NEJE N30820 Laser Module User Manual

1. Introduction

This manual provides essential information for the safe and effective use of your NEJE N30820 Laser Module. The NEJE N30820 is a professional laser module designed for cutting and engraving applications on various materials, featuring 450nm continuous blue light with TTL/PWM modulation for precise control in CNC machines. Please read all instructions carefully before operation.

A detailed user manual in PDF format is available here.

2. Safety & Warnings

IMPORTANT SAFETY INFORMATION: Failure to follow these instructions may result in damage to the product or personal injury.

2.1. Laser Class & Radiation

DANGER: VISIBLE LASER RADIATION. AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION.

This laser module is designed for engraving or cutting wood, fabric, leather, ceramics, stone, glass, metal, and other materials. It has an average power of < 5.5W, peak power of < 7.5W, pulse duration > 10 µs, and a wavelength (λ) of 440-455nm. Complies with DIN EN 60825-1: 2015-07.

2.2. General Safety Precautions

• Wear Goggles: Always wear appropriate laser goggles during usage to protect your eyes.
• Avoid Direct Exposure: Never touch the laser directly or expose your eyes or skin to direct or scattered laser radiation.
• Flammable Materials: Exercise extreme caution with flammable materials.
• Harmful Gases: Be aware that some materials (e.g., PVC) may emit harmful gases when processed. Understand the material characteristics before use and ensure adequate ventilation.
• Mirror Objects: Do not engrave mirror objects as they can reflect the laser beam, causing unpredictable hazards.
• Fire Hazard: Pay attention to fire risks during operation.
• Smoke Exhaust: Smoke will be generated when materials are burned; ensure proper smoke exhaust indoors.
• Children Safety: Children under 14 years of age are prohibited from using this product. Children over 14 years of age require adult supervision when using this product.
• Pets: Keep pets away from the working area.

3. Package Contents

The NEJE N30820 Laser Module kit typically includes the following components:

• NEJE N30820 Laser Module
• Adapter Board
• Power Adapter (UL certified DC Power)
• Laser Protection Glasses
• Connection Cables (PWM/TTL output signal, GND, 12V Power)
• Hex Wrenches
• Mounting Screws and Spacers
• Air Assist Tube (if included in kit)

Image: Overview of the NEJE N30820 Laser Module kit components.

Image: Laser protection glasses included in the kit.

Image: High quality UL certified DC Power adapter.

4. Setup Instructions

4.1. Initial Preparation

1. Unpack: Carefully remove all components from the packaging.
2. Protective Films: Before first use, remove any protective films from the device.

4.2. Module Installation

Mount the NEJE N30820 laser module onto your CNC machine using the provided screws and spacers. Ensure it is securely fastened and aligned correctly with your machine's mounting points.

Image: Diagram illustrating the installation of the laser module.

4.3. Wiring the Adapter Board

The adapter board is used to interface with the laser module. It features multiple input options for control signals.

Image: Detailed instructions and wiring diagram for the adapter board.

• Green Box: This is the output connection to the NEJE laser module.
• Red Box: This is the power and signal input (3-way). You only need to select one input.
• Yellow Box: This is the test button. Pressing it will turn the laser on at full power.

Connection Details:

• Connect the laser module to the corresponding interface on the adapter board.
• Connect the power adapter (DC 12V, 2A/3A/4A) to the adapter board.
• Connect your control board (e.g., GRBL or other CNC controller) to one of the 3-way inputs on the adapter board. The GND pin of your control board must be connected to the adapter board's GND pin.

Image: Wiring diagram for connecting TTL/PWM signals to the laser module.

If you do not need temperature sensing, you can use 3-pin control directly. A slight modification to the line might be needed:

• 3PIN: (12V-GND-TTL)
• OR 2PIN + 2PIN: (12V-GND + TTL-GND)
• TTL: 3.3V - 12V

5. Operating Instructions

5.1. Focus Adjustment

Set the appropriate focus and parameters according to the tutorial. For detailed operations, refer to neje.wiki.

Image: Diagram showing focus adjustment with air assist. Optimal focus is typically 32mm from the material surface, with air assist at 0.6-1.5 Mpa for plywood <8mm.

5.2. Test Function

The adapter board includes a test button (yellow box in the diagram) which, when pressed, activates the laser at full power. Use this feature cautiously and always wear protective eyewear.

5.3. Material Processing

The NEJE N30820 module is capable of marking, engraving, and cutting a wide range of materials. Refer to the tables below for typical performance on various materials.

Image: Cutting speed comparison for NEJE N30610 and N30820 laser modules on various materials. Note: Data requires air assist (0.6-1.5MPa) with laserGRBL or LightBurn.

Image: Table indicating suitability for marking, engraving, and cutting across a wide range of materials including plywood, leather, plastic, and various metals. Note: Effects on glass, transparent acrylic, stainless steel, and ceramics may require additional processes.

6. Maintenance

• Storage: After use, turn off the device and store it in a dry place, away from children.
• Cleaning: Keep the laser lens clean to ensure optimal performance.
• Temperature Control: The NEJE factory performs a 48-hour temperature control aging test to ensure module quality. Avoid operating the laser module for more than 30 minutes continuously without allowing it to cool down, as this can cause damage.

7. Troubleshooting

• Module Malfunction: If your laser module experiences any problems, DO NOT dismantle it without permission. Unauthorized disassembly will void the warranty and may further damage the module.
• Quality Issues: For any quality problems with the machine, please contact customer service. Many operational issues can be resolved with video and detailed problem descriptions.
• Compatibility: This laser module is compatible with NEJE machines. Ensure your setup is compatible if using with other brands.

8. Specifications

Image: Detailed specifications for the NEJE N30820 Laser Module.

Image: Dimensional drawing of the NEJE N30820 laser module, showing measurements in millimeters.

9. User Tips

• Always prioritize safety: Ensure you wear laser protection goggles during all operations.
• For optimal cutting and engraving results, ensure proper focus adjustment and consider using air assist, especially for thicker materials like plywood.
• When working with new materials, perform small test cuts or engravings to determine the ideal power and speed settings.
• Keep your workspace well-ventilated to manage smoke and fumes generated during laser processing.

10. Warranty & Support

10.1. Manufacturer Information

• Manufacturer: Shenzhen Zhi xinjie Technology Co., Ltd.
• Address: Building 1 Floor 5, ShanKeng Inner Ring Road No.6, ShanKeng Industry Park, ShanXia Village, PingHu Town, LongGang District, ShenZhen City.
• Service Website: neje.wiki

10.2. EU Authorized Representative

• Representative: Prolinx GmbH
• Address: Brehmstr.56, 40239 Duesseldorf Germany

10.3. Warranty Information

The NEJE factory provides a 48-hour temperature control aging test to ensure the quality of each module. The laser module comes with a 2-year (20,000 hours) free warranty. This warranty covers quality problems, excluding situations like damage caused by continuous use for more than 30 minutes per session.

10.4. Customer Support

If you encounter any quality problems or operational issues with your laser module, please contact customer service. Providing a video and a detailed description of the problem can help expedite the resolution process.