Motion controllers provide sub-nanometer resolution

DECEMBER 3, 2008--SPiiPlus and MC4U multi-axis motion controllers feature a Sin-Cos encoder multiplier that features 1-Vptp differential inputs that use a maximum theoretical Sin-Cos encoder multiplication factor of 65,536 to achieve required high resolution.

Dec 3rd, 2008

DECEMBER 3, 2008--SPiiPlus and MC4U multi-axis motion controllers feature a Sin-Cos encoder multiplier that features 1-Vptp differential inputs that use a maximum theoretical Sin-Cos encoder multiplication factor of 65,536 to achieve required high resolution. With input frequencies rated up to 2.5 MHz, the achievable maximum velocity is not dependent on the selected multiplication factor, enabling the use of ultrahigh-resolution laser feedback devices.
ACS
Plymouth, MN, USA
www.acsmotioncontrol.com

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PRESS RELEASE

FOR IMMEDIATE RELEASE, ACS082

August 4, 2008

Powerful Sin-Cos encoder multiplier enables high accuracy positioning with low jitter...

ACS MOTION CONTROLLERS PROVIDE SUB-NANOMETER RESOLUTION
PLYMOUTH, MN (August 4, 2008) -- Providing sub-nanometer position resolution without compromising speed or throughput, ACS Motion Control's advanced SPiiPlus and MC4U multi-axis motion controllers feature a powerful Sin-Cos encoder multiplier that enables accurate, high-resolution positioning while reducing jitter and settling times.

The SPiiPlus Sin-Cos encoder multiplier features 1Vptp differential inputs that use a maximum theoretical Sin-Cos encoder multiplication factor of 65,536 to achieve
the required high resolution of today's demanding motion applications. With input frequencies rated up to 2.5MHz, the achievable maximum velocity is not dependant on the selected multiplication factor enabling the use of ultra high-resolution laser feedback devices.

"When high-speed and nanometer axis position resolutions are required, OEMs have been limited to expensive laser interferometer feedback systems. With our internal SPiiPlus Sin-Cos encoder multiplier, users now have a much less expensive alternative by using an analog Sin-Cos encoder solution," said Evan Reed, ACS Vice President.

The SPiiPlus PCI and linear drives were tested on a high performance XY table used for wafer inspection with Sin-Cos encoder resolutions of 4nm (250 lines per mm). Using a multiplication factor of 8,192, ACS engineers measured a jitter of +/-2 encoder counts, which is equivalent to ~1nm. At this high resolution, the axis achieved velocities up to one meter per second.

For more information about ACS motion controllers, contact ACS at 14700 28th Ave North - Suite 25, Plymouth, MN 55447; call 800-545-2980; e-mail
evanr@acsmotioncontrol.com; or go to www.acsmotioncontrol.com.

About ACS
An international manufacturer of advanced multi-axis motion controllers, machine controllers and integrated control modules, ACS (NASDAQ: ACSEF) provides standard and custom products that combine power and precision to deliver flexible, economical, user-friendly motion and machine control solutions. Established in 1985, ACS' international headquarters is located in Israel and its North American headquarters resides in Plymouth, MN. ACS also has facilities in South Korea and distributors worldwide that deliver dependable customer service and product support. ACS is an ISO9001 certified manufacturing facility, demonstrating its continuous commitment to providing customers with reliable devices that are thoroughly tested with the latest available techniques.

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