Actuator / Stepper Motor Specifications


Enhanced Precision

The standard stepper motor actuator option provides a very high level of precision due to the patented Ratio Drive™ technology. Although the actuator itself only achieves a resolution of 100 nanometers, with the 25x Ratio Drive™ this is improved by a factor of 25 resulting in an incredible resolutions of 4 nanometers!

Simple Interface

No external stepper motor drivers are required - these slim actuators actually contain an onboard RS-232 controller which interfaces directly with any standard PC serial port (or USB port with a low cost adapter)!

An included ActiveX/COM software driver makes it easy to get up and running quickly in any windows based development environment (including Visual Basic, Labview, and C++).

Manual Control

A convenient knob at the end of the unit permits manual control. During a manual move the actuator constantly updates the connected computer with it's position. If accidental movement is a concern, the manual control can be enabled and disabled via computer control.

Flexible Interface

The actuator is also available with direct connections to the two phases of the bipolar stepper motor (4 wires). Access to a Hall Effect limit sensor permits initialization at a home position. This option allows those with an existing system for driving stepper motors to avoid changing over to RS-232 based control. However, for new applications, this option is not recommended due to the high cost of separate controllers.

Min Typical Max Unit
Resolution   0.1   µm
Repeatability ±0.2 ±0.3 ±0.4 µm
Accuracy ±4 ±8 ±12 µm
Backlash 1.5 2 2.5 µm
Max Thrust 18 22 26 N
Max Speed   4   mm/s
Power Supply 12V DC unregulated 2.1mm center positive plug
Current Draw Idle: 100 mA Moving: 320 mA

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