Troubleshooting - Festo HGDS Série Notice D'utilisation

HGDS−...
13

Troubleshooting

Fault
Unexpected swivelling and
gripping sequence
Proximity sensor not
sensing
Hard impact at the end
positions positions
The shock absorber can
puncture as the result of an
extended service life
Shock absorber reset times
increasing in length
Gripper jaws open during
swivel motion
Fig. 21
Festo HGDS−... 0409a English
Possible cause
Pipe connection error
Ferritic objects in the
immediate vicinity
(mounting attachments)
Excessive load
Excessive speed
Rubber buffer worn/
shock absorber defective
Viscosity of the shock
absorber oil decreases as a
result of frictional heat
Oil leakage or increased
friction
Effective load exceeded
Operating pressure at
gripper component too low
Remedy
Check pipe connections
Use non−ferritic materials
or a different proximity
sensor type (SMT−10F−...)
Select a lighter load
Greater throttling of swivel
motion
Replace as described in the
section 'Operation'
Reduce the swivelling
frequency
Replace as described in the
section 'Operation'
Check and if necessary
reduce effective load
Check operating pressure
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