Aerotech BA20-320 Servo Amplifier

The Aerotech BA20-320 servo amplifier (model BA20320) is a high‑performance three‑phase servo drive used to power Aerotech servo motors in precision motion systems. It delivers an 80–320 VAC, three‑phase output to the motor, enabling robust torque and smooth velocity control across a wide voltage window. As part of Aerotech’s BA‑series PWM amplifiers, the BA20‑320 accepts low‑level control commands from a motion controller and converts them into high‑power, balanced three‑phase drive signals for accurate servo performance. The BA20320 designation uniquely identifies this unit within Aerotech’s legacy drive lineup and it is commonly encountered in spare‑parts and repair contexts for Aerotech installations. Related market listings also reference a BA20‑320‑S variant, illustrating the model family’s continued presence in vendor catalogs.