rotork YT-2700, Product Manual

Page: 31 / 51

Smart Positioner
YT-2700 Product Manual
Ver. 1.18
31
8.3 Run Mode (RUN)
After power connection to the positioner, Run Mode will be appeared on
positioner’s LCD screen in about 4 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 Value
– 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, Press and hold <ESC>, press <DOWN> several times until a desired display
appears. The display will change in the order indicated above. If <ESC> + <UP> pushed, the order
will be appeared in opposite order. By pressing <ESC>, the display will return to
“RUN PV” mode.
※
Please note that the screen will return to “RUN PV” mode if 100 seconds elapse from the last
button pressed.
※
By pressing <ESC> button several times from any MODES, it will return to “RUN PV” mode.
Therefore, if the users have entered into wrong modes by mistake or do not wish to proceed with
their current work, they could return to “RUN PV” mode.
8.4 Auto Calibration mode (AUTO CAL)
Auto Calibration mode (AUTO CAL) automatically calibrates the positioner.
“AUTO CAL” process
takes about 2~3 minutes, and the duration of the process varies upon the size of the actuator. There
are 3 types of AUTO CAL.
Zero Point End Point
Dead Zone,
P, D
RA / DA
AUTO 1 O O X X
AUTO 2 O O O O
AUTO 3 X X O O
It is recommend to perform AUTO2 calibration for initial positioner setting.