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.
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.
www.meau.com/eprise/main/sites/public/Products/Servo_Systems/default
Mitsubishi Electric Automation Inc.
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2012 Salary Survey
In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.












