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YT-3400/3450 series
6. Operation
6.1
Safety
Following process will operate valve and actuator. Before proceed with any AUTO
Calibration, please separate valve from the entire system, so AUTO Calibration will
affect entire valve process.
6.2
Button Description
Positioner has 4 buttons, and they enable to perform various functions.
Fig. 11:
<ENTER>:
Enter to main and sub menus, and save
<ESC>:
Return to previous menu
<UP> & <DOWN>:
Move to next menu, and adjust.
6.3
Run Mode (RUN)
After power connection to the positioner, Run Mode will be
appeared on positioner’s LCD screen within 6 seconds. “RUN”
indicates that the positioner adjusts the valve stroke according to
the receiving signal. There are six types of display message in
“RUN” Mode.
1. Run PV:
Process Value - valve stroke %
2. Run SV %:
Set Value – input signal 0~100%
3. Run SV mA:
Set Value – input signal 4~20mA
4. Run MV:
Manipulate Valve – Motor Manipulate Value (digit)
5. Run Vel:
Velocity – Current valve stem’s velocity (digit)
6. Run Err:
Error – Difference between SV and PV (%)
To change display, push <ESC> + <UP> buttons at the same time. The display will change
in the order indicated above. If <ESC> + <DOWN> pushed, the order will be appeared in
opposite order. By pressing <ESC>, the display will return to “RUN” mode.
