YOKOGAWA UT55A - Setting Valve Traveling Time (Estimating Type); Selecting Feedback Input (Resistor;Current)

10-32
IM 05P01C31-01EN
10.16AdjustingMotor-operatedValvePosition(PositionProportionalOutput)
10.16.4 SettingValveTravelingTime(EstimatingType)
Description
In the estimating type, a traveling time required to fully open the valve from its fully-
closed position is set and valve positions are estimated according to the time consumed
for valve operation.
The valve position estimating type is used when the feedback input of valve positions
cannot be obtained.
(Wiring for feedback input is not necessary.)
The
fully-openedside
relaykeepsON-statewhentheoutputis100%,andthefully-
closedsiderelaykeepsON-statewhentheoutputis0%.
OperatingPrinciples
In the estimating type, the valve position is obtained by calculating the virtual feedback
input based on the valve traveling time.
However
,the
virtualfeedbackinputstartscalculationfrom50%atpower-on.
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menusymbol
TR.T Valvetravelingtime STD 5 to 300 s OUT
10.16.5 SelectingFeedbackInput(Resistor/Current)
Description
Only the wiring for resistor or current is necessary for feedback input. There is no setting.
► Wiring:17.4.5ValvePositionOutputandFeedbackInputWiring