Mitsubishi Electric MR-J2S-40A-S004 Servo Drive

The Mitsubishi Electric MR-J2S-40A-S004 servo drive provides precise control of servo motors for positioning, speed, and torque in industrial motion control systems. This 400 W (0.4 kW) AC servo drive from the MELSERVO-J2-Super series accepts 200–230 VAC, three-phase power and uses Sinusoidal PWM control, with an incremental encoder-compatible feedback system and an analog/pulse-train input interface. Its frequency response of about 550 Hz supports high-speed, dynamic motion, while protective features guard against overcurrent, overvoltage, overload, and overheating; and it relies on natural air cooling with panel mounting for compact installation. It’s commonly used in CNC machines, packaging equipment, printing machinery, and automated production lines requiring accurate, responsive servo control, and is suitable for pick-and-place, labeling, conveyor automation, semiconductor equipment, and robotics where synchronized multi-axis operation is essential. Maintenance teams, OEMs, and system integrators often select this part for replacement, repair, retrofit, or upgrading of servo drive systems. Common replacements include Mitsubishi MR-J2S-40A, MR-J2S-70A, and MR-JE-40A.