Mitsubishi MR-J4-700B Servo Amplifier

Series#: Mitsubishi

Product Details

Mitsubishi MELSERVO-J4 Series Servo Amplifier MR-J4-700B – 7 kW high-performance AC servo drive for demanding industrial automation.
Sine-wave PWM control with current control method ensures precise torque and speed regulation.
Built-in dynamic brake for safe, rapid deceleration in high-inertia applications.
Supports SSCNET III/H communication cycle down to 0.222 ms for ultra-fast multi-axis synchronization.
Compatible with fully closed loop control and scale measurement for advanced positioning accuracy.
Integrated functional safety STO (IEC/EN 61800-5-2) for operator protection.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The Mitsubishi MELSERVO-J4 Series Servo Amplifier MR-J4-700B is a robust 7 kW drive engineered for precision motion control in high-speed production lines. With a 3-phase 170 V AC output and a rated current of 37 A, it delivers smooth, reliable power to servo motors in packaging, robotics, and machine tool applications. The amplifier supports both AC and DC input configurations, with a wide permissible voltage range (170–264 V AC or 241–374 V DC) and frequency tolerance within ±5%. It features a built-in dynamic brake for models up to 500B, while the 700B requires an external option for dynamic braking. The SSCNET III/H communication interface enables cycle times as low as 0.222 ms, ensuring real-time synchronization across multiple axes. Fully closed loop control and scale measurement functions are compatible, enhancing positioning accuracy. Encoder output pulses (A/B/Z-phase) and two analog monitor channels provide flexible feedback and diagnostics. Protective functions include overcurrent, regenerative overvoltage, overload, motor overheat, encoder error, undervoltage, and more. The amplifier also integrates STO functional safety per IEC/EN 61800-5-2. With a control circuit power supply of 1-phase 200–240 V AC (50/60 Hz) and a power consumption of 45 W, the MR-J4-700B is a reliable choice for advanced automation systems.

Parameter	Specification (MR-J4-700B)
Output Rated Voltage	3-phase 170 V AC
Rated Current [A]	37
AC Input Voltage/Frequency	3-phase 200–240 V AC, 50/60 Hz
DC Input Voltage (Note 16)	283–340 V DC
AC Input Rated Current [A]	28.9
Permissible Voltage Fluctuation (AC)	3-phase 170–264 V AC
Permissible Voltage Fluctuation (DC)	241–374 V DC
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 (AC)	1-phase 200–240 V AC, 50/60 Hz
Control Circuit Power Supply (DC)	283–340 V DC
Control Circuit Rated Current [A]	0.3
Control Circuit Power Consumption [W]	45
Control Circuit Inrush Current [A]	Refer to section 10.5
Interface Voltage	24 V DC ± 10%
Interface Current Capacity [A]	0.3 (including CN8 connector signals, Note 1)
Control Method	Sine-wave PWM control, current control method
Dynamic Brake	External option (Note 9, 12)
SSCNET III/H Communication Cycle (Note 8)	0.222 ms, 0.444 ms, 0.888 ms
Fully Closed Loop Control	Compatible (Note 7)
Scale Measurement Function	Compatible (Note 10)
Load-Side Encoder Interface (Note 5)	Mitsubishi Electric high-speed serial communication
Communication Function	USB (MR Configurator2-compatible)
Encoder Output Pulses	Compatible (A/B/Z-phase pulse)
Analog Monitor	Two channels
Protective Functions	Overcurrent, regenerative overvoltage, overload, motor overheat, encoder error, regenerative error, undervoltage, instantaneous power failure, overspeed, error excessive, magnetic pole detection, linear servo control fault
Functional Safety	STO (IEC/EN 61800-5-2)