Aerotech BA20-160 Servo Amplifier

The Aerotech BA20-160 is a servo amplifier for precise DC motor control in industrial automation and robotics. It drives both brush and brushless DC motors with self-commutation via Hall effect feedback, delivering peak currents to 20 A and continuous output at 10 A across a 24–160 VDC bus. The amplifier combines transformer isolation between control and power stages with opto-isolated drive and feedback signals, ensuring reliable operation in electrically demanding environments.

An integral 5 VDC, 250 mA auxiliary supply powers encoders and Hall effect devices. Advanced thermal management and a rugged aluminum housing enable stable performance to 3000 RPM with minimal backlash through high-resolution feedback and sinusoidal current command generation.

Technical Specifications

• Output Current: 20 A peak; 10 A continuous


• Bus Voltage Range: 24–160 VDC nominal (180–190 VDC overvoltage threshold)


• Input Power: 115 VAC, 50/60 Hz


• Auxiliary Supply: 5 VDC @ 250 mA


• Maximum Speed: 3000 RPM


• Motor Compatibility: Brush and brushless DC motors with Hall effect feedback


• Control Isolation: Transformer-isolated control voltage; opto-isolated drive, current feedback, and fault signals

Key Features

• Self-commutation with Hall effect feedback signal conditioning


• Programmable parameter customization for application-specific tuning


• Integrated overvoltage monitor with optional shunt regulator activation


• High-resolution feedback system for minimal backlash motion control


• Smooth sinusoidal current output


• Aluminum housing with two-orientation heat sink mounting


• Complete fault condition protection

Typical Applications

• Industrial automation and general factory control


• Robotics systems requiring precise positioning


• Power generation facilities


• Petrochemical processing equipment

Compatibility & Integration The BA20-160 operates as a standalone servo drive with transformer isolation and auxiliary 5 VDC output for sensor powering. Heat sink mounting to a larger thermally conductive surface is recommended to optimize thermal dissipation in sustained-operation environments.