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MR-J3-40BS

The MR-J3-40BS is a 400W servo amplifier from Mitsubishi’s MR-J3 series, designed for high-precision motion control in industrial automation. It features SSCNET III high-speed communication and supports advanced servo tuning for smooth, responsive operation.

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Key Specifications
Parameter Specification
Model MR-J3-40BS
Series MR-J3 (SSCNET III compatible)
Rated Output 400 W
Max. Output Current 2.4 A (continuous), 7.2 A (instantaneous)
Power Supply 3-phase AC 200-230V (±10%), 50/60Hz
Control Method IGBT PWM control (Sine wave drive)
Feedback Resolution 17-bit (131,072 pulses/rev)
Communication SSCNET III (Fiber-optic, 10 Mbps)
Regenerative Braking Built-in (external resistor optional)
3. Control & Performance Features
✔ Multi-Control Modes: Position / Speed / Torque control
✔ High-Speed Response: 2.5 kHz frequency response
✔ Auto-Tuning: Automatic servo gain adjustment
✔ Vibration Suppression: Adaptive Filter II for resonance damping
✔ Real-Time Monitoring: Torque, speed, and position feedback via SSCNET III

4. Protection & Safety
Overcurrent / Overvoltage protection

Dynamic brake (emergency stop)

Encoder error detection

Overheat protection

IP20 Protection (Open-frame design)

5. Physical & Environmental Specs
Parameter Value
Dimensions (W×H×D) 90 × 130 × 150 mm
Weight 1.5 kg
Cooling Method Natural convection
Mounting Panel-mounted
Operating Temp. 0°C to +55°C
Vibration Resistance 4.9 m/s² (10-55 Hz)