Smart Positioner
YT-2500 / 2550 / 2501 Series
Product manual
Ver. 1.04
40
8.6.6
PT1 (PT1) and PT2 (PT2) Values
PT value indicates the minimum time duration(unit: 0.1mSec) of internal signal controlling
pilot valve.
PT1 is for increased input signal, and PT2 is for decreased input signal’s PT
values.
<ENTER>
<ENTER>
<UP>/<DOWN>
<ENTER>
Press <UP> or
<DOWN> button
if the above is not
displayed.
68 means 6.8mSec
<ESC>
3 times
8.6.7
Period T (PERIOD T)
Period T indicates the positioner
’s internal control time interval. As default, positioner will
check current position respective to current input signal in every 100 msec.
8.6.8
Auto DZ (AUTO dZ)
After the auto calibration, the positioner will create deadzone automatically. However,
depending on the valve’s period of use, hunting or oscillation may occur due to packing
friction or other reasons and this function stabilizes the valve by detecting them automatically
and increasing the deadzone at the time of its occurrence. This will stabilize the valve but
deadzone is increased.
<ENTER>
<ENTER>
<UP>/<DOWN>
<ENTER>
Press <UP> or
<DOWN> button
if the above is not
displayed.
<ESC>
3 times
