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Three-phase locally-assembled servo motors

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A NEW family of locally-assembled servo motors will be unveiled by SEW-Eurodrive at this year's National Manufacturing Week.

The three-phase permanent-magnet CM servo series is now fully assembled in Australia, ensuring SEW-Eurodrive can provide fast turnaround on complete servo packages that are tailored to a specific application.

Operational since mid-March 2005, SEW-Eurodrive's new CM servo assembly facility is located in its Melbourne-based headquarters.

"The new CM servo facility permits us to provide a level of servo system supply, service and support previously unknown in Australia," said SEW-Eurodrive servo systems product manager Spiro Limberakis.

"We can now offer one week turnaround on servo systems. That's the complete servo system--servo drive, gearbox, servo controller and cables--a proven integrated solution, on the customer's site and ready to install."

The CM servo family is a compact and lightweight servo drive, based on the advanced rare earth magnetic materials and a cooling fin-free aluminium housing. Precision engineering ensures that the CM servo provides premium torque-to-weight ratios and positioning accuracy.

Offering a torque ratings range of 5 to 68Nm (which may be extended to 95Nm by application of an optional forced cooling fan) the CM series is presented in three distinct frame sizes. These three frame sizes will be available in Australia virtually off-the-shelf in speed ratings of 3000 and 4500rpm.

The CM servo series is provided with pre-terminated plug connector-type cables in a range of cable lengths, both for power and brake supply, and servo connections. Fitted with robust 'SM' plug connectors, the pre-terminated cables ensure speedy on-site connection installation. and servicing.

An extensive range of options is available with the CM servo. The servo series is provided with a robust resolver-type position encoder as standard, or may be fitted with a precision 'Hiperface' absolute encoder (either single or multi-turn) as an option.

A selection of high-performance electro-mechanical brakes are available, as are optional forced cooling fans, which increase the servo motor's static torque to 145 per cent of the standard value.

An important feature of the new CM series is its direct mounting to the SEW-Eurodrive family of gearboxes. Close mechanical coupling between gear unit and servo drive ensure that the complete assembly is very short and compact, and experiences reduced backlash.

The CM servo plus gearbox, coupled with the advanced SEW-Eurodrive MOVIDRIVE 'B' application inverter, provides a complete end-to-end servo solution for almost any precision positioning application.

The new CM servo series will be unveiled at SEW-Eurodrive's stand at National Manufacturing Week '05: AIEE pavilion, stand 4401, Melbourne Exhibition and Convention Centre, May 10 to 13, 2005.

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