EVOLUTE™ absolute optical readhead with BiSS ® serial communications EL-32B-RB-050F-30-A
EVOLUTE™ is a true-absolute 50 μm scale period optical encoder with wide installation tolerances and high immunity to dirt. Using a scale period of 50 μm gives the EVOLUTE encoder system a generous 500 μm rideheight tolerance and its single-track optics are optimized for contamination resistance. Data redundancy encoded into the robust scale minimizes the risk of positional error while sophisticated error checking mechanisms ensure an error flag is always asserted when the position cannot be determined. The EVOLUTE system provides absolute position with resolution options down to 50 nm. Advanced optical design and high-speed signal processing mean sub‑divisional error (SDE) is as low as ±150 nm with noise (jitter) below 10 nm RMS. EVOLUTE encoders are mechanically identical to RESOLUTE encoders and are supplied with the RTLA50 scale that can be used, either in its self‑adhesive form, RTLA50-S, or in the FASTRACK ™ scale carrier system

Features:

• True absolute non-contact optical encoder system: no batteries required • Wide set-up tolerances for quick and easy installation • Integral set-up LED enables easy installation and provides diagnostics at a glance • Enhanced immunity to dirt, scratches and light oils • Resolution options of 50 nm, 100 nm and 500 nm • 100 m/s maximum speed for all resolutions • ±150 nm sub-divisional error for smooth velocity control • Less than 10 nm RMS jitter for improved positional stability • Built-in separate position-checking algorithm provides inherent safety • Readhead is reversible for flexible mounting. Scale orientation defines count direction only • Scale lengths up to 10.02 m • Operates up to 80 °C • Integral over-temperature alarm Compatible with: • RTLA50-S self-adhesive tape scale • RTLA50 with FASTRACK carrier • Optional Advanced Diagnostic Tool ADTa-100