Accessories; Troubleshooting - Festo DDPC Notice D'utilisation

DDPC
Replacing the sensor:
1. Unscrew the fastening screws.
2. Replace the sensor.
Note here the mechanical coding on the sensor housing and make sure that the seal is seated cor­
rectly.
3. Screw the fastening screws in again.
The tightening torque is 0.6 Nm.
Recommendation:
• Return the product to our repair service for overhaul.
This way the required fine tuning and tests will be taken into special consideration.
• Information about spare parts and aids can be found at: www.festo.com/spareparts
10

Accessories

Note
• Please select the accessories you need from our catalogue
(è www.festo.com/catalogue).
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Troubleshooting

Malfunction Possible cause
Malfunction in Strong external magnetic fields
position sensing
Environmental influences outside the
specifications
Magnetic strip in the piston rod
polarized due to strong magnetic fields
Mounting fault when sensor is replaced Check the correct position of the
In combination See detailed description of the relevant positioning controller
with positioning
controllers
Hard impact at Mass too large
the end positions
Excessive speed
Insufficient cushioning
Tab. 5
24
Remedy
Eliminate external magnetic fields
(e. g. by means of screening plates)
Observe the specifications
Send to Festo with a description of the
fault
sensor coding nose in the cylinder
Reduce accelerated work mass
Reduce speed. Brake additionally with
work valves
Use external cushioning elements
Festo – DDPC – 1505a English