Festo Линейный привод ELGL-LAS - Manual (Page 67)

66 FESTO ELGL-en 0904NH
Fault Possible cause Remedy
Linear axis not responding Temperature monitoring active Observe permitted loading values
(take into account temperature
fluctuations during course of
year)
Incorrect parametrisation Check parameters in the control-
ler
Linear axis is behind the end
position / homing fault Manually push the linear axis out
of the end position (air on, power
off!)
Not enabled Apply 24 V to enable input
Malfunction in the commutation
point search Unfavourable resonance for the
selected
commutation angle
process
Change commutation angle
search process in FCT or change
parametrisation.
Uneven force development in
relation to the direction of move-
ment The commutation angle is not
correct Change commutation angle
search process in FCT or change
parametrisation
Uncontrolled movements Defects on the measuring head
and/or measuring tape, e.g. due
to mechanical, electrical or mag-
netic damage Check the distance of the measur-
ing head to the measuring tape
(limit value <0.8 mm over the
entire area of movement).
If this is otherwise the case, al-
ways consult the Festo service
department
Abrasive marks on the stator/
increased friction The function of the air cushion
bearing is limited in that the air
pressure is too low Increase the air pressure to a
min. 4 bar
Distortion in stator or the slide
during operation, e.g. due to the
load being too great or thermal
deformation Correct alignment and stress-fee
assembly of stator and effective
load; check the flatness using
straight-edge
Function of the air cushion bear-
ing is limited due to blocked noz-
zles, e.g. oily or otherwise con-
taminated compressed air Please consult the Festo service
department for having the bear-
ing nozzles replaced.
Make sure the compressed air is
filtered and oil-free by using 5 µm
filters
Note
Please also check the error messages and warnings from the controller and
parametrisation software in the event of malfunctions.
Should you still need help, then please don't hesitate to contact the Festo
service department and please don't forget to have the device details
(type/serial number), as well as the configuration data, project files etc. at
hand along with an (as far as possible) exact description of the error.