Absolute linear optical encoder with glass scale/ Measuring length: 70 mm up to 2040 mm /
for CNC machines / ± 5μm
GVS 508 / New Product

Compact absolute linear encoder with glass scale for CNC machines. High resolution up to 10 nm, robust against dirt, with SSI, BiSS, DRIVE-CLiQ or FANUC interface.

Absolute linear encoder for CNC machine tools
New GVS508 brochure: 📎brochure_GVS508_EN_MEGATRON

The absolute linear encoder with glass scale was specially developed for CNC machine tools and combines high precision, compact design and robustness.

Main features:
- Functional principle: Optical scanning with absolute glass grating, integrated in the housing of the measuring scale.
- Interfaces: SSI and BiSS C (unidirectional), with or without analog 1 Vpp signal, as well as Siemens DRIVE-CLiQ and FANUC αi.
- Resolution: Up to 10 nm for high-precision measurements.
- Accuracy: ±5 µm in the standard version; ±3 µm in the high-precision version (up to ±2 µm for measuring lengths ≤ 670 mm).
- Reliability: High resistance to dirt and industrial contamination.
- Fixed expansion point (FEP): Centrally arranged, optionally selectable on the right (RT) or left (LT) - to match the thermal expansion of the application.
- Thermal behavior: Linear expansion coefficient λ = 8 × 10-⁶ °C-¹.
- Metrological certificate is supplied with each dimensional scale.
- Connection: Integrated plug connector on the scanning head, with protection against reverse polarity and short circuits at the outputs.
- Easy to install: Compact design for installation in confined spaces.
- Pressurization possible on both sides of the measuring scale or directly on the scanning head.
GVS508 32.2X18: Absolute linear encoder for CNC machine tools, compatible with serial interface SSI - BiSS C (unidirectional), with or without 1 Vpp analog signal, Siemens DRIVE-CLiQ, FANUC αi and MITSUBISHI High Speed. (VI1000)

Measuring aid:

Glass scale

Type	Resolution	Accuracy grade	Max. traversing speed	Output signals	Protection class
GVS 508 T	1 - 0.1 - 0.05 - 0.01 μm	± 5 μm standard version ± 3 μm high-accuracy version (± 2 μm for ML up to 670 mm)	180 m/min	SSI - BiSS C INTERFACE	IP 54 standard IP 64 pressurized
GVS 508 D	0.1 - 0.01 μm	± 5 μm * standard version ± 3 μm * high-accuracy version (± 2 μm for ML up to 670 mm)	180 m/min	Siemens DRIVE-CLiQ	IP 54 standard IP 64 pressurized
GVS 508 F	1 - 0.1 - 0.05 - 0.01 μm	± 5 μm * standard version ± 3 μm * high-accuracy version (± 2 μm for ML up to 670 mm)	180 m/min	FANUC αi	IP 54 standard IP 64 pressurized
Brochure