L_TW2P_WinderTension: The correction value is limited by the influence - control via PI controller not possible (corrected from V3.22.0)

Corrected from:
Library: L_TW2P_TechModulesWindingTraversing as of V03.22.00
                      (Update via EASY Package Manager)

Response of the version:
The correction value variable of the tension controller is multiplicatively evaluated via the influence lrCtrlInfluenceScaled. This allows the influence to be set between 0 and 1.
 
What happens?
The correction value at the output of the PI controller is significantly lower than the expected value when the influence is specified with lrCtrlInfluenceScaled < 1.
 
Whe does the behaviour occur?
An influence lrCtrlInfluenceScaled < 1 is specified
The speed based tension control mode is active: eTensCtrlMode = L_TW2P_WinderTensionControlMode.SpeedBased
The process controller manipulated variable is incorrectly multiplied by lrCtrlInfluenceScaled ^2 instead of lrCtrlInfluenceScaled.
 
Which products are affected?
Library: L_TW2P_TechModulesWindingTraversing (as of V03.21.00).
 
Short-term measures:
Preset lrCtrlInfluenceScaled =1 and set the desired influence via the greeting: Parameters scPar.lrTensCtrlLimitPos and scPar.lrTensCtrlLimitNeg.
 
Evaluation/Recommendation:
The process controller does not work stably, with a typical influence < 1. The cause is difficult to discover.

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URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/202000228/1/
Metadaten
Taxonomy: Lib L_CM1P_ControlModules , Lib L_TB1P_TechnologyBasics , Lib L_TB2P_TechModulesBasic , Lib L_TF2P_TechModulesFollowingPositioning , Lib L_TP2P_TechModulesProcessFunctions , Lib L_TS2P_TechModulesSynchronizingCamming , Lib L_TW2P_TechModulesWindingTraversing , FAST Motion Modules V2
AKB-ID: 202000228
Last update: 2023/09/09
Category: Versions-Informationen

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