Installation Guidelines Piezo LEGS
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Installation Guidelines for Piezo LEGS ® The Piezo LEGS is a high precision motor. A few simple instructions must be followed in order to get the best performance and lifetime. If the motor is installed poorly both performance as well as life time is severely affected. Piezo LEGS® Linear Twin 20N Drive legs - piezo actuators Drive rod Piezo LEGS® Linear 6N PRELOAD Mechanical adapter with sheet metal extender The Piezo LEGS is a direct drive motor. Proper friction coupling between drive legs and drive rod is essential for optimum performance. When properly installed the motor can position down to the nanometer range without backlash. Mechanical Notes • The motor drive rod must not be subjected to non-axial force – even small loads or torques on the end of the drive rod may cause loss of proper friction contact between drive legs and drive rod. The motor function can be impaired and the motor can be damaged. ✔YES ✘NO ✘NO F F M POOR FRICTION CONTACT POOR FRICTION CONTACT

Installation Guidelines for Piezo LEGS ® • Always mount using the intended mounting holes. Do not use the non-threaded holes in motor housing for fastening the motor. Do not clamp the motor. ✔YES ✘NO 4 mounting screws ✘NO ✔YES 2 mounting screws • Always mount using a mechanical adapter with flexible sheet metal extender so that transverse loads and torques on the drive rod are minimized. Never directly connect the drive rod and moving part in your application (for example when connecting the motor to a linear bearing). Mounting directly will introduce loads large enough for the drive rod to...

Installation Guidelines for Piezo LEGS ® • Always align the drive rod so that there are no loads transverse the drive rod axis of motion. Even small angular misalignment may impair motor function. ✔YES ✘NO F • Misalignments in the drive plane are less critical but should be avoided. If the drive rod is aligned poorly there is risk for contact between drive rod and motor housing. Contact may impair function. ✔YES ✘NO • If a mechanical adapter with metal sheet extender cannot be used because of space limitations, we suggest the motor work against a spring loaded linear bearing. Small non...

Installation Guidelines for Piezo LEGS • The drive rod must not be removed from the motor, and it must not be moved to a position where contact with any drive leg is lost. The drive legs can be severely damaged if they are not preloaded while motor is running. Repositioning a drive rod that has come out of place may crack the ceramic drive legs. Contact PiezoMotor for instructions on how to reposition the drive rod. Electrical Notes • The maximum voltage of +48 V relative to GND must never be exceeded. Overvoltage or reverse polarities can damage the motor. • Be careful not to overheat...