Mitsubishi MR-J3-DU45KBS4 45kW High-Power Servo Drive

Command the most demanding industrial motion. The Mitsubishi MR-J3-DU45KBS4 is a powerhouse servo amplifier. It delivers a massive 45 kilowatts of controlled output power. This drive handles high-current applications up to 131 Amperes. It connects via high-speed SSCNET III/H and features integrated safety. This unit is built for reliability in heavy-duty automation and machinery.

• Extreme Power: Delivers 45 kW for driving large industrial servo motors.
• High Current Capacity: Rated for 131 A continuous operation.
• Advanced Safety: Features integrated drive safety and comprehensive protection functions.
• Wide Voltage Range: Compatible with 380V, 400V, 415V, and 440V 3-phase systems.

Core Electrical Specifications

• Brand & Model: Mitsubishi MR-J3-DU45KBS4 Servo Amplifier.
• Rated Output: 45 kilowatts (kW).
• Rated Current: 131 Amperes.
• Supply Voltage: 380 to 480 VAC, 3-phase (400V class).
• Communication: SSCNET III/H fiber optic network interface.
• Protection Functions: Overcurrent, Overvoltage, Overload, Undervoltage, Overspeed, Excessive Error protection.

Physical & System Specifications

• Cooling System: Integrated forced air cooling managed by drive safety logic.
• Operating Temperature: From 0°C to +55°C.
• Control Interface: Provides multiple digital inputs for external control signals.
• Safety Features: Integrated drive safety system for monitored operation.
• Compatibility: Designed as a drive unit compatible with Mitsubishi system components.
• Mounting: Requires robust panel mounting with adequate ventilation and clearance.

Integration & Application

• Network Role: Connects as a node on an SSCNET III/H network from a master controller.
• Motor Pairing: Must be paired with Mitsubishi MELSERVO servo motors in the 45kW power range.
• Power Requirements: Requires a stable, high-capacity 3-phase power source and appropriate protection devices (breakers, contactors).
• Regenerative Braking: Requires a suitably sized external regenerative brake resistor unit.
• Typical Use: Ideal for large machine tools, presses, injection molding machines, and heavy material handling systems.

Packaging & Warranty

• The Mitsubishi MR-J3-DU45KBS4 is supplied new in industrial-grade packaging.
• Includes the amplifier unit and comprehensive technical documentation.
• This product is covered by a 12-month warranty.
• Global shipping is arranged via FedEx, UPS, and DHL for reliable delivery.
• Full tracking details are provided upon shipment dispatch.

Frequently Asked Questions

What special electrical installation is required for a 45kW drive?

• Installation of the MR-J3-DU45KBS4 requires a qualified electrician. It needs a dedicated high-current 3-phase supply, appropriately sized cables, main circuit breakers, and magnetic contactors as specified in the manual. Proper grounding is critical.

How is the "integrated drive safety" different from basic protections?

• Integrated safety goes beyond standard fault detection (like overload). It involves monitored safety functions that can be part of a machine's overall safety system (e.g., Safe Torque Off, Safe Stop), helping the drive comply with machinery safety standards like ISO 13849.

What is involved in selecting the external regenerative resistor?

• For a 45kW drive, this is a critical and sizable component. Selection is based on the motor's inertia, the deceleration profile, and the duty cycle. You must use Mitsubishi's official sizing tools or consult directly with their engineering support to choose the correct resistor unit.

Can this drive be used in a multi-axis system?

• Yes. The SSCNET III/H network allows multiple drives, including several MR-J3-DU45KBS4 units, to be connected to a single motion controller for synchronized multi-axis control of large machinery.

Is the cooling fan noise significant?

• Yes, the cooling fans for a drive of this power are substantial and generate significant airflow noise. This must be considered when planning the location of the control cabinet, often necessitating a separate electrical room or acoustic treatment.

© 2025 Ubest Automation Limited. All rights reserved.
Original Source: https://www.ubestplc.com/
Contact: sales@ubestplc.com | Phone: +86 180 3000 5825