ST-Galvo Scanner
ST-Galvo Scanner
The ST-Galvo Scanner is a compact two-axis galvanometer scan set built on dynamic magnetic drive technology with high-resolution, high-precision position sensors. It drives the mirror to reflect and position the laser beam in laser processing and beam scanning systems, and is engineered for fast response, long-term stability and high repeatability in demanding environments. The galvo motor is specially optimised for mechanical accuracy and a high torque constant, and the encoder structure achieves linearity better than 99.6 % at ±20° deflection.
Key Features:
- The ST Galvo Scanner delivers superior performance with its compact structure and 18-bit high-resolution encoder, ensuring ultra-high repeatability accuracy and precision control in laser processing applications.
- Featuring a specially optimized galvo motor, the system offers exceptional mechanical accuracy and a high torque constant, ideal for demanding environments where speed and accuracy are critical.
- With its optimized encoder structure, the system achieves linearity greater than 99.6% at ±20° deflection angle, ensuring reliable signal feedback for dynamic scanning.
- Engineered for fast response and long-term stability, this galvanometer scanner is an ideal solution for high-speed laser applications such as marking, engraving, cutting, and welding.
- The ST galvo system supports rich optical configurations, compatible with lens apertures from 3 mm to 100 mm, making it highly adaptable across various industries.
Specifications of ST-Galvo Scanner
| ST Galvo Scanner | 201 | 200 | 210 | 215 | 218 | 220 | 231 | 230 | 240 | 250 | 260 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Input Beam Aperture (mm) | ≤7 | ≤7 | ≤7 | ≤7 | ≤7 | 7 – 10 | 10 – 14 | 14 | 20 – 30 | 50 – 80 | 50 – 120 |
| Moment of Inertia (g·cm²) | 0.01 | 0.013 | 0.018 | 0.028 | 0.024 | 0.126 | 0.67 | 0.78 | 2.073 | 14.3 | 40.47 |
| Torque Constant (N·mm/A) | 0.9 | 1.2 | 2.7 | 3.6 | 3.0 | 6.0 | 11.1 | 13.1 | 20 | 70.8 | 86 |
| Coil Resistance (Ω) | 2.0 | 2.1 | 3.6 | 2.1 | 2.7 | 2.8 | 1.27 | 1.12 | 1.1 | 1.3 | 1.2 |
| Coil Inductance (µH) | 25 | 35 | 70 | 70 | 120 | 180 | 171 | 150 | 240 | 600 | 580 |
| Maximum Continuous Current (A) | 1.2 | 1.2 | 1.5 | 3.5 | 2.5 | 3.5 | 3.5 | 3.5 | 4 | 7 | 10 |
| Peak Current (A) | 6 | 6 | 8 | 15 | 10 | 15 | 10 | 10 | 12 | 15 | 18 |
| 1 % Angle Response Time (ms) | 0.2 | 0.1 | 0.13 | 0.13 | 0.15 | 0.15 | 0.25 | 0.25 | 0.35 | 0.8 | 1.0 |
| Weight (g) | 12 | 13 | 18 | 25 | 50 | 50 | 200 | 230 | 320 | 420 | 1040 |
Models 201 to 260; aperture, inertia, torque, resistance, inductance, current, response time and weight per model.
| Sensor Parameters | |
|---|---|
| Max. Scanning Angle (°) ① | ±20 |
| Nonlinearity (%) | < 0.4 |
| Repeatability (µrad) | < 2 |
| Offset Drift (µrad/K) | < 15 |
| Gain Drift (ppm/K) | < 40 |
| Position Resolution | 18 Bit ② |
| Output Signal, Common Mode | 130 µA with AGC current of 40 mA |
| Output Signal, Differential Mode | 11.5 µA/° with AGC current of 40 mA |
Notes: ① All angles above are mechanical angles. ② After calculation, 18 bit at 25 °C corresponds to 1.7 µrad, and 23 bit at 360° corresponds to 0.75 µrad.
Data Sheet: ST-Galvo Scanner (PDF)
Eleven models from 3 mm to 100 mm aperture. Tell us your laser type and application and we will quote the right scanner.
