Mitsubishi MR-J3-11KB4 Servo Drive: High-Power 11kW 400V Amplifier

Drive large-scale automation with robust power. The Mitsubishi MR-J3-11KB4 is an 11kW servo amplifier designed for 400V class three-phase power, featuring high-speed SSCNET III/H control for demanding industrial applications.

Key Features for Heavy-Duty Motion Systems

• High Power Output: 11 kW rating with 32A current for large servo motors.
• High-Voltage Operation: Designed for 380-480V AC industrial mains (400V class).
• Advanced Network Control: SSCNET III/H fiber optic interface for precise multi-axis synchronization.
• Comprehensive Protection: Multiple integrated safeguards including overcurrent, overvoltage, and motor overheat protection.
• Effective Thermal Management: Forced ventilation cooling ensures stable performance under load.

Complete Technical Specifications

Brand: Mitsubishi Electric

Series: MELSERVO-J3 Series

Model: MR-J3-11KB4

Rated Output Power: 11000 W (11.0 kW)

Rated Output Current: 32.0 A

Supply Voltage: 3-Phase, 380-480V AC (400V Class)

Input Type: 3-Phase (3P)

Communication Interface: SSCNET III/H

Cooling Method: Forced Ventilation Cooling

Operating Temperature: 0°C to +55°C

Protection Features: Overcurrent shut-off, Regeneration overvoltage shut-off, Servo motor overheat protection, Encoder fault protection, Undervoltage & sudden power outage protection.

Control Modes: Position, Speed, and Torque control.

Feedback System: High-resolution absolute/ incremental encoder support.

Enclosure: Open type (IP00) for panel mounting.

FAQ – High-Power System Integration

What size of main power wiring is required for the 32A input?

Heavy-gauge industrial wiring is required (e.g., 6-8 AWG, depending on length and local codes). Always include a properly sized three-phase circuit breaker and magnetic contactor.

Is an external regenerative resistor needed?

Yes, for an 11kW drive, an external high-wattage regenerative resistor is almost always required to dissipate braking energy, especially for high-inertia loads or frequent stop/start cycles.

How critical is the forced ventilation cooling?

It is essential. Ensure unobstructed airflow at the intake and exhaust. Regularly clean air filters (if equipped) and check that the fan is operational to prevent overheating.

What does "sudden power outage protection" do?

This feature helps manage a safe shutdown or ride-through during a brief power loss, potentially preventing mechanical damage or process faults by using stored energy in the DC bus capacitors.

Can this drive be used as a standalone unit?

No. It requires a master controller (e.g., a Mitsubishi motion controller or PLC with SSCNET III/H card) to send command references and configuration parameters over the SSCNET network.

Package & Service Information

Package Includes: 1 x Mitsubishi MR-J3-11KB4 Servo Amplifier Unit.

Warranty: This high-power drive is covered by a 12-month warranty.

Shipping: Available for international shipment via FedEx, UPS, and DHL freight services.

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