Mitsubishi MR-J4W3-444B Servo Amplifier

Series#: Mitsubishi

Product Details

Product Model: MITSUBISHI MELSERVO-J4 SERVO AMPLIFIER WITH DRIVE 400W MR-J4W3-444B – a high-performance dual-axis servo amplifier for precision motion control.
Rated output current of 2.8 A per axis (total 5.6 A) for a combined 400W drive capacity in a compact package.
Advanced Sine-wave PWM control with current control method for smooth, efficient motor operation.
Built-in dynamic brake and regenerative resistor (100W) for reliable stopping and energy recovery.
SSCNET III/H communication cycle options: 0.222 ms, 0.444 ms, or 0.888 ms for ultra-fast, synchronized motion.
Comprehensive protective functions including overcurrent, regenerative overvoltage, overload, and encoder error protection.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The MITSUBISHI MELSERVO-J4 SERVO AMPLIFIER WITH DRIVE 400W MR-J4W3-444B is a state-of-the-art dual-axis servo amplifier designed for demanding industrial automation applications. This model integrates two independent servo drives in a single unit, delivering precise control for compact machinery requiring synchronized motion. It features a 3-phase 170 V AC main circuit power supply (with permissible fluctuation from 170 V AC to 264 V AC) and a control circuit input of 1-phase 200 V AC to 240 V AC, 50/60 Hz. The amplifier supports advanced SSCNET III/H communication for high-speed command cycles, ensuring minimal latency in multi-axis systems. With a built-in regenerative resistor rated at 100W and a dynamic brake, it handles energy recovery and emergency stops efficiently. The unit is protected against overcurrent, regenerative overvoltage, overload (electronic thermal), servo motor overheat, encoder errors, undervoltage, instantaneous power failure, overspeed, and excessive error conditions. USB connectivity allows easy configuration via MR Configurator2 software. This model is not compatible with encoder output pulses, fully closed loop control, or scale measurement functions, making it ideal for standard open-loop or semi-closed loop applications.

Parameter	Specification (MR-J4W3-444B)
Model	MR-J4W3-444B
Rated Voltage (Main Circuit)	3-phase 170 V AC
Output (Each Axis) Rated Current [A]	2.8
Power Supply / Frequency (Main Circuit)	3-phase or 1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
Rated Current (Main Circuit) [A]	7.8
Permissible Voltage Fluctuation (Main Circuit)	3-phase or 1-phase 170 V AC to 264 V AC, 50 Hz/60 Hz
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	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/Frequency	24 V DC ± 10%
Interface Power Supply Capacity	0.45 A (Note 1)
Control Method	Sine-wave PWM control, current control method
Reusable Regenerative Energy [J]	30
Moment of Inertia Equivalent to Permissible Charging Amount [× 10⁻⁴ kg·m²]	6.08
Mass Equivalent to Permissible Charging Amount (LM-H3) [kg]	6.7
Mass Equivalent to Permissible Charging Amount (LM-K2 / LM-U2) [kg]	15
Built-in Regenerative Resistance [W]	100
Dynamic Brake	Built-in
SSCNET III/H Command Communication Cycle	0.222 ms (Note 8), 0.444 ms, 0.888 ms
Communication Function	USB: Connect a personal computer (MR Configurator2 compatible)
Encoder Output Pulse	Not compatible
Analog Monitor	None
Fully Closed Loop Control	Not compatible
Scale Measurement Function	Not compatible
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