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Summary of Contents for Omtech USB3020N
- Page 1 V20230315 USB3020N Desktop Laser Engraver User Manual Read Carefully Before Use Keep for Future Reference...
- Page 2 PREFACE Thank you for choosing our laser equipment. Your CO laser engraving machine is intended for personal and professional use. When used in accordance with these instructions, it comprises a Class 1 laser system but some components remain EXTREMELY dangerous. Never disable the preinstalled safety devices and always use your laser safely and responsibly.
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Page 3: Table Of Contents
CONTENTS 1. Introduction ................................1 1.1 General Information ............................1 1.2 Symbol Guide ..............................2 1.3 Designated Use ..............................2 1.4 Technical Specifi cations ...........................3 1.5 Components ..............................4 2. Safety Information ..............................8 2.1 Disclaimer ................................8 2.2 General Safety ..............................8 2.3 Laser Safety ..............................9 2.4 Electrical Safety .............................10 2.5 Material Safety ...............................10 3. -
Page 4: Introduction
1. Introduction 1.1 General Information This manual is the designated user guide for installation, setup, safe operation, and maintenance of your desktop laser engraver. It is divided into six chapters covering general information, safety instructions, installation steps, operation instructions, maintenance procedures, and contact information. ALL personnel involved in the installation, setup, operation, maintenance, and repair of this machine should read and understand this manual, particularly its safety instructions. -
Page 5: Symbol Guide
1.2 Symbol Guide The following symbols are used on this machine’s labeling or in this manual: These items present a risk of serious property damage or personal injury. These items address similarly serious concerns with regard to the laser beam. These items address similarly serious concerns with regard to electrical components. -
Page 6: Technical Specifi Cations
1.4 Technical Specifi cations Model USB3020N Diameter 1.97 in. 50 mm Laser Tube Length 28.3 in. 720 mm Diameter 0.47 in. 12 mm Focus Lens Thickness 0.08 in. 2 mm Focal Length 2 in. 50.8 mm Diameter 0.79 in. 20 mm... -
Page 7: Components
1.5 Components... - Page 8 Main Parts A. Cover—The cover provides access to the main bay for placing and retrieving materials, as well as fi xing the laser path alignment and other maintenance. Power to the laser is automatically cut when the cover is opened. B.
- Page 9 Main Bay A. 2nd Mirror—This adjustable-angle mirror moves with the X-axis rail to allow the laser beam to travel along the Y axis. B. X-Axis Rail—The X-axis rail holds the 2nd mirror and supports the movement of the laser head left and right across the workbed.
- Page 10 Laser Head A. X-Axis Rail—This rail moves along the Y axis, with its movement controlled by limit switches. B. 3rd Mirror—This adjustable-angle mirror transfers the laser from the 2nd mirror to the focus lens. C. Focus Lens—This 12 mm lens directs and focuses the laser beam to its point of contact with the engraving material.
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Page 11: Safety Information
2. Safety Information 2.1 Disclaimer Your engraver may diff er somewhat from those shown in this manual due to options, updates, etc. Please contact us if your engraving machine came with an outdated manual or if you have any other questions. 2.2 General Safety Instructions •... -
Page 12: Laser Safety
2.3 Laser Safety Instructions When used as instructed, this machine comprises a Class 1 laser system safe for users and bystanders. However, the invisible engraving laser, the laser tube, and its electrical components remain EXTREMELY dangerous. Used or modifi ed without care, they can cause serious property damage and personal injury including but not limited to the following: •... -
Page 13: Electrical Safety
2.4 Electrical Safety Instructions • ONLY use this device with a compatible and stable power supply with less than 5% fl uctuation in its voltage. • DO NOT connect other devices to the same fuse, as the laser system will require its full amperage. Do not use standard extension cords or power strips. - Page 14 This machine can be safely used with the following materials: Plastics • Acrylonitrile Butadiene Styrene (ABS) • Nylon (Polyamide, PA, etc.) • Polyethylene (PE) • High-Density Polyethylene (HDPE, PEHD, etc.) • Biaxially-Oriented Polyethylene Terephthalate (BoPET, Mylar, Polyester, etc.) • Polyethylene Terephthalate Glycol (PETG, PET-G, etc.) •...
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Page 15: Installation
3. Installation 3.1 Installation Overview A complete working system consists of the laser engraving machine, its integrated air assist and exhaust system, a water tank (not included) with a pump (included), and a USB cable connected to a control computer with the enclosed engraving software. -
Page 16: Water Cooling System
3.4 Water Cooling Installation The provided water pump is essential to your engraver's performance and longevity. When this laser works without a properly maintained cooling system, its glass tube WILL explode from excess heat. NEVER touch or adjust your engraver's water supply while the pump is connected to power. To install your pump, fi... -
Page 17: Exhaust System
3.5 Exhaust System Installation Install the provided exhaust pipe onto the fan, as shown below. The pipe can be expanded to a full length of about 5 feet (1.5 m). The other end of the pipe should be connected to a dedicated purifi er or (if the fumes are not hazardous and meet local and national air safety standards) placed out a window. -
Page 18: Main Power
3.7 Main Power Connection Confi rm that the labeling beside the connection socket on the machine matches your power supply. Connect one end of the main cable to the connection socket and the other end to a grounded outlet. Under NO circumstances should you switch on the device if the voltages do not correspond. - Page 19 LaserGRBL Confi guration Open the LaserGRBL software on your computer. Select “Tools” from the toolbar at the top and then the “Install CH340 Driver” option. Once the driver is installed, choose the COM port and set the baud rate to 115200. Next, click “Connect”. After your engraver has successfully connected, click on “Grbl”...
