The MITSUBISHI MELSERVO-J4 SERIES SERVO AMPLIFIER 7KW MR-J4-700A is a state-of-the-art AC servo drive engineered for high-torque, high-speed industrial automation. This amplifier is part of the renowned J4 series, offering advanced control algorithms and robust construction for applications such as CNC machines, robotics, and packaging lines. With a rated current of 37 A at AC input and 28.9 A at DC input, the MR-J4-700A delivers exceptional power density while maintaining precise sine-wave PWM current control. Its versatile power supply options include 3-phase 200-240 V AC (50/60 Hz) or DC input range of 283-340 V DC, with permissible voltage fluctuations of 170-264 V AC and 241-374 V DC. The interface power supply requires 24 V DC ±10% at 0.5 A, ensuring reliable signal processing. For high-inertia loads, an external dynamic brake option is available (refer to manual for details). Fully closed-loop control is supported via a load-side encoder interface using Mitsubishi Electric high-speed serial communication. Communication functions include USB for direct PC connection via MR Configurator2 and RS-422/RS-485 for multi-axis networking (up to 32 axes). Encoder output pulses (A/B/Z-phase) and two analog monitor channels are provided for feedback and diagnostics. All specifications are based on standard operating conditions; refer to the official manual for power supply capacity and inrush current details.
| Parameter |
Specification |
| Rated Voltage (AC Input) |
3-phase 200 V AC to 240 V AC, 50/60 Hz |
| Rated Voltage (DC Input) |
283 V DC to 340 V DC |
| Rated Current (AC Input) |
37 A |
| Rated Current (DC Input) |
28.9 A |
| Permissible Voltage Fluctuation (AC Input) |
3-phase 170 V AC to 264 V AC |
| Permissible Voltage Fluctuation (DC Input) |
241 V DC to 374 V DC |
| Permissible Frequency Fluctuation |
Within ±5% |
| Power Supply Capacity |
Refer to section 10.2 of manual |
| Inrush Current |
Refer to section 10.5 of manual |
| Interface Power Supply Voltage |
24 V DC ± 10% |
| Interface Power Supply Current |
0.5 A (including CN8 connector signals) |
| Control Method |
Sine-wave PWM control, current control method |
| Dynamic Brake |
External option (for 700A model) |
| Fully Closed Loop Control |
Compatible |
| Load-Side Encoder Interface |
Mitsubishi Electric high-speed serial communication |
| Communication Function |
USB (MR Configurator2) and RS-422/RS-485 (1:n, up to 32 axes) |
| Encoder Output Pulses |
Compatible (A/B/Z-phase pulse) |
| Analog Monitor |
Two channels |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22