Precise, safe, and dynamic: Mitsubishi Electric MR-J5 Servos with EtherCAT and FSoE

The MR-J5 servo drive from Mitsubishi Electric impresses with its high-precision motion control and certified functional safety via EtherCAT and FSoE, making it a real highlight for demanding automation processes.

Highest precision for industrial automation

The MELSERVO MR-J5 servo from Mitsubishi Electric ensures precise and reliable motion sequences in industrial applications. With its powerful drives ranging from 100 W to 7 kW, the series supports both single-axis and multi-axis applications. A battery-free 26-bit absolute encoder enables exceptionally fine position feedback for demanding control tasks. Communication cycle times start at 0.125 ms – ideal for real-time processes, robotics, and complex manufacturing.

The industry-leading frequency response rate for even greater performance

The performance of the J5 series is consistently enhanced by its industry-leading frequency response rate of 3.5 kHz. This feature ensures the drive responds quickly and precisely to control commands, controlling complex motion sequences with maximum dynamics. The result is efficiency and accuracy at the highest industrial level.

Servo technology with EtherCAT and fail-safe safety

In addition to standardised network protocols such as CANopen and Ethernet over EtherCAT, the integration of FailSafe over EtherCAT (FSoE) enables modern safety architectures directly within the network. Safety functions such as Safe Torque Off (STO), Safe Stop (SS1/SS2), Safely Limited Speed (SLS), Safe Operating Stop (SOS) and Safe Direction (SDI) are embedded via a single cable and are certified according to IEC 61508 and IEC 61800-5-2. Classification according to SIL 3 and PL e confirms high reliability for safety-critical systems.

Flexible integration and easy commissioning

The MR-J5 servo is suitable for various servo motors, including rotary, linear and direct drive types. Daisy-chain and single-cable topologies reduce installation effort and facilitate expansion in machine networks. Quick-Tune enables automatic fine tuning in just a few seconds. One-touch tuning, machine resonance suppression and Advanced Vibration Suppression Control II up to 8,000 Hz ensure stable movements and significantly reduce commissioning time.

Diagnostics and predictive maintenance

The system has integrated predictive maintenance tools based on Maisart AI technology. These tools enable condition-based monitoring of mechanical components, alarms and anomaly detection, as well as preventive maintenance, all of which can be carried out directly from the servo amplifier. This minimises downtime and increases system availability.

The MR-J5 servo is perfectly matched for demanding machines

The MR-J5 servo from Mitsubishi Electric is a modern drive solution for those who demand uncompromising precision and safety. Features such as comprehensive diagnostics, integration of all safety functions, easy installation, flexible network integration and an industry-leading frequency response make the system ideal for mechanical engineering, manufacturing plants and advanced automation projects.

Technical highlights at a glanc 

• Power range: 100 W to 7 kW, multi-axis version available
• Operating voltage: 380 to 480 V AC (three-phase)
• Encoder: 26-bit absolute encoder (multi-encoder system), battery-free
• Network: Compatible with EtherCAT, CC-Link IE TSN, SSCNET III/H, and CANopen
• Control modes: Synchronized position, speed, torque, and homing
• Safety functions: STO, SS1/SS2, SOS, SLS, SDI, SLI, SLT, SBC; SIL3, PL e
• Mounting: Single-cable technology with one-touch connector
• Tuning: Quick-Tune, automatic resonance suppression, vibration suppression up to 8000 Hz
• Frequency response: Up to 3.5 kHz for optimal performance
• Maintenance: AI-based predictive maintenance and integrated diagnostic functions

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