ASD-A2-0421-U-AC SERVO DRIVE .4KW 220S A2 6.The ASD-A2-0421-U-AC Servo Drive, with a 0.4 kW output at 220V, provides accurate and economical motion control. It is ideal for automation, CNC machines, and robots, with many control modes, a small design, and an easy-to-use interface that ensures dependable performance in industrial applications.