Optical Scale - Absolute - GVS908T
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- Order number: GVS908T
Absolute optical scale, available in a single piece or in modular version for large... more
Product information "Optical Scale - Absolute - GVS908T"
- Absolute optical scale, available in a single piece or in modular version for large machines (up to 30040 mm of measuring length or higher on request).
- Application in various industrial fields such as machine tools, vertical lathes, gantry machines, laser/plasma cutting machines, robotics, automation, etc.
- Stainless steel grating, integral with the machine guide, for an excellent accuracy at any temperature.
- SSI-BiSS C (unidirectional) serial interface. Direct reading of absolute measure.
- Resolutions up to 0.1 μm. Accuracy grade ± 5 μm.
- Rigidly bound modules, for a perfect seal against liquids and environmental dirty, unaltered over time.
- Adjustable cable output, through double connector.
- Wide alignment tolerances. Pressurization from both sides of the scale and/or of the transducer.
- 1 Vpp analog signal (optional).
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Technical data "Optical Scale - Absolute - GVS908T"
| Measuring Support | stainless steel grating |
| Grating pitch | 240 µm |
| Linear thermal expansion coefficient | 10.6 x 10-6 °C-1 |
| Incremental Signal | sine wave 1 Vpp (optional) |
| Resolution absolute measure | 1 µm - 0.1 µm * |
| Serial interface | SSI-BiSS C (unidirectional) |
| Resolution absolute measure | 1 µm - 0.1 µm |
| Accuracy grade | ± 5 µm ** |
| Measuring length ML in mm |
from 640 mm to 30040 mm, with steps of 200 mm modules length: 1200, 1400, 1600, 1800, 2000 mm |
| Max. traversing speed | 120 m/min |
| Max. acceleration | 30 m/s² |
| Required moving force | ≤ 15 N |
| Vibration resistance (EN 60068-2-6) | 100 m/s² [55 ÷ 2000 Hz] |
| Shock resistance (EN 60068-2-27) | 300 m/s² [11 ms] |
| Protection class (EN 60529) | IP53 standard IP64 on request |
| Operating temperature | 0 °C ÷ 50 °C |
| Storage temperature | -20 °C ÷ 70 °C |
| Relative humidity | 20% ÷ 80% (not condensed) |
| Reading block sliding | by ball bearings |
| Power supply | 5 VDC ± 5% |
| Current consumption | 280 mAMAX (with R = 120 Ohm) |
| Max. cable length |
50 m (serial + analog output) 70 m (serial output) *** |
| Electrical connections | see related table |
| Connector | on the transducer, with adjustable outputs |
| Electrical protections | inversion of polarity and short circuits |
| Weight | 1.7 kg + 3.5 kg/m (per m measuring length) |
* Depending on CNC division factor.
** The declared accuracy grade of ±X μm is referred to a measuring length of 1 m.
*** Longer cable lengths are available on request.
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