Mitsubishi Electric MR-J2S-70A Servo Drive Amplifier

The Mitsubishi Electric MR-J2S-70A is an AC servo drive amplifier that provides precise 0.75 kW motion control for 200–230 VAC systems, enabling accurate position, speed, and torque in CNC machines, robotic systems, conveyors, and automated equipment. It drives 750 W class servo motors and exposes position, speed, and torque control through a pulse/analog input interface for general-purpose control. Key specs include Manufacturer Part Number MR-J2S-70A, Series MELSERVO J2-Super, input voltage 200–230 VAC (1- or 3-phase), 50/60 Hz, output current approximately 5.1 A (typical), and built-in features such as dynamic brake and encoder feedback control. Compatible Mitsubishi HC-KFS, HC-MFS, and HC-SFS motors are supported, with protections for overcurrent, overvoltage, overload, and encoder faults; cooling is provided by a built-in fan. The unit mounts on a panel and measures roughly 70 × 175 × 190 mm, weighing about 1.7–1.8 kg, with an operating range of 0 °C to 50 °C. Common replacements include MR-J4-70A, MR-JE-70A, and SGDV-R70A01A. This servo drive is well-suited to CNC centers, robotic arms, pick-and-place systems, packaging machinery, and automated assembly lines where precise, repeatable motion is essential.