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  1. gerffs

    PID output staying High when SP = 0

    We have a Clean Steam Reducing Station for reducing steam pressure from 60lb to 45lb and 30lb. It is being controlled by an Allen Bradley SLC 5/05 and a Panelview 1000. The problem is that when the Setpoint (SP) is changed to 0 and the Process Variable (PV) is 0, the output for the control...

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