20
YT-3400/3450 series
6.3.1
Auto Calibration (AUTO CAL)
Auto Calibration (AUTO CAL) automatically calibrates the positioner. “AUTO CAL” process
takes about 2~3 minutes, and the duration of the process varies upon the size of the actuator.
There are 3 types of AUTO CAL.
Zero Point
End Point
KP, KI, KD
RA / DA
AUTO 1
O
O
X
X
AUTO 2
O
O
O
O
AUTO 3
X
X
O
O
It is recommend to perform AUTO2 calibration for initial positioner setting.
6.3.1.1 AUTO1 Calibration (AUTO1)
AUTO1 changes zero and end points; however, KP, KI, KD will not be adjusted. It is
recommended to perform AUTO1 when the positioner has been set by the valve
manufacturer already, and the field user wants to re-calibrate the positioner.
6.3.1.2 AUTO2 Calibration (AUTO2)
AUTO2 changes all of the parameters. It is recommended to perform AUTO2 when the
positioner has been installed on the valve for the first time.
⇨
<ENTER>
6 seconds
⇨
<ENTER>
⇨
<ENTER>
⇨
<ENTER>
6 seconds
⇨
<ENTER>
⇨
<DOWN>
⇨
<ENTER>
