Mitsubishi MR-J3-350A-ETHERCAT Servo Amplifier: Network-Enabled Precision for Modern Automation

This is the Mitsubishi MR-J3-350A-ETHERCAT, a smart 3.5kW servo amplifier from the advanced MELSERVO MR-J3 series. The MR-J3-350A-ETHERCAT combines high-performance motion control with the powerful EtherCAT network, making it ideal for connected, high-speed automation systems.

Core Advantages

• High-Speed Network: Integrated EtherCAT interface for real-time, multi-axis control.
• Reliable Power: Delivers 3.5kW of output with a 17A rated current.
• Precise Control: Uses sine-wave PWM and current control for smooth, accurate motor drives.
• Built-in Safety: Features a dynamic brake for controlled and safe motor stopping.
• Compact & Efficient: Compact design with low 30W control power consumption.

Complete Technical Specifications

• Brand & Series: Mitsubishi Electric, MELSERVO MR-J3 Series.
• Model: MR-J3-350A-ETHERCAT Servo Amplifier.
• Rated Output: 3.5 kW.
• Rated Current: 17 A.
• Supply Voltage: 3-phase, 200-230VAC, 50/60Hz.
• Input Current: 16 A.
• Primary Interface: EtherCAT (Copper, 100BASE-TX).
• Control Method: Sine-wave PWM control, IGBT-based.
• Brake Unit: Built-in dynamic brake.
• Control Power: 1-phase, 200-230VAC, 50/60Hz, 30W.
• Interface Power: 24VDC, 0.3A (for internal logic).
• Speed Accuracy: Approximately ±2%.
• Feedback System: Compatible with Mitsubishi absolute encoders.
• Protection Functions: Overcurrent, overload, overvoltage, regenerative error.
• Operating Temperature: 0°C to +55°C.
• Dimensions (H x W x D): Approx. 275 mm x 90 mm x 182 mm.
• Weight: Approximately 1.4 kg.
• Compatible Motors: Mitsubishi HF-KN, HF-SN, HC-KFS and other 200V-class MR-J3 servo motors.

Warranty & Support

Your investment is protected. This product is backed by a solid 12-month warranty covering any manufacturing defects.

Shipping Information

We ensure prompt delivery worldwide via trusted carriers: FedEx, UPS, and DHL. Tracking details are provided upon shipment.

Frequently Asked Questions (FAQ)

What is the key benefit of an EtherCAT interface over traditional pulse control?

EtherCAT offers real-time, highly synchronized control over many axes on a single network cable. It simplifies wiring, reduces latency, and allows for advanced features like distributed clock synchronization, which is essential for complex machines.

Does this amplifier require a separate EtherCAT master controller?

Yes. The MR-J3-350A-ETHERCAT acts as a slave device on the network. You need an EtherCAT master controller (e.g., a PLC like Mitsubishi's iQ-R series or a PC-based controller) to command and manage the motion.

Can I mix this EtherCAT model with other MR-J3 amplifiers on the same network?

In an EtherCAT network, you can mix different compatible slave devices. However, you cannot directly mix SSCNET III and EtherCAT MR-J3 amplifiers on the same physical network. The entire motion network segment must use the same protocol.

What does the ±2% speed accuracy mean in practice?

This means the actual motor speed under load will be within 2% of the commanded speed setpoint. For example, commanding 3000 RPM, the actual speed will be between 2940 and 3060 RPM. This is suitable for most velocity control applications.

How do I configure the amplifier parameters with EtherCAT?

Parameters are typically set using configuration software (e.g., Mitsubishi's MR Configurator2) over the EtherCAT connection. You can also use the built-in EtherCAT CoE (CANopen over EtherCAT) object dictionary for parameter access from the master controller.

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