PI U--651 Series, User Manual

Page: 29 / 51

6 Starting and Operating
U­651 Rotation Stage MP136E Version: 1.3.0 25
NOTICE
Damage due to collisions!
Collisions can damage the U-651, the load to be moved, and the surroundings.

Make sure that no collisions are possible between the U-651, the load to be moved, and
the surroundings in the motion range of the U-651.

Do not place any objects in areas where they can be caught by moving parts.

Stop the motion immediately if a controller malfunction occurs.

If possible, adapt the travel range limits of your mechanical system in the software that
you use for commanding the motion.
NOTICE
Uncontrolled oscillation!
Your application can be damaged by uncontrolled oscillation of the U-651.
If you encounter noise during operation:

Immediately switch off the servo control system of the affected axes.

Check the settings of the servo control parameters.
NOTICE
Overheating during continuous operation!
The highest torque or holding force is reached at maximum motor power; however, the U-651
may overheat during continuous operation.

Pay attention to the recommended motor power depending on the duty cycle and the
ambient temperature (p. 40).
NOTICE
Damage or considerable wear due to high accelerations!
High accelerations can cause damage to or considerable wear on the mechanical system.

Stop the motion immediately if a controller malfunction occurs.

Determine the maximum velocity for your application.

Pay attention to the information in the "Motor Power" section (p. 38).
INFORMATION
Although the U-651 operates quietly in theory, noise levels of up to 50 dB (A) are possible
during operation. The ultrasonic drive of the U-651 can also generate higher noise levels at
frequencies between 100 and 500 kHz.
INFORMATION
The positive direction of motion of the U-651 is shown in the product view (p. 8).