As Printed in Machine Design
Servo Control Simplified
Until recently setting up a brushless servo system involved selecting a motor, drive, controller and figuring out the mounting, cabling, connecting, tuning and programming. The whole selection and programming process seemed to be something you needed an advanced degree to accomplish.
Advances in electronics are now allowing integration of the motion controller and driver into the servomotor case. This assures proper sizing of the motor/controller and leaves only the application questions to answer.
Building the controller electronics into the motor case offers additional advantages such as reduced footprint, eliminated cabling, plug-in simplicity, ease of troubleshooting and reduced cost.
The 65mm CI model marketed by Dynetic Systems of Elk River, Minnesota (www.dynetic.com), is a brushless DC servomotor (BLDC) with integrated motion controller, driver and Hall sensors for rotor-position recognition. It provides a continuous output power of up to 130W and is available with a right angle or planetary gearbox allowing you to achieve peak torques (at the output shaft) of more than 7Nm.
This servomotor has a discrete I/O-interface and a CAN-Bus interface. The communication protocol is according to the CAN-Open standard.
The combination of digital I/O�s with a CAN-Bus interface allows the operation of the servomotor in various operating modes. The following operating modes are possible:
Example of a stored profile in an integrated controller servomotor:Reprinted from Machine Design