Mitsubishi Electric MR-J3-70A AC Servo Amplifier

The Mitsubishi Electric MR-J3-70A AC Servo Amplifier is a 750 W drive designed for Mitsubishi MELSERVO-J3 motion control systems to power AC servo motors in precision automation applications. Commonly installed in CNC machines, packaging equipment, robotics, and automated assembly lines, it uses sine-wave PWM control and offers Position, Speed, and Torque control modes with a pulse-train/analog command interface and high-resolution encoder feedback, in a panel-mount package with forced-air cooling. It accepts 200–230 VAC input and includes built-in dynamic braking plus protection functions for overcurrent, overvoltage, overload, and thermal events; it is compatible with Mitsubishi HF and HG series servo motors. Related replacements include MR-J3-70B, MR-J4-70A, and MR-J2S-70A.