With ±30 nm cyclic error, patented filtering optics, resolution to 5 nm and simple installation, Renishaw's Signum RSLM encoder system provides all of the benefits of a 20 micron encoder with the performance of a fine pitch system.
The Signum range offers high speed, reliable, non-contact performance combined with advanced features including the In-Trac auto-phase optical reference mark and dynamic signal processing. The RSLM spar scale range addition offers performance to rival fine pitch glass scales at lengths far beyond their reach.
RSLM scale is available in defined lengths up to 5 m with an overall accuracy better than ±4 micron. Combined with the ultra-low ±30 nm sub-divisional error (SDE) of the Signum encoder, RSLM is perfect for long travel applications where metrology cannot be compromised.
The In-Trac optical reference mark provides a bi-directionally repeatable datum point across the entire speed and temperature range (over 12 m/s and up to 85°C) without increasing overall system width. RSLM is available with multiple In-Trac optical reference marks regularly spaced for customer selection or a single reference mark, either at the centre of the scale or close to the end of the scale. Dual optical limits provide easy-to-use end-of-travel indication.
