Mitsubishi MR-J3-70BRJ004U517 Servo Amplifier: Specialized Drive for Linear Servo Motors

This is the Mitsubishi MR-J3-70BRJ004U517, a specialized servo amplifier from the MELSERVO MR-J3 series. The MR-J3-70BRJ004U517 is uniquely engineered to drive linear servo motors, offering 0.75kW of power with high-speed SSCNET III control. Its integrated compatibility with the LM-U2 cooling system makes it a complete solution for advanced linear motion applications.

Engineered for Linear Motion Performance

• Linear Motor Drive: Specifically designed to control Mitsubishi linear servo motors with high precision.
• High-Speed Network: Uses the SSCNET III fiber optic interface for ultra-fast, synchronized control.
• Integrated Cooling: Compatible with the LM-U2 (U517) cooling system for effective thermal management.
• Advanced Control: Employs vector control for optimal force (thrust) and speed regulation.
• High Dynamic Response: Capable of high peak current (54A) for rapid acceleration and deceleration.

Complete Technical Specifications

• Brand & Series: Mitsubishi Electric, MELSERVO MR-J3 Series.
• Model: MR-J3-70BRJ004U517 Servo Amplifier.
• Rated Output: 0.75 kW.
• Motor Type: Specifically for Linear Servo Motors (e.g., LM-H2, LM-F series).
• Supply Voltage: 1-phase, 200VAC, 50/60Hz.
• Control Method: Vector Control.
• Communication Interface: SSCNET III (fiber optic).
• Peak Current: 54 A (short duration).
• Continuous Current: Approximately [Refer to official specs for rated current].
• Cooling System: Designed for use with LM-U2 forced air cooling unit (U517 variant).
• Inverse Efficiency: 0.8 (related to regenerative energy handling).
• Mass: 1.4 kg (amplifier unit).
• Protection Functions: Standard overcurrent, overload, overvoltage, and overheating protection.
• Operating Temperature: 0°C to +55°C (with adequate cooling).

Warranty and Support

Your investment in advanced technology is protected. This product comes with a standard 12-month warranty.

Global Shipping

We arrange international shipping via FedEx, UPS, and DHL. Tracking information is provided for all orders.

Frequently Asked Questions (FAQ)

What is a linear servo motor, and why does it need a special amplifier?

A linear servo motor produces direct linear force and motion without mechanical conversion (like a ballscrew). The MR-J3-70BRJ004U517 is specially tuned for their control characteristics, providing the precise thrust and high acceleration capabilities they are designed for.

Is the LM-U2 cooling unit optional or required?

For continuous operation at full rating, the LM-U2 cooling unit (U517) is typically required. Linear motors and their drives can generate significant heat. The dedicated cooling unit ensures thermal stability and prevents overload faults.

What does "Inverse Efficiency 0.8" mean?

This parameter relates to the regenerative energy handling capability. An inverse efficiency of 0.8 indicates good efficiency in managing the energy fed back from the motor during deceleration, which is crucial for high-cycle linear motion to prevent overvoltage faults.

Can this amplifier be used with rotary servo motors?

No. Amplifiers designed for linear motors, like the MR-J3-70BRJ004U517, have different control algorithms and tuning parameters optimized for linear motor dynamics. They are not interchangeable with standard amplifiers for rotary motors.

What are typical applications for this linear servo system?

This system is used in high-precision, high-speed applications such as semiconductor manufacturing equipment (chip mounters, wire bonders), precision assembly machines, high-speed pick-and-place systems, and advanced CNC stages where direct drive linear motion offers superior performance.

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