MicroMaster 6SE92 - ECT Sales & Service

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Principles of OperationMICROMASTERMICROMASTER VectorMIDIMASTER Vector2.1.9 MICROMASTER and MICRO/MIDIMASTER Vector (in V/f mode)Open loop frequency control for single-motor and multi-motor drives with induction motors, without any high demands regardingdynamic performance. e.g. pumps and fans, simple traversing drives.ConverterU dV/f charactersticU d- CorrectionUU*U stRampGeneratorfGatingunitn*fo/c tripH/WcurrenttripInom (P083)CurrentdetectionIM2.1.10 MICRO/MIDIMASTER Vector (in FCC mode)U dU d CorrectionV/f characteristicUfU m U*_ +U stRampGeneratorGatingunitn*++f-+Effective atf > f sCurrentlimitingcontrollerSlipcompensationFCC+_CurrentdetectionIEffective at f < f sI istMV/f control without speed detection2/4 Siemens DA 64 – 1998/99 (04/99)
MICROMASTERMICROMASTER VectorMIDIMASTER VectorPrinciples of Operation2.1.11 MICRO/MIDIMASTER Vector (Sensorless Vector Control mode)Preferably used for single-motor drives with induction motors, from low to high demands regarding dynamic performance, at speedsetting ranges of up to 1:10. Suitable for most industrial applications such as extruders, packaging machines, industrial washingmachines, lifts and hoists.EMF computerfor pre-controlConverterI Start *I - Controller++n*RampGeneratordn*/dt+-++n-controllerMAcc.I *M*M*↓IW*IW*IW-controller++U*CoordtransformerUd-Corr-ectionUStGatingunitf < f s+ff > f s+Effective at f > f sLoadControlf+Iw istIµ istMotor Modelwith vectortransformationUI+f Slipn calculatedM2.1.12 Torque and Speed ResponseSiemens DA 64 – 1998/99 (04/99) 2/5
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Standard ApplicationsMICROMASTERMIC
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MICROMASTERMICROMASTER VectorMIDIMA
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Communications/InterfacesMICROMASTE
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Inverter Selection and Ordering Dat
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COMBIMASTER & MICROMASTER Integrate
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AppendixMICROMASTERMICROMASTER Vect
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MicroMaster 6SE92 - ECT Sales & Service

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