Black & Decker PI9000 Manual de usuario Pagina 33

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Service center of POWTRAN technology company
My future ,drive and control
17.2.PID control for constant pressure water supply
-electrical diagram ( 0-20mA signal feedback )
negative action, when Δ0 is
positive, frequency rises and
when Δ0 is negative,
frequency falls. For constant
Pressure water supply.
Pressure
transmitter
0-20ma analog
output signal
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