July 10, 2019: PI expands its PIMag® series of high dynamics linear and rotary positioning systems with a new compact rotation stage.
High Force Torque Motor, Direct Drive, Optional Brake
The V-610 is equipped with a high-force 3-phase torque motor direct incremental encoder for position feedback and closed-loop operation. Despite its compact size, the ironless motor provides a peak torque of 1.2Nm (10.6 in-lbf). In contrast to classical worm-wheel driven rotary stages, torque motors do not require the help of gears to provide sufficient torque, eliminating friction and wear in the drive train. Ironless motors provide smoother running with better velocity control due to the lack of cogging effects caused by permanent magnets. To hold a position without the need to keep the motor energized, an electromagnetic safety brake is offered as an option.
High Resolution, Velocity, and Precision
The torque motor provides maximum angular velocity of 540°/sec (90 RPM). The integrated direct measuring optical encoder resolves angular motion down to 9µrad. In closed-loop operation, minimal incremental motion of 27µrad can be achieved.
Read about the Advantages and Applications of Direct Drive Motors
Low Profile, 1” Aperture, Combination with 6-DOF Motion Systems
The V-610 features a table diameter of 100mm (4”) and a very low profile of only 28mm (1.1”) allowing integration into tight spaces. The clear aperture of 25mm (1”) is an advantage in transmissive-light applications. The V-610 can also be combined with PI’s H-811 hexapod 6DOF parallel positioner, adding unlimited rotation to this compact 6-axis alignment system. An adapter plate for optical tables is also available.
A variety of precision motion controllers are offered, from modular to bench top devices. For the highest performance, PI recommends the ACS product line of EtherCat compatible precision motion controllers.