Product Introduction
Yaskawa/Yaskawa W1000 inverter, dedicated to water pumps, adopts energy-saving control technology, and can operate efficiently regardless of induction motor or synchronous motor. The switching method (Swing PWM) is used to reduce the noise generated
Variable speed pump fixing
1 pump can be operated at adjustable speed, and the rest of the pumps can be operated according to the data output of the inverter for power frequency ON and OFF.
And the role of constant pressure control for pipelines. The PI function of the inverter that controls the variable speed pump maintains the continuity of the pressure difference in the pipeline.
**Up to 1 adjustable speed pump and 3 commercial power constant speed pumps can be operated. If there is a DO-A3 optional card: ** can run up to 1 variable speed pump, 11 commercial power constant speed pumps.
Variable speed pump cycle switching mode 1
Carry out adjustable speed operation for a certain pump, and when the working pressure of the pipeline is insufficient, switch to a commercial power supply, and carry out variable speed control for the next pump to realize the constant pressure operation of the pipeline. Compared with the fixed pump mode, the variable speed control of the pump with adjustable speed operation will be carried out to realize the constant pressure control function of the pipeline. Relative to the fixed mode of the pump, the variable speed controlled pump can be cyclically switched for operation. The continuity of the differential pressure in the line is maintained by the PI function of the inverter that controls the variable speed pump. To apply this method, the DO-A3 option is required. **Up to 5 pumps can be operated with variable speed cycle switching.
Variable speed pump cycle switching mode 2
Adjustable speed control is carried out on a certain pump, and when the working pressure of the pipeline is insufficient, it is switched to a commercial power supply, and the variable speed control of the next pump is carried out to realize the constant pressure operation of the pipeline. In contrast to the fixed pump method, the pump with adjustable speed operation will be cyclically switched. The PI function of the inverter that controls the variable speed pump maintains a constant pressure difference in the line. **Up to 3 pumps can be operated with variable speed cycle switching. If there is a DO-A3 optional card: ** Up to 11 pumps with variable speed cycle switching can be run.
features
Depending on the pressure or flow rate, operation can be realized, and at the same time, the function of circulating pump cutting can prevent uneven operation time between pumps and achieve stable operation.
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