- Page 20 Click “Write” to save the changes youʼve made and then close the menu. To enable the move menu, type the command $X into the GCode fi eld and press Enter. The software should now work with your engraver. Familiarize yourself with the software’s image design features and laser control settings before using it to operate your device.
- Page 21 LightBurn Confi guration After you have installed the CH341 driver, open your LightBurn software and select “Devices”. Click “Create Manually”. Select “GRBL” and click “Next”. Select “Serial/USB” and click “Next”.
- Page 22 Name the laser and set its X-axis length to 300mm and its Y-axis length to 200mm. Choose a corner to use as the machineʼs origin point and click “Next”. Choosing an origin diff erent from your design fi les may produce mirrored work or cause the laser to fi re off your material, producing dangerous refl...
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Page 23: Initial Testing
3.10 Initial Testing Emergency Shutoff Because of the risk of fi re and other hazards during engraving, this engraver includes a large and easy-to-reach emergency stop button on the control panel. Press it down to stop the laser tube instantly. When your engraver arrives, its e-stop should be pressed down and must be released to allow the laser to function. -
Page 24: Operation
4. Operation 4.1 Operation Overview Operate this laser marking machine only in accordance with all the instructions provided in this manual. Failure to follow the proper guidelines detailed here can result in property damage and personal injury. Before beginning to use the machine, make sure that you have read this entire manual (particularly the Safety Information above) and any and all warnings provided on the machine itself. - Page 25 Pull the holding clamp towards you, place your material between it and its frame, and release the clamp to hold your material in place at the correct height. Be aware that using the deeper bed and clamp limits your engraver’s processing area to 8 inches by 5 inches (200×125 mm).
- Page 26 Step 7. Prepare your designʼs location. In LaserGRBL, type “$X” into the GCode fi eld and press Enter to enable repositioning. The origin is shown as the center of the cross formed by the X and Y axes. Use the arrows to adjust the placement of your design to match your materialʼs location.
- Page 27 Step 8. Customize your design’s contrast and engraving depth by adjusting the speed, power, and other parameters in your engraving software. If you see the power setting in milliamperes, use the following conversion chart to fi nd the appropriate power setting: Power 80%+ Current 7 mA 8 mA 9 mA 10 mA 12 mA 13 mA 15 mA 17 mA 18 mA 20 mA 21 mA 22 mA 23 mA 24 mA...
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Page 28: Instructions For Specifi C Materials
During repetitive engraving and cutting, periodically check your temperature gauge to maintain a water temperature below 100°F (38°C). If this temperature is reached, stop work and allow your device to cool before further use. Step 11. When you have fi nished engraving, close your engraving software and then turn off your machine in the following order: the laser power supply (by removing your laser key from the control panel), the control system (by pushing down the emergency power button), any ventilation device, and—after providing some time for your tube to cool—the water cooling system. - Page 29 Paper and Cardboard When engraving various paper products, generally use low to moderate power and fast speed. Test samples from each batch as only small parameter diff erences can separate eff ects that are too light from those that burn through the substrate.
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Page 30: Maintenance
5. Maintenance 5.1 Maintenance Overview The use of procedures other than those specifi ed herein may result in hazardous laser radiation exposure. Before any cleaning or maintenance work, always switch off the device and disconnect it from its power supply. Always keep the system clean, as fl... - Page 31 Cleaning the Main Bay and Engraver Check at least once a day whether dust has accumulated in the main engraving bay. If so, it must be removed. The exact cleaning interval and requirements strongly depend on the material being processed and the operating time of the device.
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Page 32: Laser Path Alignment
5.3 Laser Path Alignment Having a proper beam alignment is important for the machine's overall effi ciency and the quality of its work. This machine went through a complete beam alignment before shipping. When the engraver fi rst arrives and about once a week during normal operation, however, it is recommended that users confi... - Page 33 5.3.1 Laser Tube Alignment To test the alignment of the laser tube with the 1st mirror, cut out a piece of tape and place it on the mirror's frame. DO NOT place the tape directly onto the mirror. Turn on the machine and set the power level to 11% or lower. Fire the laser.
- Page 34 5.3.2 1st Mirror Alignment After ensuring the laser is well aligned between the laser tube and 1st mirror, check the alignment between the 1st and 2nd mirrors. First, gently move the X axis rail along the Y axis to send the 2nd mirror to the back of the bed. Once set, place a piece of tape on the 2nd mirror's frame.
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Page 35: Parts Replacement
5.3.3 2nd Mirror Alignment After ensuring the laser is well aligned between the 1st and 2nd mirrors, check the alignment between the 2nd and 3rd mirrors. Gently move the X axis rail along the Y axis to send the 2nd mirror to the back of the bed. Gently move the laser head along the X axis to the far left. -
Page 36: Troubleshooting
QR code to the right. Come join the OMTech community at our offi cial laser group on Facebook or visit the company forums at omtechlaser.com! Check our YouTube channel for helpful hints and instructional videos.