Smart Positioner
YT-3700 / 3750
Product Manual
Ver. 1.03
55
8.8.2
Forward P parameter (KP UP) and reverse P parameter (KP dN)
The KP parameter is the proportional control constant to the calibration signal to reduce the error
between the target position and the current position, the KP UP is applied when the valve moves in
the direction of increasing output air pressure, and KP dN is applied when the valve moves in the
direction of venting output air pressure. A larger value of gains "KP UP" or "KP dN" moves the valve
faster to reach a target position, but will tend to oscillate it if set to high. However, smaller gains
improve stability, but make it slower to reach a target position.
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
8.8.3
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
