Delta Electronics, Inc. ASD-A0421 AC Servo Drive

The Delta Electronics ASD-A0421 AC Servo Drive is a 400 W servo drive for PLC-controlled motion systems that manages servo motor speed, position, and torque with high precision. Operating on 200–230 V AC (single- or three-phase), it supports Position, Speed, and Torque control, provides RS-232 and RS-485 communications, and accepts both incremental and high‑resolution encoder feedback. This panel-mounted drive is designed for industrial automation such as CNC machines, automated assembly lines, packaging systems, and robotics, with protection functions for overcurrent, overvoltage, overload, and overheating, forced-air cooling, and an operating range of 0–50°C; common replacements include ASD-A2-0421-M and ASD-B2-0421-B.