Catalogs >
RENISHAW >
RTLA50 absolute linear encoder scale system for EVOLUTE™

RTLA50 absolute linear encoder scale system for EVOLUTE™
1 / 6Pages

Catalog excerpts

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 1

RTLA50 absolute linear encoder scale system for EVOLUTE™ The range of RTLA50 absolute linear encoder scales from Renishaw give ±10 µm/m accuracy in the form of a rugged and easy-to-handle stainless-steel tape. RTLA50 scales can either be stuck to the substrate using their self‑adhesive backing or mounted in the revolutionary FASTRACK ™ track system to offer total design flexibility. When combined with Renishaw’s EVOLUTE readhead, the RTLA50 scales offer high accuracy and an independent expansion coefficient with resolutions down to 50 nm. The generous rideheight and installation tolerances, impressive dirt immunity and ease of assembly make this encoder ideally suited to a wide variety of applications. RTLA50 can be used with FASTRACK carrier, Renishaw’s cut-to-length track based mounting system, making it ideal for large machines that need to be sectioned for transportation. In this case the scale is held securely in place by two low-profile yet rugged guide rails and restrained at a single point to allow independent expansion with extremely low hysteresis, even over wide temperature ranges. If damaged, the scale can be slid out of the guide rails and quickly replaced, even where access is limited, thus reducing machine downtime. When FASTRACK carrier is not used, an adhesive-backed version, RTLA50-S, can be laid directly onto the substrate using a patented application tool in a quick, simple and inexpensive process. Metrology is ensured by using the supplied clamp at a single point to lock the scale to the substrate. RTLA50-S and RTLA50 with FASTRACK carrier are suitable for any application where thermal expansion of the scale must be independent of the machine structure, including FPD manufacturing and inspection machines, PV manufacturing, linear motors with aluminium substrates, large CMMs, axes that are exposed to potential damage, and any other machines that require the scale to be installed/removed for transit. • Flexible and easy-to-handle scale for use with EVOLUTE absolute readhead • Stainless‑steel tape scale accurate to ±10 µm/m. Further improvement possible with error compensation • Independent RTLA50 scale expands at its own thermal coefficient (10.1 ±0.2 µm/m/°C @ 20 °C) • Repeatable metrology: scale can be locked to the substrate at a single datum point anywhere along the axis • High solvent immunity • Scale lengths up to 10.02 m • Quick installation. Use FASTRACK carrier for easy scale replacement • FASTRACK carrier: sectional form is ideal for large machines and subassemblies • FASTRACK guide rails are pre

Open the catalog to page 1

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 2

Data sheet RTLA50 absolute linear encoder scale system for EVOLUTE System features RTLA50 and RTLA50-S scale Error plot X ±10 µm/m accuracy at 20 °C, including slope and linearity. Further improvement possible with error correction X Hardened stainless steel construction is rugged and reliable, with high scratch and solvent resistance X Independent expansion coefficient (10.1 ±0.2 µm/m/°C @ 20 °C) X Very low hysteresis: sub-micron on a centre clamped 2 m axis over the entire operating temperature range X Track mounted using the revolutionary FASTRACK or self-adhesive mounted (RTLA50-S)...

Open the catalog to page 2

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 3

Optical centreline Do not cut FASTRACK over shaded area NOTE: Minimum recommended FASTRACK length = 100 mm. All dimensions applicable when using EVOLUTE side cable outlet version. *Assumes 1 mm gap between scale and end covers and zero gap between FASTRACK and end covers. † Only required for sectional installations. ‡ For thermal expansion. EVOLUTE readhead Spot of Loctite® 435™ (2 positions) to secure axis datum position Optional end cover (Pair A-9589-0058) Data sheet RTLA50 absolute linear encoder scale system for EVOLUTE Installation drawing: RTLA50 in FASTRACK carrier For further...

Open the catalog to page 3

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 4

Datum clamp End cover alignment indicator Optical centreline Readhead optical detector position at extent of travel EVOLUTE readhead Optional end cover (Pair A-9585-0035) NOTE: All dimensions applicable when using EVOLUTE side cable outlet version. Data sheet RTLA50 absolute linear encoder scale system for EVOLUTE (with adhesive datum clamp) For further details, refer to EVOLUTE RTLA50-S installation guide (M-6183-9046) Dimensions and tolerances in m

Open the catalog to page 4

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 5

RENISHAW. apply innovation™ Data sheet RTLA50 absolute linear encoder scale system for EVOLUTE Resolution and scale lengths EVOLUTE is available with a variety of resolutions and scale lengths to meet the needs of a wide range of applications. The choice of resolution depends on the serial protocol being used. Refer to the relevant EVOLUTE data sheet for more information. For further information on installation and mounting options, refer to the EVOLUTE linear installation guides (M-6183-9046 or M-6183-9040), which are available from your local Renishaw representative or can be downloaded...

Open the catalog to page 5

RTLA50 absolute linear encoder scale system for EVOLUTE™ - 6

Renishaw pic New Mills, Wotton-under-Edge, Gloucestershire, GL12 8JR United Kingdom Part type RTLA50-S RTLA50 FASTRACK Part number (where xxxx is the length in cm) A-6186-xxxx A-6185-xxxx A-9704-xxxx *NOTE: Part numbers for FASTRACK lengths ending in 25 mm are: Part numbers for FASTRACK lengths ending in 75 mm are: Datum clamp Adhesive datum clamp (RTLA50-S only) Adhesive for clamp (Loctite 435) 20 g 18 gauge dispensing tip Bolted datum clamp (FASTRACK only) Setting shim FASTRACK with RTLA50 0.6 mm setting shim (red) M-9589-0090 RTLA50-S 0.8 mm setting shim (blue) M-9517-0122 Separator kit...

Open the catalog to page 6