Ytc YT-2700 Series, Руководство пользователя

Страница: 18 / 20

18
"RUN" indicates that YT-2500 adjusts valve stroke with receiving signals (4~20mA) and "PV"
indicates the process value. In RUN mode, the valve stroke continuously changes according to
the input signal. There are six types of display message in RUN mode
To change display, push <ESC> and <UP> at same time. The display will change in order
indicated above. If <ESC> and <DOWN> pushed simultaneously, the order will be displayed in
opposite order. By pressing <ESC>, the display will return to RUN Mode.
Auto Calibration (AUTO CAL)
Auto Calibration (Auto Cal) automatically calibrates YT-2300 in very simple manner. Auto Cal
process takes about 2~3 minutes, and the duration of the process varies upon the size of the
actuator as well. There are 3 types of Auto Cal.
* It is recommended to calibrate the positioner under AUTO2 when setting the system initially.
Auto 1 Calibration
Auto 1 Calibration is mainly used when YT-2700 has not been set. The parameter which needs to
be calibrated in order for valve system to operate, will be calibrated; however, KP, KI, and KD
values do not change.