SEW-Eurodrive has launched the latest extension to its CMP family of servo motors. Now offering torque rating of 0.5 to 45Nm,
the extended CMP series is presented in six distinct frame sizes with speed ratings of 3000, 4500 and 6000rpm.The new CMP
models complement the existing CM and CMP servo series, and offer premium dynamics and accuracy in a light-weight, compact
form-factor, providing higher torque density than competing servo units.
The new higher-torque models of the extended CMP range can be provided with a choice of two brake torques, and two rotor inertias.
'These new models give manufacturers the choice between a high and a low motor inertia,' said SEW-Eurodrive Victorian Sales
and Product Manager, Darren Klonowski. 'We recommend a ten-to-one ratio between the motor inertia and the load inertia to
optimise stability and motor control. Having the choice of two rotor inertias for each model allows for optimal matching of
the servo to the manufacturing application—all from a single series of servo motors.”
The clever design of the CMP range has resulted in a low-weight compact unit, boasting high-torque density. Furthermore, the
entire CMP servo range possesses premium dynamic characteristics, which stem from its particularly low inherent mass-moment
of rotor inertia. In addition it offers a particularly high ‘four times rated torque’ overload capacity, and cogging levels
minimised to below two per cent. Whisper quiet, the CMP servos retain emitted sound levels to between 55 and 75dBA at all
speeds.
The extended CMP servo series is provided with an industry-standard round ‘canon’ plug connectors (both for power, and resolver/encoder
connections) to increase equipment compatibility and to ensure speedy on-site installation and servicing when combined with
pre-manufactured cable assemblies.
An extensive range of options is available with the CMP servo. The standard robust resolver can be upgraded by a precision
‘Hiperface’ absolute encoder, and the standard connector can be replaced on request with a terminal box. Further options
include a choice of forced-cooling fans, and a square flange alternative to allow for direct machine mounting.
