Water pump variable frequency and power frequency control circuit
The utility model discloses a water pump variable frequency and power frequency control circuit. The control circuit comprises a variable frequency control module, a power frequency control module, a circulating pump module, a transformer module and a PLC module. The variable frequency control modul...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a water pump variable frequency and power frequency control circuit. The control circuit comprises a variable frequency control module, a power frequency control module, a circulating pump module, a transformer module and a PLC module. The variable frequency control module comprises a first frequency converter, a second frequency converter and a frequency converter control contactor. The power frequency control module comprises a power frequency control cabinet and three power frequency control contactors. The circulating pump module comprises a first circulating pump, a second circulating pump and a third circulating pump. According to the technical scheme, free control over any one or two of three frequency converters is achieved through the two frequency converters, so that the same working frequency of the circulating pumps can be well ensured, and working efficiency of the circulating pumps is greatly improved. In addition, the circulating pumps can work at different frequency |
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