New Parker MPN Motors Replace Rockwell N-Series

ROHNERT PARK, CA (October 19, 2006) - Parker's Electromechanical Automation Division, a leading supplier of motion control technology, announces the release of its MPN series of brushless servo motors. The MPN motors are designed to replace the now-obsolete N-Series motors recently discontinued by Rockwell Automation/Allen-Bradley. The MPN offers more torque per frame size than the existing N-Series motors.

Parker's MPN motors feature the proven technology of our MaxPlus motor family and are modified to match the mechanical and electrical characteristics of the Rockwell N-Series family. The front motor mount, shaft dimensions, connectors and the electrical Ke (back-emf) of the motors are identical to that of the N-series motors. The motor's inertia is usually within 10% of the N-Series, so tuning of an existing system will be rare. One minor drawback is some of the motors may be slightly longer than the N-Series.

"The MPN's use of neodymium magnets gives the MPN extremely high torque when compared to the N-Series; says Pat Berkner, rotary motor product manager. "This means an existing system will benefit greatly by using the MPN motors. Some motors' Kt (torque constant) is twice that of the N-Series. This means less current, less energy, and less heat generated per a given application, yet more torque."

MPN motors are ideal in applications for packaging, printing, semiconductor, and machine tool industries. "Putting the MPN in places where the N-Series was installed is a benefit to the user. Since these motors have the same mounting, the same connectors, and very similar electrical characteristics, it is very easy to install an MPN. All motor configuration files are supplied on the Internet to make it even easier to get an MPN installed and running with minimal effort. If your existing machine needs more torque -- more throughput -- put on the MPN motors," says Berkner.

MPN motors replace all the Rockwell N-Series motors, including the N3406, N3412, N4214, N4220, N5630, N5637, and N5647. All MPN motors have a 2000-line encoder, a 24 volt brake option, and are rated for a 340 volt DC bus. The N2302 and N2304 come standard with a 1000-line encoder and are rated for 170 volts DC. They too have an optional 24 volt brake. The MPN motors are UL and CE rated, and are sealed to IP65 as a standard.

All the MPN motor configuration files, which contain the electrical setup parameters, are available to the user on the Web site. This means that you simply need to upload the motor's configuration file (.mxf) to your existing Rockwell motor data base, select that motor, and you are ready to run.

About Parker Electromechanical Automation

A division of Parker Hannifin Corporation's Automation Group since 1987, Electromechanical Automation is a pioneer, developer and manufacturer of full-spectrum computer-based motion controllers, servo/step motor drives, servo motors and human-machine interfaces, positioning systems, gearheads and gear motors. These products automate the manufacturing of a significant fraction of the world's goods and services. Electromechanical Automation products are sold via independent authorized Automation Technology Centers-a group of nearly 100 professional, highly trained organizations with more than 135 points-of-presence throughout the world-or directly from Electromechanical Automation by logging on to An informative and up-to-date Web site with downloadable libraries, tutorials, and background information on motion control and automation is located at

About Parker Hannifin

With annual sales exceeding $9 billion, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial and aerospace markets. The company employs more than 57,000 people in 43 countries around the world. Parker has increased its annual dividends paid to shareholders for 50 consecutive years, ranking it among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company's Web site at or its investor information site at


Pat Berkner

Product Sales Manager


Electromechanical Automation Division

2101 North Broadway

New Ulm, MN 56073

All Topics