Calibration Using Auto Tune; Correct For Over Travel - GE Masoneilan SVI II ESD Installation And Maintenance Manual

Calibration using Auto Tune

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 and
strokes the valve in large and small steps to set PID parameters for best positioning
response.
When auto TUNE proceeds, numerical messages are displayed, indicating the procedure
is working.
2. When auto TUNE is complete, TUNE appears.
3. Press + repeatedly until
4. Press * to return to SETUP menu and
the 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 Travel

On some valves full travel is larger than nominal valve travel and it may be desirable to have
the reported 100% position corresponding to nominal travel, rather than the full stroke. The
STOP OP option allows you to perform this correction. Use this procedure if a correction has to
be 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.
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DO NOT perform STOPS while the valve is controlling the process.
WARNING
Valve must be isolated from the process before starting
calibration. Calibration procedure strokes the valve over it's full
range.
DO NOT perform AUTO TUNE while the valve is controlling the
process.

SETUP appears.
While Calibration and Configuration are in progress the valve
WARNING
moves. Keep hands clear. Isolate the valve from the process.

CALIB appears. The valve moves to the value set by
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