Masoneilan SVI II AP Installation and Maintenance ... - GE Energy

Adjust Input Signal Range
Configuration and Calibration
Adjust Input Signal Range
SIG LO displays the input signal that corresponds to the full closed (ATO) or full open
(ATC) position of the valve.
1. If the displayed value is:
Correct, press + to advance to the next item.
Not correct, press * to display value of SIG LO.
2. Use + and – buttons to change the value.
3. Press * to return to menu and move to next item. SIG LO must be between 3.8 and
14.0 mA.
SIG HI displays the input signal that corresponds to the full open, ATO, or full
closed, ATC position.
4. If the displayed value is:
Correct, press + to advance to the next item.
Not correct, press * to display value of SIG HI.
5. Use + and – buttons to change the value.
6. Press * to return to menu and move to next item. SIG HI must be between 10.0 and
20.2 mA. SIG HI must be larger than SIG LO by at least 5 mA.
Calibration of the positioner is now complete.
7. At -› MAN, press * to return to the MANUAL mode. MAN POS appears.
NOTE
SIG HI and SIG LO allow adjustment of the input current
range that corresponds to full valve travel. Normally they are
set to 4 and 20 mA. Adjustment is normally required only for
split range applications and provides flexibility for unusual
applications. A separate ValVue calibration procedure
enables adjustment of the current sensing circuit to a
precision current reference standard.
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