Ultra-Low Weight & Compact Single-Axis Sized Servo Drive System
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. These tiny drives have a high-power density and proven field reliability.
If you need a Dual-Axis drive which isn’t much larger, check out the (up to) 100A Atom!
EtherCAT as an available option is coming soon!

Feature highlights include:
- 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 competition
- Wide temperature range
- Ruggedized
- ESI PC GUI compatible
Applications:
- Attack helicopter turret drive
- Robotic arm positioner
- Airborne antenna stabilizer
- Radar systems
Specifications
Bus Voltage Range: | 8VDC – 80VDC |
---|---|
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) |
Wide Operating Temperatures: | Aerospace -55°C to 100°C Industrial -40°C to 85°C Commercial -30°C to 60°C |
WEIGHT | 0.59oz (16.72g) |
SIZE | 37.1mm x 37.1mm x 10.4mm (1.47” L x 1.47” W x 0.41” H) |
Downloadable Materials
What Can The Proton Do For You?
ESI Motion’s servo drive systems are designed for precision military, aviation, automotive, robotics, and specialized industrial applications where size and weight are critical.
Contact ESI Motion to begin working with our team on your servo drive solution today!