Perform Auto Calibration 3
All parameters necessary to operate valve are set except zero and end point. This function is
used to re-execute auto calibration without changing the zero and end point after adjusting them
manually.
1. Power Up valve and ensure compressed air 100 PSI is at Supply Line
2. During auto calibration valve will open and close so ensure that you have Liquid nitrogen off
3. Push <ENTER> for 6 seconds in RUN mode and AUTO CAL message should appear.
4. Push <ENTER> and then AUTO1 mode is displayed. Use Up/Down keys to change to
AUTO3
5. Push <ENTER> again at AUTO3 mode and Auto 3 calibration is started.
6. When Auto 3 calibration is done, ‘COMPLETE’ message appears on the LCD. After 4
seconds the procedure returns to RUN mode and the valve stroke by current input signal is
displayed as a percentage.
BIAS Calibration
BIAS is the standard value of motor control in the positioner. It is affected by supply
pressure, KP and other values. BIAS should be re-adjusted if supply pressure or KP is
changed, otherwise accuracy will decrease.
1. Press and hold <ENTER> for 6 seconds in RUN mode and AUTO CAL message
should appear.
2. Scroll with <DOWN> button until BIAS mode is displayed.
3. Push <ENTER> and BIAS calibration is started.
4. When BIAS calibration is done, ‘COMPLETE” message appears on the LCD. After 4
seconds the procedure is returned to RUN mode.
Authorization and Copyright of this document is
controlled by Hanse Environmental Inc.
49
Содержание VTC Series
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