S-shaped ramp active and override function, decelerations with acceleration setting (remedied from V2.0 onwards)
Remedied from:
ECS Posi&Shaft V2.0 onwards
Behaviour of the new version?
In the case of activated S-shaped ramps (C3600/x > 0), as with linear ramps, decelerations are now always performed with the set deceleration.
What happens?
In the case of S-shaped ramps, the deceleration demanded through the influence of the override function is performed with the acceleration setting value rather than the set deceleration.
When does the problem occur?
Whenever S-shaped ramps are activated (C3600/x > 0) and if the current speed needs to be reduced (deceleration) by the influence of the override function (AIN and/or PDO).
Which products/versions are affected ?
ECS Posi&Shaft <= V1.3
Diagnostics options ?
Use an oscilloscope to trace the speed curve while the override varies.
Short-term measures/recommendations?
None.
Evaluation:
Of limited practical relevance, as experience has shown that the values for acceleration and deceleration within a positioning profile are not set very differently.
