ABB ACS880 Supplement Manual
Also see for ACS880 Series: Quick start up guideQuick start guideUser manualElectrical planning instructionsSupplement
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Contents
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22 Decanter program featuresDecanter process load compensationThe load compensation of Scroll drive enables compensating the process load variationsof a Decanter. This means that, it is possible to influence the quality of the end productautomatically through a differential speed correction. See the below chain diagram andparameters 78.17 Load compensation gain and 78.18 Load compensation int time. Torque window controlThe operating principle of the Torque window control is based on the window control of theactual torque. The control is activated when the actual torque of the scroll drive exceedsthe given reference.Differential speed correction can be adjusted with separate integrator, gain and scalingfactors of the Torque window control using following parameters:78.12 Torque window sel78.13 Torque ref select TORQUEWINDOWCONTROLPI78.14 Torque referenceValue78.15 Torque gainValue78.16 Torque integration timeValueValue3.05 Fieldbus A ref 1Value12.22 Scaled AI2Value12.12 Scaled AI178.13 Torque window ref sel Selection>078.12 Torque window sel Selection>Value78.19 Torque to delta speed+9.21 Delta speed torque windowLOADCOMPENSATIONCONTROLPIValue78.17 Load compensation gainValue78.18 Load compensation int timeValue1.10 Motor torque 9.23 Load compensationDecanter control torque window and load compensation01ENAND0a>babTorque to speed comp |
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