Mitsubishi MR-J3-500BR-J006: 5kW Single-Phase Servo Amplifier with SSCNET III

The Mitsubishi MR-J3-500BR-J006 is a powerful 5 kW servo amplifier engineered for high-precision, single-phase power applications. It features a fully closed-loop control system for ultimate accuracy and utilizes the high-speed SSCNET III fiber optic network for seamless integration. With forced air cooling, an integrated dynamic brake, and a built-in regenerative resistor, this drive is a complete, robust solution for demanding 200V automation systems.

Complete Product Overview

• Brand & Series: Mitsubishi MELSERVO MR-J3 Series
• Model Number: MR-J3-500BR-J006
• Amplifier Type: High-Power AC Servo Amplifier
• Key Feature: 5 kW output for single-phase 200V power with SSCNET III & full closed-loop

Core Technical Specifications

• Rated Output Power: 5 kW (5000W)
• Supply Voltage: 200 VAC, Single-Phase
• Control Type: Fully Closed Loop Control
• Control Network: SSCNET III (High-speed fiber optic)
• Cooling Method: Forced Air Cooling (with internal fan)
• Braking System: Integrated Dynamic Brake with Built-in Regenerative Resistor
• Operating Temperature: 0°C to +55°C
• Protection Class: IP20 (Protected against fingers & large solids)

Key Features & Benefits

• High Power on Single-Phase: Delivers 5 kW of drive power from a standard 200V single-phase source, ideal for facilities without three-phase power.
• Ultimate Positioning Accuracy: Fully closed-loop control uses feedback from both the motor encoder and an external detector (like a linear scale) to correct for mechanical errors, achieving unmatched system precision.
• High-Speed Networked Control: SSCNET III fiber optic interface provides fast, noise-immune communication for precise multi-axis synchronization and centralized control.
• Complete Braking Solution: The integrated dynamic brake and regenerative resistor handle deceleration energy internally, simplifying installation and wiring.
• Effective Thermal Management: Forced air cooling ensures stable operation and thermal protection during continuous high-torque demands.

Typical Applications

This amplifier is designed for high-accuracy applications on single-phase power:

• High-precision CNC machining centers
• Advanced semiconductor manufacturing equipment
• Precision grinding and finishing machines
• Industrial laser cutting systems
• Any system requiring sub-micron accuracy with external scale feedback

Compatibility & System Integration

The MR-J3-500BR-J006 is designed to drive compatible 5 kW Mitsubishi servo motors (e.g., HC-SFS series). Its fully closed-loop function requires connection to an external linear scale or separate encoder via a separate interface unit. It connects to the motion control network via SSCNET III, linking to a master controller like a Mitsubishi Q or R Series motion CPU.

Ordering & Service Information

This product is sold as new and original, in factory packaging. It includes a standard 12-month warranty. We ship worldwide using reliable couriers: FedEx, UPS, and DHL.

Professional FAQs

What is the difference between "fully closed loop" and standard servo control?

Standard control uses only the motor's built-in encoder. Fully closed loop adds a second feedback device on the machine load itself. This allows the system to correct for errors like belt stretch or backlash, delivering true load position accuracy.

What is the main advantage of SSCNET III?

SSCNET III is a deterministic, high-speed fiber optic network. It ensures precise, jitter-free synchronization between axes and is completely immune to electrical noise, which is critical for high-accuracy systems.

Does the built-in regenerative resistor handle all braking needs?

For many 5 kW applications, it is sufficient. However, for applications with very high inertia or extremely frequent stop/start cycles, the internal resistor may overload. Monitor the drive's status and consult the manual for external resistor requirements.

Can this drive operate on 230VAC power?

It is rated for 200VAC. Operating it on 230VAC may be possible if it falls within the allowable voltage fluctuation range (e.g., +10%), but you must verify this in the detailed specifications to avoid damage.

What additional hardware is needed for fully closed-loop control?

You will need an external linear scale or separate encoder mounted on the machine, and likely a separate interface unit (like MR-HIF01) to connect that feedback to the SSCNET III system.

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