Mitsubishi MR-J4W2-77B Servo Amplifier

Series#: Mitsubishi

Product Details

High-performance dual-axis servo amplifier designed for precise motion control in industrial automation applications.
Supports SSCNET III/H high-speed synchronous network communication with cycle times as low as 0.222 ms.
Built-in dynamic brake and regenerative resistor for enhanced safety and energy efficiency.
Compatible with fully closed loop control and scale measurement functions for superior positioning accuracy.
Robust protection suite: overcurrent, overvoltage, overload, undervoltage, and encoder error protection.
USB connectivity for easy setup and tuning via MR Configurator2 software.
100% Genuine and New, rigorously inspected before international dispatch.

Specification

The MITSUBISHI MELSERVO-J4 SERVO AMPLIFIER WITH DRIVE 750W MR-J4W2-77B is a state-of-the-art dual-axis drive solution engineered for demanding motion control tasks. This amplifier leverages sine-wave PWM control and current control methods to deliver smooth, high-torque performance across a wide speed range. With support for SSCNET III/H communication, it ensures real-time synchronization in multi-axis systems, making it ideal for robotics, packaging, and machine tool applications. The unit’s compact design integrates dynamic braking and regenerative energy management, reducing external component needs while maintaining operational reliability under fluctuating loads.

Parameter	22B Model	44B Model	1010B Model
Output Rated Voltage	3-phase 170 V AC
Rated Current (each axis) [A]	1.5	2.8	6
Main Circuit Power Supply Input Voltage/Frequency	3-phase or 1-phase 200 V AC to 240 V AC, 50/60 Hz	3-phase 200 V AC to 240 V AC, 50/60 Hz
Rated Current (Note 11) [A]	2.9	5.2	9.8
Permissible Voltage Fluctuation	3-phase or 1-phase 170 V AC to 264 V AC	3-phase 170 V AC to 264 V AC
Permissible Frequency Fluctuation	Within ±5%
Power Supply Capacity [kVA]	Refer to section 10.2
Inrush Current [A]	Refer to section 10.5
Control Circuit Power Supply Input Voltage/Frequency	1-phase 200 V AC to 240 V AC, 50/60 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%
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 Energy (Note 2) [J]	17	21	44
Moment of Inertia Equivalent to Permissible Charging Amount (Note 3) [× 10⁻⁴ kg·m²]	3.45	4.26	8.92
Mass Equivalent to Permissible Charging Amount (Note 4) [kg] - LM-H3	3.8	4.7	9.8
Mass Equivalent to Permissible Charging Amount (Note 4) [kg] - LM-K2 / LM-U2	8.5	10.5	22
Built-in Regenerative Resistance [W]	20	100
Dynamic Brake	Built-in
SSCNET III/H Command Communication Cycle (Note 9)	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