User Manual
A311D0002 Rev 2.0
11-Nov-2021
Page 19 of 26
PI (Physik Instrumente) L.P.
16 Albert Street, Auburn, MA 01501
Tel: 508-832-3456 Fax: 508-832-0506
Email: [email protected]
The optimum values of the servo-loop parameters in the controller depend on the application and
the payload mass. Unsuitable servo-control parameter settings of the controller can cause the
control loop to become unstable and for the stage to vibrate. Oscillations can damage the stage
and/or the load affixed to it.
➢
If the stage is oscillating or exhibits unusual operating noise, immediately switch off the servo
mode for the axis on the controller or switch off the controller.
➢
Only switch on the servo mode for the axis on the controller after you have modified the servo-
control parameter settings; see the manual of the controller.
➢
Note that the servo tuning values may need to be adjusted if the payload mass or size
changes.
8.
Maintenance
Other than basic cleaning, the A-311 series stage is maintenance-free.
8.1. Cleaning the Stage
To clean the stage bearing surfaces, use isopropanol and a clean, lint-free cloth or wipe. Apply the cleaning
agent to the cloth and wipe down all of the air bearing surfaces and the exposed encoder scales. When cleaning
the air bearing it is recommended to leave the air supply turned on to help blow any particles out of the bearing
and prevent particles from entering the nozzles. Be especially careful of fingerprints on the bearing surfaces as
they attract dust and may tarnish the bearing finish.
Do not use cleaning agents other than isopropanol. Agents such as acetone or other detergents
can damage certain parts of the stage.
