Automatic cleaning method for a pump system comprising a softstarter arrangement

The present invention provides an automatic cleaning method for a pump system comprising a softstarter arrangement. According to the invention, a method for controlling circuitry (14) of a softstarter arrangement (11) to operate an electric motor (12) for driving a pump is provided, wherein the soft...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GRONQVIST AASA, VISHNU ARAVINDH, EK MAGNUS, GENTZELL TOBIAS, KLING SOREN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATION HEATING LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS NON-POSITIVE DISPLACEMENT PUMPS PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REGULATING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides an automatic cleaning method for a pump system comprising a softstarter arrangement. According to the invention, a method for controlling circuitry (14) of a softstarter arrangement (11) to operate an electric motor (12) for driving a pump is provided, wherein the softstarter circuitry electrically connects the motor to electric mains. The method comprises: (i) controlling (32) the circuitry of the softstarter arrangement to accelerate the motor up to full speed in a forward direction; (ii) controlling (33) the circuitry of the softstarter arrangement to decelerate the motor when the motor has run at full speed in the forward direction for a first period of time; (iii) controlling (34) the circuitry of the softstarter arrangement to accelerate the motor up a specified speed in a reverse direction; (iv) controlling (35) the circuitry of the softstarter arrangement to decelerate the motor when the motor has run at the specified speed in the reverse direction for a second period of time; and (v) repeating the steps (i)-(iv) one or more times.