PI P-611 Series, Руководство пользователя

Страница: 35 / 59

8 Troubleshooting
P­611 Positioners PZ253E Version: 1.2.0 31
Problem Possible causes Solution
No or limited
motion
Cable not connected
correctly

Check the cable connections.
Excessive load

Do
not
exceed the maximum permissible
stress and load capacities according to
the specifications (p. 35).
Zero shift of the sensor for
the following reasons:

Load in direction of
motion

Ambient/operating
temperature of the
positioner is far above
or below the calibration
temperature (21 °C to
24 °C)

Adjust the zero-point of the sensor (refer
to the controller manual).
Reduced accuracy The base body or the
motion platform is warped

Mount the P-611 onto surfaces with the
following characteristics only:
− Flatness of at least 20 μm
−
The thermal expansion properties are
similar to those of the P-611 (e.g.,
surfaces made of aluminum).

Mount loads onto the P-611 with the
following characteristics only:
− The contact surface of the load has a
flatness of at least 20 μm.
−
The thermal expansion properties are
similar to those of the P-611 (e.g.,
loads made of aluminum).
P-611 or controller has
been replaced
It is necessary to recalibrate the axis
displacement after replacing the P-611 or
controller.

Recalibrate the axis displacement (see
controller manual) or contact our
customer service department (p. 33).
8 Troubleshooting