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Linear Motor Stages

Photonics Spectra
May 2017
PI (Physik Instrumente) LP, Air Bearings and Piezo Precision MotionRequest Info
AUBURN, Mass. — Linear Motor Stages and Motion ControllerPhysik Instrumente LP has expanded its PIMag series of high-dynamics linear motor stages with two new models and a new motion controller.

The stages are equipped with incremental and absolute-type linear encoders for direct position measurement, ironless three-phase motors and single-phase voice-coil drives.

The V-551 models feature a 4- to 9-in. travel range and come equipped with an integrated absolute-measuring, encoder providing 2-nm resolution. Absolute encoders don’t require referencing and avoid accumulation of errors due to noise or cable issues. Precision crossed roller bearings with anti-creep cage assist guarantee a guiding accuracy of 1-µm straightness/100 mm.

With travel ranges of 5, 10 and 20 mm with a maximum velocity of 250 mm/s, the frictionless voice-coil drive of the V-52x series ensures high accuracy and long life. An integrated optical linear encoder and precision crossed roller bearings with anti-creep cage assist provide high positioning resolution and guiding accuracy. With a low moving mass and no moving cables, the voice-coil direct linear drive results in high scanning frequencies to tens of Hz while not being subject to wear and tear. The stages can also be easily stacked to make XY systems.

The compact C-891 motion controller is designed for sine-commuted, three-phase linear and rotary motors, and is equipped with automatic detection of the motor phase. It can run on A/B digital or analog encoder signals and incorporates BiSS interface support for absolute-measuring encoders.


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