Mitsubishi MR-J3-11KT4 Servo Amplifier: High-Power Precision for Demanding Drives

Meet the Mitsubishi MR-J3-11KT4, a high-performance 11kW servo amplifier from the trusted MELSERVO MR-J3 series. Designed for 400V-class industrial systems, the MR-J3-11KT4 delivers robust power and precise control for heavy-duty automation applications.

Detailed Technical Specifications

• Manufacturer & Series: Mitsubishi Electric, MELSERVO MR-J3 Series.
• Model: MR-J3-11KT4 Servo Amplifier.
• Rated Output: 11.0 kW.
• Rated Current: 32 A.
• Supply Voltage: 3-phase, 380-480VAC, 50/60Hz.
• Voltage Class: 400V class (compatible with 400V, 415V, 440V systems).
• Input Current Consumption: 23.1 A.
• Control Method: Sine-wave PWM control with IGBT inverter.
• Communication Interfaces: CC-Link (field network), RS-422 (serial communication).
• Feedback Interface: Compatible with Mitsubishi absolute/inc Encoder systems.
• Protection Functions: Overcurrent, overload, overvoltage, regenerative error, overheating.
• Cooling Method: Forced ventilation (internal fan).
• Operating Temperature: 0°C to +55°C.
• Storage Temperature: -20°C to +65°C.
• Dimensions (H x W x D): Approx. 400 mm x 260 mm x 260 mm.
• Weight: Approximately [Please refer to official manual for precise weight].
• Compatible Motors: Mitsubishi HF-SP, HA-LP, and other MR-J3 series high-power servo motors.

Warranty Commitment

We stand behind our products. This amplifier is covered by a comprehensive 12-month warranty against any manufacturing defects.

Shipping & Delivery

We offer fast and reliable international shipping through our partners: FedEx, UPS, and DHL. Tracking information is provided for all orders.

Frequently Asked Questions (FAQ)

What is the main application for an 11kW servo amplifier like this?

The MR-J3-11KT4 is ideal for high-power motion control. Common uses include large CNC machine tools, injection molding machines, printing presses, and material handling systems that require precise speed and position control of heavy loads.

Can I use this with a single-phase power supply?

No. This is a 3-phase input amplifier designed for 380-480VAC three-phase industrial power. Using it with a single-phase supply will not work and may cause damage.

How do I choose between CC-Link and RS-422 communication?

Use CC-Link for networked, multi-device control systems where high-speed data exchange is needed. Use RS-422 for simpler, point-to-point connection to a single controller or for parameter setup via a PC.

The unit is getting very hot. Is this normal?

Some heat is normal under load due to the forced-air cooling. However, ensure the cooling vents are not blocked. Check that the ambient temperature does not exceed 55°C. Verify the internal fan is operating. An overload condition can also cause excessive heat.

What safety precautions are important during installation?

Always disconnect all power before wiring. Ensure proper grounding of the amplifier and motor. Provide adequate space around the unit for airflow as per the dimensions. Use a correctly rated circuit breaker or fuse on the main power input line for protection.

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