Aerotech 4020-LS Linear Servo Amplifier

The Aerotech 4020-LS Linear Servo Amplifier is a single‑phase DC motor driver designed for precision motion tasks, delivering up to ±40 V peak output and ±20 A peak (±5 A continuous) from a compact enclosure. In a 238.1 mm (9.38 in) long, 185.6 mm (7.3 in) wide, 152.4 mm (6 in) high chassis weighing 6.4 kg (14 lb), the unit supports a peak power dissipation of 1000 W and a continuous dissipation of 250 W. The amplifier section provides 2 A per volt of input gain, a bandwidth of 500 Hz, and a peak power output of 500 W with 160 W continuous, along with a 2 A current limit and a 1 A shutdown threshold. Open‑loop voltage gain is specified at 100 dB, with drift of 10 µV/°C and an offset adjustable to zero. Operating temperature is 0 to 50°C (derating 2.0 W/°C above 25°C); storage temperature ranges from −30 to 80°C. The device requires a control closure capable of handling 20 mA for proper shutdown behavior and has a 3AG slow‑blow fuse typical of its protection scheme. These specifications position the 4020‑LS as a high‑performance linear servo amplifier for DC motor control in demanding motion systems.