© 2016 General Electric Company. All rights reserved.92 | =GE Oil & GasCalibration using Auto TuneWARNING DO NOT perform STOPS while the valve is controlling the process.Valve must be isolated from the process before startingcalibration. Calibration procedure strokes the valve over it’s fullrange.DO NOT perform AUTO TUNE while the valve is controlling theprocess.To auto tune the SVI II ESD using the pushbutton display:1. Press * to begin Auto TUNE procedure and TUNE appears. This takes 3 to 10 minutes andstrokes the valve in large and small steps to set PID parameters for best positioningresponse.When auto TUNE proceeds, numerical messages are displayed, indicating the procedureis working.2. When auto TUNE is complete, TUNE appears.3. Press + repeatedly until SETUP appears.4. Press * to return to SETUP menu andCALIB appears. The valve moves to the value set bythe current calibrator.5. Stroke the valve through its range to verify that movement is as needed.6. Press + to return to SETUP.7. Press + to return to NORMAL mode.Correct for Over TravelWARNING While Calibration and Configuration are in progress the valvemoves. Keep hands clear. Isolate the valve from the process.On some valves full travel is larger than nominal valve travel and it may be desirable to havethe reported 100% position corresponding to nominal travel, rather than the full stroke. TheSTOP OP option allows you to perform this correction. Use this procedure if a correction has tobe made.1. From CALIB press * to display Stops.2. Press + to display STOP OP.3. Press * to move valve to the 100% position.4. Using the + and - buttons, position the valve to the nominal full open position.5. Press * to accept this position as the new 100% position.
