6
system will go back to the previous menu.
3.3.2 Set up limit position by local selector switch
①
Turn status selector switch at “Stop”
，
turn operate selector switch at “Open” in three seconds, then goes into
main menu.
②
Turn the status selector switch from “Stop”
→
“Local”, going into “Basic Settings”. After choosing “Accept
Valve Close Limit”
，
on the right side there is the timely-position’s encoder
（
0
～
65535
）
.
③
Now the selector switch is turned at “Local” position
，
electrically operate the valve to turn at closing limit
position or by handwheel.
④
Press status selector switch to turn from “Local”
→
“Stop”
→
“Local” and save
，
the red indicator above the
LCD starts to blink 2 times and then light up
，
which means that position is set up as closing limit position.
⑤
Now selector switch is turned at “Local”
，
electrically operate the valve to turn at open limit position or by
handwheel.
⑥
Press status selector switch to turn from “Local”
→
“Stop”, operate selector switch to turn from “Stop”
→
“Close” and choose “Open confirmed”. Turn the status selector switch from “Stop”
→
“Local” and save. The green
indicator above the LCD starts to blink 2 times and then light up
，
which means that position is set up as open limit
position.
⑦
After setting up, operation selector switch turns from “Stop”
→
“Remote”, and it will be back to valve position
interface.
Note: If user turns status selector switch from “Stop” to “Remote” before pressing “Ok” key
to save, Open/Close limit is not set up. The system will go back to the previous menu.
4.Function of electric acutuator and parameter setup
4.1Main menu setup
After choosing “Basic Settings” and press “Ok”. If password is 0, directly go into the next menu, otherwise user
needs to input Basic password to go into next menu.
4.1.1 Accept Valve close/open Limit
：
Put cursor here, manually or electrically make the valve to be at
fully-closed/fully-open position. Press “Ok” to save this position as fully-closed/fully-open position. This setup
record will not be changed after factory reset.
4.1.2 Deadband Adjustment
：
this function will be only active at remote self-control(analog control) .When the
absolute value of difference value between control signal and timely valve position signal is bigger than deadband
value
，
the electric actuator starts to work. An appropriate deadband can save actuator from oscillate around the
valve position coming from user’s end. Setup range is 0.3%
～
9.9%
，
and factory setting is 1.5%.
4.1.3 Action on Signal Loss
：
when actuator is at remote automatic control and control current is lower than one
2mA, the system will judge the control signal losses. To ensure safety, valve can be put at “Remain in
Situ”/“Close”/“open”. Factory setting
：
Remain In Situ.
4.1.4 LCD Display
：
user can choose“Invert”/“Positive” according to current situation.Factory setting
：
Positive.
4.1.5Local Control Mode
：
User can set up the operate selector switch as“Inching”/“Maintain”.Factory setting
：
Inching.
4.1.6Basic Password Change
：
After choosing this
，
on the right side there will be the previous password
，
and the
password shall in the range of 0-255
，
press “Ok” to save. Factory setting
：
0.
Accept Valve close Limit XXXX
Accept Valve open Limit XXXX
Deadband Adjustment 0.3%
～
9.9%
Action on Signal Loss Remain In Situ/Close/open
LCD Display Invert/Positive
Local Control Mode Inching/Maintain
Basic Password Change XXX
Resume Default OK?
Basic password
XXX
Basic Settings Enter
？
