Festo EPCO 16 Notice D'utilisation page 25

EPCO
Note
Block-shaped acceleration profiles (without jolt limitation) cause high peaks in the
motive force that can lead to an overloading of the drive. In addition, positions outside
the permissible range may occur as a result of overswing effects. A jolt-limited accelera-
tion specification reduces vibrations in the entire system and reduces stress in the
mechanical system.
• Check which closed-loop controller settings can be adapted (e.g. jerk limitation,
smoothing of the acceleration profile).
Check travel
Ascertaining the direction of
movement of the piston rod
Tab. 5 Definitions
1. Start a Check travel and limit it to low dynamic response.
Despite identical control, motors of the same design can turn in the opposite direction due to differ-
ent wiring.
2. Start a Homing run up to the reference switch in accordance with the controller description and
limit it to low dynamic response.
Providing the permissible impact energy is not exceeded, the homing run may be executed directly
against the end position.
Maximum impact energy (= ½ mass x speed
– EPCO-16 :
– EPCO-25 :
– EPCO-40 :
3. Start a Test run and limit it to low dynamic response.
4. Check whether the EPCO fulfils the following requirements:
– The piston rod must move through the complete intended positioning cycle.
– The piston rod must stop as soon as it reaches a limit switch.
5. If the proximity sensors fail to respond:
( 11 Troubleshooting and
Festo – EPCO-Z6 – 1407b English
Homing run
Comparing the real situation
with the image in the controller
2
-3
max. 0.1 x 10 J
-3
max. 0.2 x 10 J
-3
max. 0.4 x 10 J
Proximity sensor operating instructions).
Test run
Checking the overall behaviour
):
25