Festo DNCKE 40 Serie Notice D'utilisation page 37

DNCKE/KEC
6.3 Test run
• Comply with limits for all loads.
For setting the speed and pneumatic cushioning:
1. First, screw in the screws of the upstream one-
way flow control valves aA and the pneumatic
cushioning aB on the DNCKE, then loosen by
about one turn.
2. Pressurise the complete system slowly, e.g. with the soft-start valve type HEL.
3. Pressurise the cylinders simultaneously at both supply ports (1 è Fig. 1, only for DNCKE).
This prevents movement in the direction of the unpressurised cylinder chamber.
4. Pressurise the clamping unit at the supply port (2 è Fig. 1) with a minimum of 3.8 bar.
This might be enough for the piston rod to move slowly into the advanced end position.
5. Start a test run at a low cycle rate and low impact speed.
6. Repeat the test run increasing speed incrementally until reaching operating speed.
If set correctly, the payload (e.g. the moved machine part) should reach the end position without
stopping hard.
7. In the test run, check if the following equipment settings need to be modified:
– speed of the payload
– pneumatic cushioning
– clamping force
After completing the required adjustments:
8. End the test run.
6.4 Clamping force test
WARNING
Unexpected movement of components.
Injury due to impacts or pinching.
If the clamping unit's holding force is no longer sufficient, moving parts of the pneumat­
ic components might move in an uncontrolled way.
Uncontrolled movements of the connected actuators can cause personal injury or ma­
terial damage.
• The clamping force is checked in the resting position.
The specified test examples correspond to cases of application with the maximum
amount of stress. Deviating applications (slanted mounting position) cannot be repres­
ented. It may be necessary to make calculations for a specific application and carry out
a specific test for that.
Festo – DNCKE/KEC – 1606a English
aA
aB
Fig. 20
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