Hanse VTC Series, Installation, Operation And Maintenance Instructions

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Auto calibration of Proximity Positioner Ln2 Valve.
Perform Auto Calibration 1
In this mode, all parameters necessary for valve operation are set except KP, KI, KD. It is used
to re-execute calibration by users in the field after being supplied the positioner unit whose
parameters were set by the valve company.
1. Power Up valve and ensure compressed air 100 PSI is at Supply Line
2. During auto calibration valve will open and close so ensure that you have Liquid nitrogen off
3. Push <ENTER> for 6 seconds in RUN mode and AUTO CAL message should appear.
4. Push <ENTER> and then AUTO1 mode is displayed.
5. Push <ENTER> again at AUTO1 mode and Auto 1 calibration is started.
6. When Auto 1 calibration is done, ‘COMPLETE’ message appears on the LCD. After 4
seconds the procedure returns to RUN mode and the valve stroke by current input signal is
displayed as a percentage.
Perform Auto Calibration 2
All parameters necessary to operate valve are set. This calibration is used when the positioner
is first installed with valve. Refer back to First Auto Calibration.
1. Power Up valve and ensure compressed air 100 PSI is at Supply Line
2. During auto calibration valve will open and close so ensure that you have Liquid nitrogen off
3. Push <ENTER> for 6 seconds in RUN mode and AUTO CAL message should appear.
4. Push <ENTER> and then AUTO1 mode is displayed. Use Up/Down keys to change to
AUTO2
5. Push <ENTER> again at AUTO2 mode and Auto 2 calibration is started.
6. When Auto 2 calibration is done, ‘COMPLETE’ message appears on the LCD. After 4
seconds the procedure returns to RUN mode and the valve stroke by current input signal is
displayed as a percentage.
RUN Mode
After connecting power to the positioner, the following is displayed on the
LCD in 6 seconds.
RUN on the bottom line means that the Smart Positioner adjusts valve
stroke based on an outside signal (4-20 mA) and PV refers to the
number on the LCD. In RUN mode, valve stroke is changed according
to input signal.
There are six options in RUN mode. In order to change RUN display
modes, hold <ESC> and press <UP> or <DOWN> to scroll through
display options.
First Auto Calibration
First auto calibration is usually used when the positioner has not been
set, such as the initial setting with valve at the valve company or
replacement with other product in the field.
Notice: When the positioner is installed on the valve in the field after
setting, we recommend using AUTO1 calibration rather than AUTO2
calibration. This is because the AUTO 2 calibration parameters have
been factory set to the optimum settings.
KP
This is a proportion constant value that is correction by error %. If this
value is too big, there can be hunting, even though it finds position by the
input signal. If the value is too small, accuracy gets worse.
KI
This is an integral constant value adding or subtracting the correction
that is corrected error % on the previous correction signal. If this value
is too big, there can be oscillation. If it is too small, the time to find the
exact position increases.
KD
This is a differential constant value adding the previous correction signal
with the changing correction signal by the error % change rate.
RA/DA
Direct acting (DA) or Reverse acting (RA).
Auto Calibration Types
Auto 1 Calibration (AUTO1)
In this mode, all parameters necessary for valve operation are set except
KP, KI, KD. It is used to re-execute calibration by users in the field after
being supplied the positioner unit whose parameters were set by the
valve company.
1. Push <ENTER> for 6 seconds in RUN mode and AUTO CAL
message should appear.
2. Push <ENTER> and then AUTO1 mode is displayed.
3. Push <ENTER> again at AUTO1 mode and Auto 1 calibration is started.
4. When Auto 1 calibration is done, ‘COMPLETE’ message appears on
the LCD. After 4 seconds the procedure returns to RUN mode and
the valve stroke by current input signal is displayed as a percentage.
Auto 2 Calibration (AUTO2)
All parameters necessary to operate valve are set. This calibration is
used when the positioner is first installed with valve. Refer back to First
Auto Calibration.
Auto 3 Calibration (AUTO3)
All parameters necessary to operate valve are set except zero and end
point. This function is used to re-execute auto calibration without
changing the zero and end point after adjusting them manually.
1. Push <DOWN> at AUTO2 and AUTO3 is displayed.
2. Push <ENTER> and AUTO3 calibration is started. The remaining
procedures of this calibration are the same as other calibrations.
BIAS Calibration
BIAS is the standard value of motor control in the positioner. It is affected
by supply pressure, KP and other values. BIAS should be re-adjusted if
supply pressure or KP is changed, otherwise accuracy will decrease.
1. Press and hold <ENTER> for 6 seconds in RUN mode and AUTO
CAL message should appear.
2. Scroll with <DOWN> button until BIAS mode is displayed.
3. Push <ENTER> and BIAS calibration is started.
4. When BIAS calibration is done, ‘COMPLETE” message appears on
the LCD. After 4 seconds the procedure is returned to RUN mode.
Velocity Calibration (V_0)
This function is used to find the standard value to recognize accurate
valve speed. This value must be correct for KI control to work properly.
To check if velocity value is correct:
1. Push <ESC> button at RUN mode and RUN Vel is displayed.
2. Check the number on the bottom of the screen. Normally, the value
will be between -2 and 2.
3. If value is greater than 5, V_0 calibration is required.
To calibrate V_0:
1. Press and hold <ENTER> for 6 seconds in RUN
mode until AUTO
CAL message is displayed.
2. Scroll with <DOWN> button until V_0 mode is displayed.
3. Push <ENTER> and calibration is started.
4. When V_0 calibration is done, ‘COMPLETE’ message appears on the
LCD. After 4 seconds the procedure is returned to RUN mode.
Manual Mode
Manual mode is used to raise or lower the valve stem manually. In this
mode, the valve stroke is adjusted only by operating buttons, not by the
current input signal. This mode does not affect controlling data
registered in the positioner. It only is used to move the valve stem up
and down.
1. Push <ENTER> at RUN mode until AUTO CAL message is
displayed.
2. Push <DOWN> and MANUAL mode is displayed.
3. Push <ENTER> again. Two lines appear on LCD. The upper line
indicates valve stroke by percentage and the lower line indicates
absolute value of inner resistance of the positioner. *MA means that
Manual mode is in operation.
4. Push <UP> or <DOWN> and valve stem moves up or down.
Regardless of RA/DA, if <UP> is pushed, valve stem moves up (in
case of linear valve). If <DOWN> is pushed, valve stem moves down.
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2
3
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6 Run PV
Run SV %
Run SV mA
Run MV
Run Vel
Run Err Valve Stroke (%)
Input Signal (0 - 100%)
Input Signal (4 - 20 mA)
Motor/Piezo Valve Manipulate Valve (Digit)
Current Valve Stem’s Velocity (Digit)
Difference between SV and PV (%) Process Value
Set Value
Set Value
Manipulate Value
Velocity
Error
AUTO1
AUTO2
AUTO3
Zero Point
°
°
x
End Point
°
°
x
KP, KI, KD
x
°
°
RA/DA
x
°
°
(1) Keep pushing
<ENTER> for 6 seconds. (2) Push <ENTER>. (3) Push <DOWN>.
(5) Completed.
RUN MODE.
Authorization and Copyright of this document is
controlled by Hanse Environmental Inc.
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