Smart Positioner
YT-2500 / 2550 / 2501 Series
Product Manual
Ver. 1.34
54
9.8.5
Tight Shut Close (TSHUT CL)
Tight shut close shows the current value in percentage (%). Input current of 4mA is 0%, 20mA is 100%.
If temporary Tight shut close value (≤100%) is set and input current value is below the set % value, the
valve’s position is immediately moved to 0%. For example, if rotary actuator is used and the valve’s
closing direction is 0% and input value of the current is above Tight shut open set value, it will release
all the remaining pressure from Out1 of the actuator which will have the return spring power of the
actuator or Out2 pressure to close the valve and keep it from any leakage.
<ENTER>
→
<ENTER>
→
<UP>/<DOWN>
<ENTER>
→
Press <UP> or
<DOWN> button
if the above is not
displayed.
<ESC>
3 times
→
9.8.6
Split Range Mode (SPLIT)
The valve can be operated in full stroke by split range control of input signal as 4~12mA or 12~20mA.
<ENTER>
→
<ENTER>
→
<UP>/<DOWN>
<ENTER>
→
4~20mA Control
Initial state
Press <UP> or
<DOWN> button
if the above is not
displayed.
4~12mA Control
<UP>
→
<UP>
<ENTER>
→
<ESC>
3 times
→
12~20mA Control
4~20mA Control
4~12mA Control
