Device for detecting step-asynchronism and blocking of stepper- or synchronous-motor

The device has an arrangement for detecting at least one measurement value. It also has an analysis unit in which the measured value is compared with a reference value. When the reference value is exceeded a fault state is output. A voltage measurement value of a switched off motor cable forms the m...

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Bibliographische Detailangaben
1. Verfasser:	BIERBAUM, GERD., 70329 STUTTGART, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	The device has an arrangement for detecting at least one measurement value. It also has an analysis unit in which the measured value is compared with a reference value. When the reference value is exceeded a fault state is output. A voltage measurement value of a switched off motor cable forms the measured value. Preferably the voltage value is determined in such a time period in which the terminal voltage of the same motor cable is not present. The time interval corresponds to the pulse duration.