Mitsubishi MR-J3-15KBS-LR - High-Power 15 kW Servo Drive with Built-in Regeneration

Command heavy-duty motion with the Mitsubishi MR-J3-15KBS-LR. This industrial-grade AC servo drive from the MELSERVO-J3 series delivers a substantial 15 kW of rated output power for demanding applications like large presses, extruders, and crane systems. Operating on 200-230V AC three-phase power, it features five integrated regenerative resistors to efficiently handle braking energy and a high-speed SSCNET III/H interface for precise, networked motion control.

Complete Technical Specifications

Brand & Series: Mitsubishi Electric MELSERVO MR-J3 Series

Full Model Number: MR-J3-15KBS-LR

Product Type: High-Power AC Servo Amplifier (Drive)

Rated Output Power: 15 kW

Rated Output Current: 87 A

Supply Voltage: 200 - 230 VAC, 3-Phase, 50/60 Hz

Input Current Consumption: 64 A

Control Method: Sine Wave PWM Control, Current Control

Communication Interface: SSCNET III/H (High-Speed Fiber-Optic Network)

Regenerative Braking: 5 x Built-in Resistors, 4.5 Ω each

Interface Power Supply: 24V DC (for control interface electronics)

Cooling Method: Forced Ventilation Cooling (Fan-cooled)

Ambient Temperature: 0°C to +55°C (Operation), -20°C to +65°C (Storage)

Vibration Resistance: 5.9 m/s² (0.6G) or less

Power Consumption (Logic): 45 W

Enclosure Type: Open chassis (IP00), requires protective cabinet installation.

Installation & Compatibility Guide

Install the MR-J3-15KBS-LR in a well-ventilated control cabinet with sufficient space for airflow. Connect a three-phase 200-230V AC power supply with appropriately rated contactors and circuit breakers. Use the SSCNET III/H optical cable to link to the motion controller. Connect compatible high-power MELSERVO-J3 series servo motors. The built-in regenerative resistors handle typical braking energy; ensure the duty cycle of deceleration does not exceed the resistor's capacity to avoid overheating. Provide clean 24V DC for the interface.

Package & Warranty

What's Included: 1 x Mitsubishi MR-J3-15KBS-LR Servo Drive Unit.

Our Guarantee: This high-power drive is covered by a reliable 12-month warranty.

Fast Shipping Options

We deliver worldwide using reliable couriers: FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

What applications require a 15 kW servo drive?

This drive is suited for heavy machinery such as large metal forming presses, plastic injection molding machines, heavy-duty material handling systems, test stands, and any application requiring high continuous torque at medium speeds.

What is the benefit of having multiple built-in regenerative resistors?

Multiple resistors increase the total power dissipation capacity and provide redundancy. The MR-J3-15KBS-LR can handle frequent or high-inertia braking cycles without immediately requiring a large, external regenerative resistor unit, saving cost and panel space.

Can the internal resistors be disabled for an external unit?

Yes, parameters within the drive can typically be set to disable the internal resistors and enable connection of a larger external regenerative resistor if the application demands even higher braking energy dissipation.

What size power cables are needed for this drive?

Given the 64A input current, substantial power cabling is required. Consult local electrical codes and Mitsubishi manuals for the exact wire gauge, but expect to use large-gauge cables (e.g., 6 AWG or larger) and appropriate lugs for secure connection.

Is a special controller needed to use this drive?

Yes, you need a master motion controller with an SSCNET III/H master port, such as a Mitsubishi Q series Motion CPU. The drive acts as a slave on the network and executes motion commands received from this master controller.

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