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LIA 21

Incremental optical path encoder

Diverse mounting options, additional switching sensors, resolution as fine as 50 nm, and many other features

 

The LIA series combines precision and user-friendliness in one device. With its integrated EPIFLEX sensor module with double field scanning, it is also equipped for demanding applications.

  • with EPIFLEX sensor module and an additional integrated switching sensor
  • individually configurable
  • 1 Vpp or RS-422 output signal
  • up to 100-fold signal interpolation
  • smallest measuring step at 50 nm
  • travel speeds up to 10 m/s (at 1 Vpp)
  • reduced sensitivity to dirt due to double field scanning
  • flexible mounting due to different mounting possibilities
  • extensive accessories available
Precise positioning

High signal quality and stability due to novel sensor design and 3 separate scanning fields

Excellent signal quality

Implemented automatic online compensation ensures consistent, stable signal quality at all times

Outstanding longevity

The unique design and our exceptionally high quality standards in the production of our EPIFLEX sensor modules guarantee outstanding longevity

Technical data

Scanning head
Dimensions (Scanning head) 34 mm x 13.2 mm x 12.4 mm
Mass20 g
No. of scanning fields2 for incremental + 1 for index
Scanning frequencyMax. 500 kHz
Interfaces1 Vpp
TTL
Signal interpolation factorDown to 100
ResolutionDown to 50 nm
Supply Voltage5 V ±10%
Current consumption100 mA (1 Vpp)
230 mA (TTL)
Type of connector15-pin D-Sub
Cable lengths0.3 m
0.5 m
1 m
1.5 m
2 m
3 m
Cable diameter3.7 mm
5.1 mm
Operating temperature0 °C to +55 °C
Additional switch sensors1
Scale tape
Designation / typeMV
Grating period20 μm
Position index markin the middle
at 50 mm spacings
distance coded
customized
Max. measuring length26 m
MaterialStainless steel

Applications Linear

  • Production and inspection machines for the semiconductor industry
  • Linear units, drives and coordinate tables
  • Measuring machines and measuring microscopes
  • Positioning and measuring devices for medical technology
  • Precision devices for reprography
  • Precision machining
  • Robotics
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