Mitsubishi MR-J3-20B Servo Amplifier MRJ320B

Description:

The Mitsubishi MR‑J3‑20B Servo Amplifier (MRJ320B) is an AC servo drive used to precisely control Mitsubishi servo motors for position, speed, and torque in industrial motion systems. Installed in automated machinery requiring responsive and accurate motion control. Maintenance teams and system integrators use this drive for replacement, retrofit, and performance upgrades to improve motion precision and dynamic response in automation systems.

Applications:

The MR‑J3‑20B servo amplifier is used in industrial automation environments that demand controlled motion and precise positioning. Typical applications include CNC machining centers, robotics, pick‑and‑place systems, conveyors, packaging equipment, printing machines, and automated assembly lines. With digital feedback and tuning features, it supports smooth motion profiles and reliable performance in demanding production processes.

Technical Specifications:

• Manufacturer: Mitsubishi Electric
• Model / Part Number: MR‑J3‑20B (MRJ320B)
• Product Type: AC Servo Amplifier / Servo Drive
• Series: MR‑J3
• Input Voltage: Typically 200–230 VAC three‑phase
• Rated Output Current: Approximately 2–3 A (model dependent)
• Control Method: Digital servo control with feedback support
• Command Input: Pulse train or compatible network interface
• Feedback Support: Encoder (incremental/absolute depending on setup)
• Protection Features: Overcurrent, overvoltage, overtemperature, phase loss
• Cooling: Integrated heatsink / forced air cooling
• Mounting: Panel or control cabinet installation
• Application: Precision motion control in automated systems

Common Replacements:

• Mitsubishi MR‑J3‑40B Servo Amplifier
• Mitsubishi MR‑J2S‑20B Servo Drive
• Yaskawa SGDV‑R60A01A Servo Drive