Delta Electronics ASD-A2-0421-M AC Servo Drive

The Delta Electronics ASD-A2-0421-M AC Servo Drive delivers precise motion control for servo motors with approximately 400 W (0.4 kW) of output in a compact, panel-mounted unit. Part of the ASDA-A2 Series, it accepts 200–230 VAC single-phase input and provides position, speed, and torque control to achieve accurate positioning, smooth acceleration, and repeatable motion in CNC machines, packaging lines, robotics, and automated production environments. It communicates via RS-485 (Modbus) with optional fieldbus modules and supports high-resolution encoder feedback, enabling high-precision servo performance with a frequency response up to 1 kHz. Built-in cooling and comprehensive protection features—overcurrent, overvoltage, overload, and thermal protection—help ensure reliability in demanding industrial settings. The drive is designed to be compatible with Delta ECMA series servo motors and is intended for panel-mounted installation in control cabinets. Common replacements include ASD-A2-0421-L Servo Drive, ASD-B2-0421-B Servo Drive, and other ASD-A3-0421 variants.