Техническая Спецификация для Siemens SPS starter kit 6ED1057-3BA00-0AA8 12 Vdc, 24 Vdc 6ED1057-3BA00-0AA8
Модели
6ED1057-3BA00-0AA8
Tutorial
3.5 Practical example
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Operating Instructions, 06/2014
3.5.3
Layout of the solution
The pump and a solenoid valve are controlled by a pressure switch and three float switches,
which are installed in the service water reservoir. The pump must be switched on if the
pressure in the reservoir drops below minimum. When the operating pressure is reached, the
pump is switched off again after a tracking time of a few seconds. The tracking time prevents
pump oscillation if water is tapped over an extended period.