Mitsubishi MR-J4W2-44B Servo Amplifier

Series#: Mitsubishi

Product Details

Precision-engineered Mitsubishi MELSERVO-J4 Servo Amplifier with Drive, model MR-J4W2-44B, delivering 400W output for high-performance motion control.
Advanced sine-wave PWM control with current control method for smooth, accurate torque and speed regulation.
Built-in dynamic brake and regenerative resistance (20W) for reliable deceleration and energy recovery in demanding applications.
Supports SSCNET III/H high-speed synchronous communication with cycle times as low as 0.222 ms for real-time multi-axis coordination.
Compatible with fully closed-loop control and encoder output (A/B-phase pulse) for enhanced positioning accuracy.
Robust protective functions including overcurrent, overload, overvoltage, and encoder error protection for long-term operational safety.
100% Brand New & Original, securely packed and ready for reliable global shipping.

Specification

The Mitsubishi MELSERVO-J4 Servo Amplifier with Drive, specifically the MR-J4W2-44B model, is a high-performance dual-axis servo amplifier designed for demanding industrial automation applications requiring precise motion control and exceptional reliability. Operating with a 400W output per axis, this amplifier leverages sine-wave PWM control and current control methodology to deliver smooth torque and speed profiles across a wide range of servo motors. Its compact design integrates a built-in dynamic brake and regenerative resistance, ensuring safe deceleration and efficient energy management during high-inertia loads. The MR-J4W2-44B supports SSCNET III/H high-speed communication networks, enabling cycle times as low as 0.222 ms for synchronized multi-axis systems, and is fully compatible with fully closed-loop control and scale measurement functions for sub-micron positioning accuracy. With a robust set of protective features including overcurrent, overload, overvoltage, and encoder error protection, this amplifier is built to withstand harsh industrial environments while maintaining peak performance. Ideal for machine tools, robotics, and packaging systems, the MR-J4W2-44B offers a versatile power supply range (3-phase or 1-phase 200-240 V AC) and a USB interface for easy configuration via MR Configurator2 software.

Parameter	Specification (MR-J4W2-44B)
Output Rated Voltage	3-phase 170 V AC
Rated Current (Each Axis) [A]	2.8
Main Circuit Power Supply Input Voltage/Frequency	3-phase or 1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
Main Circuit Rated Current [A]	5.2
Permissible Voltage Fluctuation (Main Circuit)	3-phase or 1-phase 170 V AC to 264 V AC
Permissible Frequency Fluctuation	Within ±5%
Power Supply Capacity [kVA]	Refer to section 10.2 of manual
Inrush Current [A]	Refer to section 10.5 of manual
Control Circuit Power Supply Input Voltage/Frequency	1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
Control Circuit Rated Current [A]	0.4
Control Circuit Permissible Voltage Fluctuation	1-phase 170 V AC to 264 V AC
Control Circuit Permissible Frequency Fluctuation	Within ±5%
Control Circuit Power Consumption [W]	55
Interface Power Supply Voltage	24 V DC ± 10%
Interface Power Supply Capacity	0.35 A (Note 1)
Control Method	Sine-wave PWM control, current control method
Capacitor Regeneration Reusable Regenerative Energy [J]	21
Moment of Inertia Equivalent to Permissible Charging Amount [× 10⁻⁴ kg·m²]	4.26
Mass Equivalent to Permissible Charging Amount (LM-H3) [kg]	4.7
Mass Equivalent to Permissible Charging Amount (LM-K2 LM-U2) [kg]	10.5
Built-in Regenerative Resistance [W]	20
Dynamic Brake	Built-in
SSCNET III/H Command Communication Cycle	0.222 ms, 0.444 ms, 0.888 ms
Communication Function	USB: Connect a personal computer (MR Configurator2 compatible)
Encoder Output Pulse	Compatible (A/B-phase pulse)
Analog Monitor	None
Fully Closed Loop Control	Compatible (Note 8)
Scale Measurement Function	Compatible (Note 10)
Load-side Encoder Interface	Mitsubishi Electric high-speed serial communication (Note 6)
Protective Functions	Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off (electronic thermal), servo motor overheat protection, encoder error protection, regenerative error protection, undervoltage protection, instantaneous power failure protection, overspeed protection, and error excessive protection