VVP10 HART
HART
®
VALVE POSITIONER
INSTALLATION, OPERATION, CONFIGURATION AND MAINTENANCE MANUAL
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30
Auto Tuning
It performs the automatic tuning procedure for PID control, calculating the optimized values of Proportional (Kp),
Integral (Tr) and Derivative (Td) parameters through data collected in repeated oscillations of the system (according
to the applied pressure). Figure 3.14 shows procedure steps.
Figure 3.14 – Diagram for PID control auto tuning.
Full Auto Calibration
It performs the automatic position sensor calibration and PID control tuning procedures sequentially. For details on
each of these procedures, see the above items. Figure 3.15 shows procedure steps.
Figure 3.15 – Diagram for full calibration.
Manual Travel Calibration
It performs the manual procedure for adjusting the 0% and 100% position sensor references. Figure 3.16 shows
procedure steps.
Figure 3.16 – Diagram for position manual calibration.
WARNING
This procedure depends on the user's confirmation regarding the positioning of the system at the ends of
the valve, ensuring that the calibration is performed successfully.
In the case of local adjustment, the display
will indicate "wait" so user wait for valve settling, and then actuate the magnetic key in the Span (S) hole.
