Product category:
Rotary Position, Tilt and Angular Sensors
News Release from: Renishaw | Subject: SiGNUM RSLM encoder
Edited by the Engineeringtalk Editorial
Team on 11 October 2007
Encoders offer speed and precision
Renishaw's SiGNUM encoder range offers high-speed, reliable, noncontact performance combined with the IN-TRAC auto-phase optical reference mark and dynamic signal processing.
Renishaw's SiGNUM RSLM encoder system provides all of the benefits of a 20um encoder with the performance of a fine pitch system, with +/-30nm cyclic error, filtering optics, resolution to 5nm and simple installation Renishaw's SiGNUM range offers high-speed, reliable, noncontact performance combined with the IN-TRAC auto-phase optical reference mark and dynamic signal processing
This article was originally published on Engineeringtalk on 9 Mar 2001 at 8.00am (UK)
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Significant new developments to Renishaw's open, non-contact, encoder system include a 360° degree high resolution rotary encoder.
The RSLM spar scale is a new addition to the range, which offers performance to rival fine pitch glass scales at lengths far beyond their reach.
The RSLM scale is available in defined lengths up to 5m with an overall accuracy better than +/-4um.
Combined with the +/-30nm sub-divisional error (SDE) of the SiGNUM encoder, RSLM is suitable 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 12m/s and up to 85C) 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.
Manufactured from a hard martensitic stainless steel, RSLM offers a low coefficient of thermal expansion (10.8um/m/C), yet its composition provides a high resistance to corrosion.
SiGNUM RSLM is as easy to use as tape scale, yet is as accurate as a fine pitch glass scale.
The robust scale offers a much smaller cross section than typical glass scales, allowing easier handling and installation without risk of breakage.
In addition, RSLM can be coiled for simple storage and handling yet behaves as a spar scale once uncoiled.
System designers can choose between clip and clamp mounting, or adhesive tape with an epoxy anchor point.
The SR readhead features Renishaw's filtering optics to provide excellent immunity to dirt, dust and scratches.
Like all SiGNUM encoders, the RSLM encoder system benefits from SiGNUM intelligent signal processing, which ensures excellent reliability and low sub-divisional error.
In addition, SiGNUM software enables optimum set-up and real-time system diagnostics via a PC's USB port. Request a free brochure from Renishaw ...
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