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STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com
Manual 4054 – rev.00 02/2021 – DT2 - 15 -
5.3 Calibration
When smart electro-pneumatic valve Positioner installation is completed, it must be initialized. When initializing, the
valve will open and close automatically, please check the working conditions and take measures to ensure that the
valve movement does not affect the process and personal safety.
There are two ways to initialize: automatic tuning and manual tuning.
5.3.1 Ready to initialize
Check the positioner installation and electrical connection is in line with the requirement of chapter 4 of the manual.
Connect the air supply and the power/ signal. Control the valve manually to run it from fully open to fully close and
confirm the installation is correct.
Into the position sensor angle check mode, the 1
st
line shows feedback lever angle.
Press▲ or▼ to control the valve movement, when the valve is opened to half, the displayed angle value is about 0
degrees.
Press▲ or▼ to control the valve to reach the fully open and fully closed position of the value, the
positioner should not have an UP or DOWN alarm. The feedback lever should not interfere with
other objects.
5.3.2 Auto-tuning
1) After electrical and pneumatic positioner connection, press and hold A/M more than 3 seconds to enter the
configuration mode.
2) Press , up shows "N0", down shows " ",
3) Press function key A/M, the down showing will be blinking, enter the parameter configure state.
4) Press for more than 3 seconds, up shows "STRT", enter the auto-tuning.
5) The whole procedure goes from "STEP1" to "STEP5", and shows the current steps on the down line
6) After tuning, up show the values of parameters, the down shows the "ED XXXX", XXXX means the relevant
parameters of tuning.
7) Press and hold A/M 3 seconds to return to normal mode.
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