Mitsubishi MR-J3-100B4RJ006 Servo Amplifier: 1kW 400V Drive with Full Closed Loop

Achieve ultimate precision in high-voltage systems. The Mitsubishi MR-J3-100B4RJ006 is a 1kW servo amplifier featuring a fully closed-loop control system and SSCNET III networking for high-accuracy applications on 400V power.

Key Features for Precision High-Voltage Control

• Full Closed-Loop Control: Enhances accuracy by using both motor and load-side feedback.
• High-Voltage Operation: Designed for 3-phase 400V AC industrial power supplies.
• High-Speed Network: SSCNET III fiber optic interface for precise multi-axis synchronization.
• Comprehensive Protection: Includes overcurrent, overvoltage, and thermal overload safeguards.
• Effective Cooling: Forced air cooling maintains stable performance.

Complete Technical Specifications

Brand: Mitsubishi Electric

Series: MELSERVO-J3 Series

Model: MR-J3-100B4RJ006

Rated Output Power: 1000 W (1.0 kW)

Rated Output Current: 2.8 A

Rated Voltage: 3-Phase, 400 V AC

Control Method: Fully Closed-Loop Control

Feedback Type: Incremental Encoder Feedback

Communication Protocol: SSCNET III

Cooling Method: Forced Air Cooling

Protection Features: Overcurrent, Overvoltage, Thermal Overload Protection

Operating Temperature: 0°C to +55°C

Storage Temperature: -20°C to +65°C (typical for series)

Approximate Dimensions: 356 mm x 254 mm x 152 mm (14" x 10" x 6")

Enclosure: Designed for panel mounting (specific IP rating to be confirmed).

FAQ – Full Closed-Loop & High-Voltage Setup

What is the advantage of "fully closed-loop" over standard control?

It compensates for mechanical errors (like ball screw backlash or stretch) by using a second encoder on the load/machine side. This provides higher end-point accuracy, which is critical for precision machining or assembly.

Does this amplifier require a separate load-side encoder?

Yes, for full closed-loop operation. You must install a separate linear or rotary encoder on the machine and connect it to the amplifier. The drive then compares motor and load position to correct errors.

Why choose a 400V model over a standard 200V model?

For efficiency and cable sizing. On higher power applications, using 400V reduces input current, allowing for smaller, less expensive power cables and reduced line losses, especially in large facilities.

Is the forced air cooling loud?

It produces a noticeable airflow sound. This is normal. Ensure the fan intake and exhaust are not blocked and that the cooling air is free of excessive dust to maintain performance and longevity.

Can I use this drive without implementing the full closed-loop?

Yes. It can operate in standard semi-closed loop mode using only the motor's encoder. You would not connect a load-side encoder and would configure the drive for standard control.

Package & Service Information

Package Includes: 1 x Mitsubishi MR-J3-100B4RJ006 Servo Amplifier Unit.

Warranty: This precision drive comes with a 12-month manufacturer's warranty.

Shipping: Available for international delivery via FedEx, UPS, and DHL.

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