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MR-J3-70B

The MR-J3-70B is a compact, high-performance servo amplifier from Mitsubishi's MR-J3 series, designed for precise motion control in industrial automation applications. This 700W unit features SSCNET III high-speed communication and supports advanced servo control functions.

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Key Specifications
Parameter Specification
Model MR-J3-70B
Series MR-J3 (SSCNET III compatible)
Rated Output 0.7 kW (700W)
Max. Output Current 4.5 A (continuous), 13.5 A (instantaneous)
Power Supply 3-phase AC 200-230V (±10%), 50/60Hz
Control Method IGBT PWM control
Feedback Resolution 17-bit (131,072 pulses/rev)
Communication SSCNET III (Fiber-optic)
Regenerative Braking Built-in + external resistor option
3. Control Features
Multi-Control Modes: Position/Speed/Torque control

High Response: 2.5kHz frequency response

Advanced Functions:

Vibration suppression control

Adaptive filter II

Auto-tuning

Mechanical resonance suppression

Real-Time Monitoring: Via SSCNET III interface

4. Protection & Safety
Overcurrent/Overvoltage protection

Dynamic brake function

Encoder error detection

Regenerative resistor protection

IP20 protection (open-frame design)

5. Physical Specifications
Parameter Value
Dimensions (W×H×D) 90 × 130 × 150 mm
Weight 1.5 kg
Cooling Method Natural convection
Mounting Panel mounting
6. Environmental Ratings
Operating Temperature: 0°C to +55°C

Storage Temperature: -20°C to +65°C

Humidity: 20-90% RH (non-condensing)

Vibration Resistance: 4.9 m/s² (10-55Hz)