Technical Specifications

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Step 4 - Autotune
The SVI II ESD has a built-in positioning Autotune feature. When setting up the PST controller
on a valve, this feature automatically computes the optimal parameters for the positioning
algorithm. This features does not require valve specific parameters in order to complete
successfully. The patented algorithm analyzes the dynamic behavior of the valve assembly,
and determines values for the tuning algorithm that are optimal for tight and accurate
position control.
The Autotune feature can be launched using the local pushbuttons, a handheld
communicator loaded with the device driver (DD), a control system loaded with the DD or
ESDVue software.
To autotune the SVI II ESD with the Setup Wizard:
 Click the Autotune checkbox (Figure 118).
Figure 118 Enabling Autotune
NOTE The changes made to autotune will not take place until you click
Apply. Do not click Apply until after you have made all your Setup
Wizard selections.