ETEL DSA2 Digital Servo Amplifier – Compact Design

The ETEL DSA2 is a digital servo amplifier that packs powerful performance into a miniaturized package. Designed for applications where space is at a premium, the DSA2 delivers precise current and velocity control for brushless DC motors and linear motors. Its small footprint does not compromise on functionality, making it a versatile choice for a wide range of industries.

Despite its compact size, the DSA2 features a fully digital current loop with high bandwidth, ensuring smooth and accurate motor operation. The amplifier is equipped with a range of feedback options, including incremental encoders and Hall sensors, and can be configured for torque, velocity, or position control modes. Its simple wiring and intuitive setup make it accessible to both experienced engineers and newcomers to motion control.

Key Features

• Ultra‑Compact: Fits in tight enclosures and portable devices.

• High Performance: Current loop bandwidth up to 2 kHz.

• Multiple Control Modes: Torque, velocity, and position control.

• Feedback Flexibility: Supports incremental encoders, Hall sensors, and analog Hall.

• Built‑in Protection: Overcurrent, overvoltage, overtemperature, and short‑circuit.

• Easy Integration: Standard analog and digital I/Os, plus optional fieldbus.

Technical Specifications

The DSA2 operates from a DC bus voltage of 24–48 VDC, making it suitable for low‑voltage applications. It provides a continuous output current of up to 5 Arms and a peak current of 10 Arms for 1 second. The switching frequency is fixed at 20 kHz, ensuring silent operation. The amplifier includes a heat sink with natural convection cooling, and the housing is rated IP20. Electrical connections are made via pluggable connectors for quick installation.

Applications

• Medical Devices: Infusion pumps, surgical robots, and diagnostic equipment.

• Laboratory Automation: Liquid handling, microplate readers, and sample transport.

• Light‑Duty Industrial: Pick‑and‑place, small conveyor drives, and indexing tables.

• Educational and Research: Robotics kits and teaching platforms.

Integration and Commissioning

ETEL provides a dedicated software package for configuring the DSA2, with an auto‑tune feature that quickly identifies motor parameters and sets optimal gains. The amplifier can be operated in stand‑alone mode with analog commands or integrated into a network using optional CANopen or RS‑485 modules. LED indicators display power, enable, and fault status, facilitating troubleshooting.

Benefits

• Space Savings: Allows more compact machine designs.

• Cost‑Effective: Affordable without sacrificing quality.

• Quick Deployment: Simple setup and minimal wiring.

• Reliability: Proven ETEL quality in a small package.

Conclusion

The ETEL DSA2 digital servo amplifier is the go‑to solution for engineers needing high‑performance motion control in a compact form. Its combination of precision, protection, and ease of use makes it an ideal choice for a wide spectrum of applications where space and budget are limited but performance cannot be compromised.