Valve stroke
[%]
Fig. 6.14: Effect of limiting the opening speed for a jump in the set-point value
X.contrl
Parameters setting for the Top Control Continuous
Deadband of the Top Control Continuous
Enter the deadband in % ( 0 = automatic)
This function ensures that the Top Control Continuous acts only then a selected control difference is measured (Fig. 6.14).
This function protects the servovalve and pneumatic actuator by controlling the start-up frequency.
The setting is optimized automatically with X.TUNE.
Parameter of the position controller
Proportional factor for the Top Control Continuous (to close the valve)
Proportional factor for the Top Control Continuous (to open the valve)
End of the parametering of the Top Control Continuous. Return to
Top Control Continuous
Set-point
value
Actual
value
T.OPN
Factory setting: 1 %
t
131