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GE FVP110 User Manual

GE FVP110
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259
Description of Control Parameters
Manual Tuning Guideline
Description of Control Parameters
The FVP110's basic method of controlling the valve position is PI-D control. This control
is characterized by the fact that a rapid output change is prevented by the derivative
term of D being added to the feedback.
In addition, FVP110 has a boost function that serves as an output acceleration function
after an input change, because it compensates the nonlinearity caused by the structure
of a valve or FVP.
When you set these parameters, change the mode of the transducer block and AO
function block to O/S.
SERVO_GAIN
Tuning range: 0.1 to 1300 (Default: 120)
Set the loop gain of PI-D control.
The proportional gain of PI-D control increases in proportion to (SERVO_GAIN /
INTERNAL_GAIN).
If you increase the value for SERVO_GAIN, tracking capability tends to increase,
whereas control stability tends to decrease.
SERVO_RESET
Tuning range: 0, 2 to 50 sec (Default: 15 sec)
Set the integral time of PI-D control.
The pace of change in integral volume quickens in reverse proportion to the integral
time and the volume changes repeatedly until the deviation disappears.
If you set a:
Smaller value for the integral time, the deviation disappears more quickly,
whereas fast accumulation of integral components may cause an overshoot.
Larger value for the integral time, you can reduce the accumulation of excessive
integral components when the deviation is large, but it takes longer for the
deviation to disappear.
0, this function is invalid.

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GE FVP110 Specifications

General IconGeneral
BrandGE
ModelFVP110
CategoryValve Positioners
LanguageEnglish

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