Olsen Actuators brings you ESI Motion’s Atom! ESI Motion’s servo drive systems are designed for precision military, aviation, automotive, robotics, and specialized industrial applications where size and weight are critical. ESI Motion’s Single-Axis Proton leads the industry with its extremely small size and low weight. The Proton is a high-performance digital servo controller that can source 50 Amps with an 80 VDC bus to drive the most demanding applications. EtherCAT option coming soon! If you need a dual-axis drive which isn’t much larger, check out the (up to) 100A Atom!

Ultra-Low Weight & Compact Single-Axis Sized Servo Drive System

  • Continuous Motor Current: 50 Amps

  • Continuous Output Current Without Heatsink: 30 Amps

  • Max Output Power: 3850W (80 VDC Bus, Motor Current 50 Amps peak-of-sin)

Feature highlights include:

  • Bus Voltage Range: 8VDC – 80VDC
  • Single Axis
  • DC brushless
  • Resolver, Hall, BiSS-C, Quadrature Encoder and Sensorless feedback
  • Chassis cooling
  • CANOpen & EtherCAT (Coming Soon)
  • MIL-STD-883 Temperature/Vibration Acceptance Available
  • 5 Digital IO
  • 2-10x lighter than the competition
  • Wide temperature range
  • Ruggedized
  • ESI PC GUI compatible
  • Customisation available


  • Attack helicopter turret drive
  • Robotic arm positioner
  • Airborne antenna stabilizer
  • Radar systems

Customisation Available

  • Custom Ports
  • Firmware 
  • PWM Frequency changes
  • Mechanical modifications/repackaging
  • Development and integration services
  • Design and build cables & harnesses
  • Design and build custom solutions
  • Custom software protocols & firmware
  • Full program design and development support

Olsen Actuators and ESI Motion have the expertise to customise a solution for your project’s needs. Instead of taking an off the shelf product and having to customise in house, let Olsen and ESI do the heavy lifting and adapt your drive to your specific project's requirements, nothing is off the table. Just let us know, and we will work with you to engineer a solution.

Contact us today at info@olsenactuators.com to see how we can tailor a solution for you.

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