| Name: | Linear Scales Cnc | Keyword: | Absolute Incremental Encoder |
|---|---|---|---|
| Meas. Standard: | 0.02 Mm | Meas. Length: | 50-1250 Mm |
| Display Resolution: | 5 µm | Structure: | Vertical 5 Bearings Support |
| Applications: | High Accuracy Milling, Grinder Machine | Output Signal: | TTL |
Advanced Optical Measuring System
Principal of Absolute Linear Scale
The absolute linear scale is comprised of two distinct grating masks: the Absolute Grating Mask and the Incremental Grating Mask. Each mask serves a unique purpose: The Absolute Grating Mask features varied patterns across the entirety of the grating glass, providing low-resolution yet distinct position readings throughout the entire range of measurement.
The Incremental Grating Mask consists of repetitive, identical patterns across the entire grating glass. This configuration produces stable and high-quality electronic signals for signal interpolation, enabling extremely precise and high-resolution position measurements.
Absolute Coding
All absolute coding used in our Absolute Grating Mask are designed by Easson, it is 100% our in-house design and intellectual property, designed and developed for different requirements of applications.
Burn-in Test
The reader head of the Optical Linear Scale must undergo a 72 hours aging test before assembly to ensure the reliability and quality of all linear scales.
| VA10 | VA11 | VA12 | VA13 | VA20 | VA21 | VA22 | VA23 | ||
| Measuring Standard | Glass Scale - Grating period: 20μm (0.02mm) | ||||||||
| Optical Detecting System | Transmissive Infrared System: wave length 880mm | ||||||||
| Slide Carrier System | Vertical five bearings supporting system | ||||||||
| Resolution | 5μm | 1μm | 5μm | 1μm | 5μm | 1μm | 5μm | 1μm | |
| Measurement Travel | 50-1200mm | Every 50mm per length Specification | Not available | ||||||
| 1300-3000mm | Not available | Every 100mm per length Specification | |||||||
| Accuracy | 50-450mm | ±3μm - ±5μm | -- | ||||||
| 500-800mm | ±10μm | ±5μm | ±10μm | ±5μm | -- | ||||
| 1050-2000mm | ±10μm | ±5μm | ±10μm | ±5μm | -- | ||||
| 1300-3000mm | -- | ±10μm/m | |||||||
| Repeatability | 2μm (0.002mm) | ||||||||
| Hystersis | 3μm (0.003mm) | ||||||||
| Protection | IP 53 | ||||||||
| Power supply | DC 5V ± 5% | ||||||||
| Output Signal | TTL | TTL | 422 | 422 | TTL | TTL | 422 | 422 | |
Installation Diagram
VA10 / VA11 / VA12 / VA13 Series
Connector interface
Absolute linear scale output signal
AS series absolute linear scales offering wide variety choices of output signal interface for different cost, resolution, speed and reliability considerations. Customers can order the most suitable type of output signal interface which optimized to the best of their application and cost requirement.
100% Laser calibration
All glass scale are individually inspected and calibrated by our in-house laser interferometer to ensure measuring accuracy comply 100% with the specifications.
