Super-accurate linear encoder keeps a low profile

July 11, 2001
An exposed incremental linear encoder from Heidenhain Corp., Schaumburg, Ill., combines a photolithographically produced grating on its scale tape with newly designed scanning optics to guarantee high accuracy.

An exposed incremental linear encoder from Heidenhain Corp., Schaumburg, Ill., combines a photolithographically produced grating on its scale tape with newly designed scanning optics to guarantee high accuracy. The scanning head on the LIDA 400 has overall height of only 12 mm (0.47 in.) and can mount in tight spaces. Beam path and photodetector configuration is such that the scanning surface is a relatively large 14.5 mm2 despite the small scanning head, making the encoder relatively tolerant to contamination.

Grating period is 20 microns. Available interfaces are the widely used 1 VPP and TTL formats. LIDA 400s can be specced to measure lengths up to 30 m and hit traversing speeds of up to 480 m/min (18,900 ipm). The encoders are available with reference marks and now also feature integrated, magnetic limit switches.

Sponsored Recommendations

June 27, 2025
Ensure workplace safety and compliance with our comprehensive Lockout/Tagout (LOTO) Safety Training course. Learn critical procedures to prevent serious injuries.
June 27, 2025
Join our expert webinar to discover essential safety control measures and best practices for engineering a truly safe and compliant industrial environment.
June 25, 2025
An innovative aircraft with electric drives combines the best of both worlds. The cross between drone and helicopter could mean significantly faster and more efficient air emergency...
June 25, 2025
Effective when other materials fail, ceramics are particularly suitable for applications requiring wear and chemical resistance, sliding characteristics or biocompatibility. Discover...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!