The ALS20000 was designed to have exceptional velocity
control, low vibration, high accuracy, and excellent throughput,
making it the ideal solution for imaging and precision inspection
applications.
High Performance in a Compact Package
ALS20000 series stages incorporate the highest quality materials
and design elements. The result is a high-reliability linear stage
with excellent accuracy, straightness and flatness performance,
and a virtually unlimited, trouble-free service life.
Recognizing the importance of stage stiffness, the ALS20000 linear
bearings are supported by the maximum cross-section possible while
still maintaining an overall low profile. Outstanding system straightness
and flatness are obtained particularly in XY configurations.
Linear Motor Drive
Unlike other linear motor stage designs that utilize an iron-core
flat motor design, the ALS20000 is driven by a high-power ironless
forcer and U-channel magnet track. This design is superior in
high-performance applications. Since the BLM is ironless, it is
a cog-free design. The lack of cogging enables extremely tight
velocity control as well as superior contour motion profiles without
sacrificing speed or acceleration. The magnetic field of the BLM
motor is totally self-contained within the U-channel design. Most
high-performance applications cannot tolerate the stray magnetic
fields generated by flat motor magnet tracks.
The BLM’s magnet track is composed of opposing rows of high-power
magnets that help to generate high output forces. This approach
eliminates the need for an iron-based core, which has an inherent
magnetic attraction between the forcer and the magnet track. This
attractive force presents an additional load to the bearings that
reduces stage life and performance.
Cable Management System
Extensive R&D has resulted in an optimized cable management
system (CMS) that is designed for millions of cycles of maintenance-free
operation. Designed to provide a turnkey system for both single-
and multi-axis systems, upper-axis cabling is incorporated into
the overall system CMS. To facilitate integration into the final
system, a spare 25-pin D-connector and cabling are included for
customer use. Custom configurations are common and are readily
available.
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