Mitsubishi Electric MR-J4-200B Servo Amplifier

The Mitsubishi Electric MR-J4-200B Servo Amplifier is an AC servo drive that provides precise speed, position, and torque regulation for Mitsubishi servo motors, enabling high-speed, accurate motion in automation systems. As a member of the MR-J4 series, it is commonly deployed in CNC machines, robotics, automated assembly lines, and packaging equipment where dynamic performance and smooth motion are critical. Key specifications include 200–230 VAC three-phase input, a model-dependent rated current in the 15–20 A class, and an advanced digital servo control method, with command input options including pulse train or network interface depending on the model; encoder feedback (incremental or absolute) is supported, and protections cover overcurrent, overvoltage, overtemperature, and phase loss. It communicates with Mitsubishi PLC networks and fieldbus options, uses integrated cooling (fan/heat sink), and is designed for cabinet or panel mounting. Applications center on precision motion control in automated systems such as machining centers, gantry systems, pick-and-place robotics, conveyor positioning, and printing equipment; safety and tuning features are built in to support demanding automation tasks. Common replacements include MR-J4-100B and MR-J4-300B servo drives.