Smart Positioner
YT-3100
Product Manual
Ver. 1.19
42
9.8.3
Forward Integral time parameter (TI UP) and reverse Integral time parameter (TI dN)
TI parameters are an integral value that add the error correction signal to the existing calibration signal,
TI UP is applied when the valve moves in the direction of increasing the output air pressure, and TI DN
is applied when the valve moves in the direction of decreasing the output air pressure. A smaller TI
makes the valve faster to reach a target position and tends to cause oscillation.
3 seconds
→
→
→
Press <UP> or
<DOWN> button
if the above is not
displayed.
Press <UP> or
<DOWN> button
if the above is not
displayed.
<UP>/<DOWN>
→
<ESC>
3 times
→
9.8.4
Forward D parameter (Kd UP) and reverse D parameter (Kd dN)
The Kd parameter is a differential value that adds the correction signal due to the rate of error to the
existing calibration signal. Kd UP is applied when the valve moves in the direction of increasing output
air pressure, and Kd dN is applied when the valve moves in the direction of decreasing output air
pressure. A larger D value makes the valve hunting easier, and a smaller value can lead to poor linearity
or dynamic properties.
3 seconds
→
→
→
Press <UP> or
<DOWN> button
if the above is not
displayed.
Press <UP> or
<DOWN> button
if the above is not
displayed.
<UP>/<DOWN>
→
<ESC>
3 times
→
