASER terminal): Connect the high voltage output to the anode of the CO2 laser tube.
- Control Side (H, L, P, G, IN, 5V, P terminals):
- H (Switch Laser Control - Active High): For laser control using an active high signal.
- L (Switch Laser Control - Active Low): For laser control using an active low signal.
- P (Water Protection): Connect to the water protection sensor.
- G (Signal Ground): Common ground for control signals.
- IN (Input Control Signal 0-5V): For analog control of laser power (0-5V).
- 5V (Output Power 5V): Provides a 5V output for external components.
- Test Button: The 'TEST' button allows for a quick manual test of the laser output. Use with caution and appropriate safety measures.
Figure 5: Diagram illustrating the connection of the power supply to a CO2 laser tube, including water cooling and current monitoring.
4. Operating Instructions
Once properly installed, the FAHKNS laser power supply offers flexible control options for your laser system.
Laser Power Control:
- Analog Signal Control: Connect a 0-5V analog signal to the 'IN' terminal to control the laser power output. A higher voltage corresponds to higher laser power.
- PWM Signal Control: The power supply also supports Pulse Width Modulation (PWM) signals for precise laser power control.
- High/Low Level Control: Utilize the 'H' or 'L' terminals for simple ON/OFF control of the laser, depending on your system's requirements.
Self-Test Function:
The integrated 'TEST' button allows for a quick self-test of the power supply's functionality. Pressing this button will momentarily activate the laser output. Ensure all safety precautions are observed when using this feature.
Figure 6: Location of the self-test button for quick diagnostics.
5. Maintenance and Care
To ensure the longevity and optimal performance of your FAHKNS laser power supply, adhere to the following maintenance guidelines:
- Cooling System: The power supply features an internal cooling fan. Regularly inspect the fan and ventilation grilles for dust accumulation. Clean as necessary to ensure unrestricted airflow and efficient cooling.
- Environmental Conditions: Operate the power supply within the specified temperature range (-30°C to +65°C) and avoid environments with excessive humidity or dust.
- Grounding: Always ensure the power supply is properly grounded to protect against electrical hazards and to maintain the integrity of the open circuit protection function.
- Open Circuit Protection: The power supply is designed with open circuit protection, allowing it to operate safely for a short period in an open circuit state (e.g., if the laser tube fails). However, prolonged operation in this state should be avoided.
Figure 7: Illustrations of the efficient fan design and robust thermal dissipation enclosure, crucial for product longevity.
6. Troubleshooting
This section provides guidance for common issues you might encounter with your laser power supply. For complex problems, contact professional technical support.
- No Laser Output:
- Verify all power connections (AC input, high voltage output to laser tube).
- Check if the laser tube is properly connected and not damaged.
- Ensure control signals (IN, H, L) are correctly applied and within the specified voltage range.
- Use the 'TEST' button to confirm if the power supply itself is generating output. If the test button works, the issue might be with the control signal or laser tube.
- Check the water protection circuit if applicable; a fault here can prevent laser firing.
- Unstable Laser Power:
- Ensure the input AC voltage is stable and within the acceptable range.
- Check for loose connections or damaged wiring.
- Verify the cooling fan is operating correctly and not obstructed, as overheating can affect stability.
- Power Supply Overheating:
- Ensure adequate ventilation around the power supply.
- Clean any dust or debris from the fan and ventilation grilles.
- Verify the ambient operating temperature is within the specified limits.
7. Product Applications
The FAHKNS MYJG-50W-110V laser power supply is versatile and can be used with CO2 laser engravers and cutters for a wide range of materials and applications, including but not limited to:
- Wood: Engraving intricate designs or cutting various wood thicknesses.
- Leather: Creating custom patterns, logos, or cutting leather for crafts.
- Metal: Marking or light engraving on certain coated metals (requires specific laser tube and setup).
- Glass: Etching designs onto glass surfaces.
- Plastic: Cutting and engraving various types of plastics, including acrylic.
- Jewelry: Engraving fine details on non-metallic jewelry or marking on certain metals.
- Fabric: Cutting and engraving textiles for fashion or craft projects.
- Two-color plates: Ideal for signage and name tags.
- Rubber plates: For stamp making.
- Bamboo briefs: For artistic and decorative purposes.
Figure 8: Examples of materials and applications for CO2 laser systems powered by this unit.
8. Warranty and Support
FAHKNS is committed to providing high-quality products and customer satisfaction. For warranty information, technical support, or service inquiries, please refer to the product packaging or contact FAHKNS customer service directly through their official channels. Keep your purchase receipt for warranty claims.