CO2 Laser Scanners Basic Manual – You Need to Know

CO2 Laser Scanners are a very important part of a laser engraving or cutting machine. CO2 Laser Scanners are designed as a dynamic magnetic structure and play a huge role in the work of the engraving machine. Let’s learn more about the role of the co2 galvo laser.

Features of CO2 Laser Scanners

CO2 laser scanner

The galvo co2 laser is designed as a dynamic magnetic structure. It combines the most advanced international photoelectric type sensing technology and the PDM control method. Numerous features of the laser galvo scanner include strong anti-interference capabilities, excellent positioning precision, and exceptional operating stability. Its extensive performance indicators match the highest technological standard of comparable goods both domestically and internationally.

These specific qualities are included:

  1. The laser mirror scanner has its own intellectual property rights and imports its photoelectric sensors from the US.
  2. The differential photoelectric sensor of the CO2 laser scanner precisely determines the location of the motor rotor. It has good linearity, small drift, high resolution, and repeatable positioning accuracy.
  3. The galvo head co2 laser is designed to load the 10 mm lens precisely. The best dynamic properties of the system are guaranteed by a laser galvo scanner with high accuracy, logical construction, low static friction coefficient, and zero offsets.
  4. To assure the best dynamic properties of the system, the CO2 laser scanner is built with high precision, appropriate construction, low static friction coefficient, and zero offset.
  5. Overload, overcurrent, and reverse connection protection are included in the galvo co2 laser’s architecture, which increases system dependability.
  6. The system is built with robust anti-interference capabilities, a high signal-to-noise ratio, and electromagnetic compatibility optimization.
  7. Solve the co2 galvo laser marking machine temperature drift, signal interference, zero drift, and other common problems.
  8. It is easily integrated into a variety of application systems despite weighing only 1 kilogram.

CO2 laser scanner performance specifications

Marking speed4000mm/s 
Positioning speed4000mm/s 
Writing speed301cps 
Step response time (1% of full travel)370us 
Step response time (10% of full travel)630us 
Tracking Error≤202us 

Accuracy and error

Repeat positioning accuracy<8μRad 
Gain error<5mRad 
Zero point offset (batch origin error)<5mRad 
Long drift (8 hours of continuous operation)<0.5mRad 
Scale Drift<40PPM/℃ 
Zero Drift<15μRad/℃ 
Lens damage thresholds  
K9 Substrate9.1J/cm^2 
Si Substrate10J/cm^2 
Lens reflective wavelength10600nm / 1064nm / 355nm 

Power & Signal

Input Voltage±15VDC 
Average operating current2A 
Signal InterfaceDigital  XY2-100
Peak current8A 
Position signal input resistance  10KΩ±1% 
Mechanical scanning angle±11° 

Operating current, temperature, size

Operating temperature0℃─45℃ 
Storage temperature-10℃─60℃ 
Laser input aperture  10mm 
CO2 laser scanner size (L×W×H)118.5×96.5x94mm 
CO2 laser scanner weight≈1Kg 

Note: The above parameters are tested after 30min of warm-up

  1. Using the F-Theta lens with a focal length of 160mm, marking 2mm high single-line characters.
  2. Use an F-Theta lens with a focal length of 160mm, marking 1mm high single-line characters per second.
  3. Can custom special wavelength coating.
  4. The standard mechanical scanning angle is ±11°, the maximum mechanical scanning angle is ±15°, and if there are special needs can be customized.

What is the working principle of a CO2 laser?

Shape of the CO2 laser scanner holder


Dimensional diagram of the CO2 laser scanner holder


Power supply wiring diagram


Digital mirror external wiring definition diagram


CO2 laser scanner common failures

Before powering on, check the whole system to see if there are false plugs, missing plugs, lenses touching each other, wrong drive signal, and power input.
Check if there are any false plugs, missing plugs, lenses touching each other, wrong drive signal and power input, etc., and turn on the power only after checking.

Failure phenomenonReasonSolutions
No response from the systemPower line is not working or the switch is not openCheck the power supply wiring
Red lights are always on, and noisy sound after startingLimit protection occursCheck whether the input signal amplitude is too large.
If the input signal is normal, then contact the manufacturer
Constant slight jittering of the scanning motor after start-upExcessive interference or input signal overhangCheck the interference source and input signal line.
There is noise in the motor after starting, and the driver board and motor are hotAre the driver board and motor wiring connected/clip or lens looseCheck the wiring/check the lenses and clips
The weak reflective power of the lensImproper light pathCheck the optical path of the marking machine. If normal, please get in touch with the manufacturer.
The marking map forms a straight line.The vibration mirror has an axis that does not swingCheck whether the contact between motor and drive board, marking board card, and drive board signal line are good
The marking line segment has wavesGrounding problems / strong interference sources around /
Marking control board anti-interference ability
Check whether the ground wire is connected/check whether there are strong interference sources around / check the marking control board output position control signal.
The marking square is diamond-shaped, or one side is not straightDA converter card signal output abnormalReplace the DA converter card. Don’t hesitate to contact the manufacturer if it does not work properly.

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