The MR-J4-70A is a 0.7kW servo amplifier from Mitsubishi Electric's MR-J4 Series, designed for precision motion control in industrial automation applications. Featuring 22-bit high-resolution feedback and advanced vibration suppression, it delivers exceptional speed stability and positioning accuracy for demanding motion tasks.
Key Specifications
Parameter Specification
Model MR-J4-70A
Rated Output 0.7 kW (0.94 HP)
Rated Current 3.5 A
Peak Current 10.5 A (300% for 50ms)
Input Voltage 3-phase 200-230V AC (±10%), 50/60 Hz
Control Modes Position / Speed / Torque
Feedback Resolution 22-bit absolute encoder (multi-turn)
Communication SSCNET III/H (fiber optic)
Protection Class IP20 (requires enclosure)
Regenerative Brake Built-in (external resistor optional)
Ambient Temperature 0°C to +55°C (operation)
Weight 1.3 kg
Main Features
✔ Ultra-High Precision – 22-bit encoder feedback for micron-level control
✔ Advanced Vibration Suppression – Adaptive filter reduces mechanical resonance
✔ Fast Setup – Auto-tuning with MR Configurator2 software
✔ Safety Compliance – STO (Safe Torque Off) supported (SIL3/PLe)
✔ Energy Efficient – Regenerative braking reduces power consumption