- 29 -
Auto calibration and Basic operations
Warning : Since this makes valve or actuator move, before auto calibration valve must be
separated from entire system.
Button
YT-2300 Series perform various functions with using four buttons.
The shape and position of buttons are as follows.
<Enter> : It is used to go to Main menu, save adjusted parameter values or choose sub
menus.
<ESC> : It is used to return to previous menu.
<UP> : It is used to move to another menu or change parameter values.
<DOWN> : It is used to move to another menu or change parameter values.
- 30 -
RUN Mode
After connect power to YT-2300, the following is displayed on LCD in 6 seconds.
⇦
PV
Run mode
⇨
⇦
currently displayed on LCD
Run on the bottom line means that YT-2300 adjust valve stroke with receiving outside
signal (4-20mA) and PV means the number on the LCD. In RUN mode, valve stroke is
changed according to input signal. There are six types displayed in Run mode.
①
Run PV
Valve stroke of Process Value (%)
②
Run SV %
Input signal of Set Value (0 - 100%)
③
Run SV mA
Input signal of Set Value (4 - 20mA)
④
Run MV
Motor controlled
variable of Manipulate
Value (Digit)
⑤
Run Vel
Current valve speed (Digit)
⑥
Run Err
Difference between SV and PV (%)
In order to change display, push <ESC> and <UP> at same time. Whenever push the
button, display is changed in order. If push <ESC> and <DOWN> simultaneously, the
order is opposite and if push only <ESC>, display is returned to RUN mode.
First auto calibration
First auto calibration is usually used when YT-2300 has not been set, such as the
occasion of initial setting with valve at valve company or replacement with other product
in the field. In this case, entire parameters are set by using AUTO2 calibration.
Warning
: When
YT-2300 is installed
on the valve in the
field
after setting, we
recommend
to
use
'AUTO1
calibration'
than
AUTO2
calibration.
Because
optimum
parameters are set by valve company, it is better that those registered parameters are
not changed by AUTO1 calibration.
