PI P-587.6CD - Troubleshooting

8 Troubleshooting
P-587 Positioner PZ251E Version: 1.1.0 29
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.
33).
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
platform is warped

Mount the P-587 onto surfaces with the
following characteristics only:
− Flatness of at least 20 μm
− The thermal expansion properties are
similar to those of the P-587 (e.g.,
surface made of aluminum).
 Mount loads onto the P-587 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-587 (e.g.,
load made of aluminum).
The positioner
starts oscillating
or positions
inaccurately
Servo control parameters
incorrectly set because for
example, the load was
changed
1. Switch off the servo mode of the
corresponding motion axes immediately.
2. Check the settings of the servo control
parameters on the controller.
3. Adjust the servo control parameters on
the controller according to the load
change.
Open-loop operation near
the resonant frequency

In open-loop operation, operate the
positioner only with a frequency that is
below the resonant frequency.
If the problem with your system is not listed in the table above or cannot be solved as
described, contact our customer service department (p. 31).
8
Troubleshooting