Which products are affected?
ESP-SP-POS ― Software Package Positioner V3.1
What happens?
On the combination of the OverChange and jerk reduction functions, the requirements for limiting the jerk are not taken into account; the profiles are processed linearly.
When does the problem occur?
On the usage of the OverChange function, the linked profiles cannot be processed using jerk reduction. The entry for the jerk time for the related profiles is not taken into account by the profile generator.
Possible diagnostics?
Whenever OverChange profiles are used, jerk reduction is deactivated.
Short-term measures/recommendations?
None.
OverChange profiles can only be processed using linear velocity ramps. As an alternative the profile linking function can also be used by switching to a new profile as a function of position. In this case it is also possible to use S-ramps.
Evaluation:
Using the OverChange function the machine component reaches the final velocity entered exactly at the target position for the profile. For many applications the increment-exact attainment of the final velocity during profile linking is not necessary. In this case the position-dependent switching of the profiles or Override can be used.
If the OverChange function must be used, the profiles can only be processed with linear velocity ramps. In some circumstance it may not be possible to observe the maximum permissible jerk as a machine parameter.
