Startup And Operation Of The Stage - PI A-62 Series User Manual

User Manual
A620D0001 Rev 1.2
30-July-2019
7.

Startup and Operation of the Stage

See the user's manual of the controller being used with the A-62x stage for instructions about startup and
operation.
Note that the servo tuning values may need to be adjusted if the payload mass or size changes. If PI was not
given user application information at the time of order, the servo was tuned with no payload mass.
Moving parts of the stage can cause crushing or shearing injuries. All personnel must remain clear
of any moving parts.
Collisions can damage the stage and the payload.
 Take care when operating the stage to ensure that no collisions are possible between the
stage, the load to be moved, and the environment in the motion range of the stage.
 Do not place any objects in areas where they can be caught by moving parts.
 Stop the motion immediately if a controller malfunction occurs.
Do not attempt to operate the stage with the shipping restraint installed.
The A-62x can develop high forces and accelerations. If the stage has been improperly or
incompletely installed, the stage, the payload, and the environment can be damaged during
operation.
The stage table should never be moved without the air supply turned on. Moving the stage table
with no air supply, causing sliding metal-to-metal contact, may damage the bearing surfaces.
The drive mechanism of the A-62x is not self-locking. The stage can therefore unintentionally move
in the following cases:

Switching off or restarting the controller

Switching off the servo mode for the axis
Unintentional displacement can damage the stage, the payload to be moved, and the environment.
 Only operate the A-62x with a horizontally aligned motion axis.
 Before switching off or rebooting the controller, take suitable measures to ensure that no
unintentional displacement of the stage table is possible.
Do not exceed the operating voltage range for which the A-62x is specified.
The optimum values of the servo-loop parameters in the controller depend on the application and
the payload mass/inertia. 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, size, or inertia
changes.
PI (Physik Instrumente) L.P.
16 Albert Street, Auburn, MA 01501
Tel: 508-832-3456 Fax: 508-832-0506
Email: air@pi-usa.us
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