EC: MR-JN Servo

Motion control – Servo drives: The MR-JN series of servo drives from Mitsubishi Electric Automation feature a "one-touch button" that automatically completes auto-tuning on the machine. This is a Control Engineering 2012 Engineers’ Choice honorable mention.


MR-JN Servo. The MR-JN series of servo drives from Mitsubishi Electric Automation feature a The MR-JN series of servo drives has been developed specifically for stepper motor applications. The compact, economical MR-JN provides OEMs and end users with servo performance on machines without the complexity of traditional stepper or servo solutions. The MR-JN can tune a machine with only one touch of a button on the front of the amplifier, automatically learning machine conditions and motion profiles through encoder feedback. The MR-JN’s amplifier then decides the best moment of inertia and the best gains for the machine on the fly, and completes the tuning process. A three-digit display indicates when tuning is complete. This whole process only takes about 2 minutes, rather than several hours or days. The three-digit display is also very helpful to maintenance engineers, providing details about any alarms and quickly identifying the cause of a problem.

Available in 50-, 100-, 200-, and 400-W sizes with 100- and 200-V ac power supplies, the MR-JN series provides the flexibility to tailor axes to a machine’s actual power requirement, minimizing system size and cost. Its compact bookcase-style mounting design means smaller electrical panels are needed for X-Y tables and applications such as conveyors; food processing machines; loaders and unloaders; robots; medical devices; laboratory automation equipment; and semiconductor, LCD, and solar battery processing machines.

Mitsubishi Electric Automation’s popular Advanced Vibration Controller feature is also available on the MR-JN amplifier and is easily implemented by setting the tuning parameters. And a new Tough Drive Function on the MR-JN reduces mechanical wear by continually monitoring and adjusting low-pass filters, eliminating resonance and vibrations as the machine ages.

Mitsubishi Electric Automation Inc.

Return to the list of the 2012 Engineers' Choice honorable mentions.

View the list of the 2012 Engineers' Choice winners.

View the complete list of the 2012 Engineers' Choice finalists.

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