YOKOGAWA UP35A, User Manual

Page: 226 / 412

10-25
IM 05P02D41-01EN
Output (Control and Retransmission) Functions
10.14.4 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
10.14.5 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
10
10.14 Adjusting Motor-operated Valve Position (Position Proportional Output)