dELY (Delay) - Ramp functionFigure 21:
n order to guarantee leak-tight closing of the valve, the valve is completely de-energised with input signals below
the set limit (0.1 to 5.0 % of the set standard signal) when the zero point shutdown is active.
In addition to its control function, the valve can also take on the function of a cut-off valve.
Cut (Cut off) - Zero point cut offFigure 22:
With a set value of 0.0 %, the zero point cut-off is deactivated. Even at an input signal of 0 %, the valve •
no longer reliably shuts off the flow.
The valve flow control restarts with a hysteresis of 0.5 %.•
The reactivation of the current controls starts as soon as the input signal is set to a value 0.5 % above •
the defined threshold value; i. e. there is a hysteresis of 0.5 % for the activation and deactivation of the
cut off function
The range of the input signal lying below the set threshold is no longer available for the current control •
and fluidic flow control
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