ADS Environmental Services FlowShark Pulse QR 775004 A1 - Manual (Page 133)

Parameter Settings 8-43
Figure 8-61 Setting the minimum duration for the control impulse
Slide valve run time/shifter time
Use this parameter to monitor spindle breaks, slide valve gate breaks, gear defects,
and power failures involving the regulating unit or other system malfunctions that
may indicate that the regulating unit is not moving, even when the unit is generating
control signals.
Figure 8-62 Setting the slide valve run time
The control unit will generate an error message if it does not reach
the end switch CLOSED position after the slide run time has
expired.
Guideline:
Slide run time = time elapsed between open and closed condition of slide valve
during permanent operation • 1.2 ......2.0. (The longer the slide run time, the lower the
factor.)
The slide run time produces an effect similar to the P-factor and
must be set.
Quick-close function
Use the quick-close function when certain conditions, such as large diameters, long
slide valve run times, and long dead times, exist at the measurement location. During
sudden rainfall events, this function will partially close the open slide valve
independent of the calculated regulating time. During normal operations, this
function will be executed without any interruption to runtime.