Mitsubishi MR-J3-350B 3.5kW Servo Drive

The Mitsubishi MR-J3-350B is a high-performance AC servo drive designed for demanding motion control applications. It delivers a powerful 3.5kW output with exceptional control accuracy. This drive is part of the reliable MELSERVO J3 series from Mitsubishi Electric.

Key Technical Specifications

• Manufacturer & Model: Mitsubishi MR-J3-350B AC Servo Drive.
• Rated Output: 3500W (3.5kW) with a rated current of 17 amps.
• Power Supply: 3-phase 200-230V AC input (170-253V permissible fluctuation).
• Control System: Sine-wave PWM control combined with a current control method.
• Communication: High-speed SSCNET III/H optical network interface for real-time control.
• Internal Voltage: Operates with a stable 24 VDC control voltage (+/-10% tolerance).

Design & Performance Features

• Integrated Safety: Features a built-in dynamic brake and regenerative resistor for safety and efficiency.
• Cooling System: Forced ventilation cooling ensures reliable operation under heavy loads.
• High Precision: Offers a maximum speed constancy of 18-bit resolution (262,144 pulses/rev).
• Fast Response: Achieves an average speed frequency response of up to 2100Hz.
• Automatic Setup: Includes automatic motor identification to simplify parameter configuration.
• Compact Design: Weighs only 5.25 lbs (2.38 kg) for easy handling and installation in tight spaces.

Packaging & Delivery Information

• One Mitsubishi MR-J3-350B Servo Drive unit.
• Complete set of installation and user documentation.
• All necessary mounting hardware and connection guides.
• Fast global shipping available via FedEx, UPS, and DHL carriers.

Professional FAQ

• What types of applications is this 3.5kW drive best suited for?

This drive excels in medium-to-high power applications such as CNC machine axes, industrial robots, packaging machinery, and material handling systems that require precise speed and position control.

• What does "automatic motor identification" do for the user?

This intelligent feature automatically detects the connected servo motor's parameters, drastically reducing setup time and minimizing configuration errors for faster commissioning.

• How does the built-in regenerative resistor function?

It safely dissipates excess energy produced when the motor decelerates or drives a descending load, preventing bus voltage overload and eliminating the need for an external resistor in many cases.

• What is the advantage of the 2100Hz frequency response?

The high frequency response enables the system to correct for disturbances extremely quickly, resulting in smoother motion, reduced settling time, and higher accuracy in dynamic applications.

• What are the installation requirements for the forced cooling system?

Ensure the drive is mounted vertically with clear space above and below as specified in the manual to allow proper airflow for the internal cooling fan to operate effectively.

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