CHUANYI Valve Positioner HVP3 Auto Calibration Quick Guide

This guide explains how to configure and automatically initialize a CHUANYI HVP3 smart valve positioner using the local three-button interface.

Button Functions

Button	Function
MODE	Confirm a selection, switch operating modes, or enter and exit a special function
UP	Move upward through the menu, increase a value, or move the valve in manual mode
DOWN	Move downward through the menu, decrease a value, or move the valve in manual mode

A short press means pressing a button for less than four seconds. A long press means pressing and holding it for more than four seconds.

Unlocking the Keypad

When the lock symbol appears in the upper-right corner of the display:

1. Press UP and DOWN simultaneously.
2. Hold both buttons for approximately one second.
3. Release the buttons when the keypad is unlocked.

The positioner will not respond to normal button commands while the keypad is locked.

Before Calibration

Confirm that:

• The positioner is correctly mounted.
• The feedback lever or rotary coupling is correctly installed.
• The pneumatic tubing is correctly connected.
• Clean and sufficient instrument air is available.
• The electrical input signal is connected.
• The valve can safely travel through its full operating range.
• The YFCT actuator setting is correct.

Warning: Automatic initialization moves the valve through its operating range. Isolate the valve from the process before starting.

Recommended One-Touch Auto Calibration

The one-touch method is the fastest commissioning procedure for the HVP3.

Step	Procedure
1. Confirm the Actuator Type	Check that YFCT is set to Lin for a linear actuator or nLin for a rotary actuator.
2. Select Automatic Mode	Make sure the display shows AUTO. Briefly press MODE to switch between automatic and manual modes when required.
3. Set the Input Current	Apply an input signal of 10.0 ± 0.1 mA.
4. Start Initialization	Press and hold the DOWN button for more than four seconds.
5. Wait for Completion	The positioner automatically detects the valve travel and control parameters. The procedure normally takes approximately three to six minutes.
6. Return to Operation	After successful initialization, the positioner automatically returns to normal automatic control.
7. Verify Valve Travel	Apply several input signals and confirm that the valve moves in the required direction and reaches both end positions.

According to the HVP3 manual, the one-touch initialization method requires automatic mode and a control current within 10.0 ± 0.1 mA. Moving the valve manually to 50% is not specified as part of this method.

Calibration Through the AUTE Menu

Use this method when the mechanical feedback installation needs to be checked before initialization.

Step 1: Enter the Function Menu

1. Press and hold MODE.
2. Wait until the function-selection menu appears.
3. Use UP or DOWN to select:

3 AUTE

4. Briefly press MODE to enter the initialization function.

The main function menu includes 1 CONF, 2 ANSH, 3 AUTE, 4 FBCA and RET.

Step 2: Check the Mechanical Feedback Range

Linear Actuator

Use UP and DOWN to move the valve between its fully closed and fully open positions.

The total feedback-shaft rotation should be:

25° to 70°

When the measured angle is below 25° or above 70°, adjust the sliding pin position on the feedback lever.

Rotary Actuator

Use DOWN to move the valve to its fully closed position.

The displayed feedback angle at the closed position should normally be:

−40° to −60°

When it is outside this range, adjust the rotary feedback coupling.

Step 3: Start Initialization

After completing the installation-position check:

1. Briefly press MODE three times.
2. Wait while the positioner performs automatic initialization.
3. Do not interrupt the air supply or input signal.
4. Wait until the display indicates that initialization is complete.
5. Press and hold MODE to return to automatic control.

Initialization normally requires approximately three to six minutes.

Parameter Configuration

Entering the Configuration Menu

1. Press and hold MODE.
2. Select 1 CONF using UP or DOWN.
3. Briefly press MODE to enter parameter configuration.
4. Use UP or DOWN to select a parameter.
5. Briefly press MODE. The current setting flashes.
6. Use UP or DOWN to change the setting.
7. Briefly press MODE again to confirm.
8. Press and hold MODE to return to automatic control.

Main Configuration Parameters

No.	Parameter	Available Settings	Function
1	YFCT	Lin, nLin	Selects linear or rotary actuator feedback
2	SDIR	riSE, FALL	Sets the relationship between the input signal and commanded position
3	YDIR	riSE, FALL	Sets the direction of the LCD position indication
4	SFCT	Lin, 1:50, 50:1, FrEE	Selects linear, equal-percentage, quick-opening or custom characterization
5	AFCT	OFF, ON, LASt, POS	Selects the positioner response to a detected control fault
6	MA4	3.8–20.0 mA	Sets the lower input-signal limit
7	MA20	3.8–20.0 mA	Sets the upper input-signal limit
8	DEBA	Auto, 0.1–10%	Sets the positioner deadband
9	SPRA	0–25%	Sets the lower travel limit
10	SPRE	75–100%	Sets the upper travel limit
11	SCUA	0–100%	Sets the lower signal cut-off point
12	SCUE	0–100%	Sets the upper signal cut-off point
13	SHUT	0–100%	Sets the shutoff threshold
14	YCLS	ALL, UP, dN, NO	Selects pneumatic tight shutoff at both ends, upper end, lower end or neither end
15	DEFT	YES, NO	Restores the factory settings
16	RET	—	Returns to the previous menu

The standard factory settings include YFCT = Lin, SDIR = riSE, YDIR = riSE, SFCT = Lin, MA4 = 4 mA, MA20 = 20 mA, DEBA = 0.4%, SPRA = 0% and SPRE = 100%.

Actuator Type — YFCT

Setting	Application
Lin	Linear-stroke actuator
nLin	Rotary or part-turn actuator

For globe control valves with a conventional feedback lever, select:

YFCT = Lin

For ball valves, butterfly valves and other part-turn valves, select:

YFCT = nLin

Important: YFCT must match the actual mounting arrangement. Using a linear setting on a rotary installation may prevent successful initialization. Using a rotary setting on an incompatible linear installation may damage the positioner’s mechanical feedback assembly.

Input Signal Direction — SDIR

The SDIR parameter determines how the commanded valve position changes as the input signal increases.

Setting	4 mA	20 mA
riSE	0%	100%
FALL	100%	0%

When 0% is defined as valve closed:

SDIR = riSE

• 4 mA = valve closed
• 20 mA = valve open

SDIR = FALL

• 4 mA = valve open
• 20 mA = valve closed

SDIR does not determine the mechanical fail-open or fail-close position. The actual fail position also depends on the actuator spring direction and pneumatic arrangement. The parameter only reverses the relationship between the electrical input signal and the commanded position.

Display Direction — YDIR

The YDIR parameter controls how actual valve travel is shown on the LCD.

Setting	Actual Travel	LCD Indication
riSE	0% → 100%	0% → 100%
FALL	0% → 100%	100% → 0%

Changing YDIR reverses the position display. It does not reverse the actual relationship between the 4–20 mA input and the valve movement. Use SDIR to reverse the control direction.

Output Characterization — SFCT

Setting	Characteristic
Lin	Linear
1:50	Equal-percentage or logarithmic
50:1	Quick-opening
FrEE	User-defined characteristic

For normal initial commissioning, select:

SFCT = Lin

When FrEE is selected, the output characteristic can be configured through a 21-point table from 0% to 100%.

Fault Response — AFCT

Setting	Electronic Fault Response
OFF	Move toward the 0% position
ON	Move toward the 100% position
LASt	Hold the last controlled position
POS	Move to a manually specified position

This parameter controls the response to a detected electronic or control fault. It should not be treated as the only definition of the valve’s fail-safe position because loss of instrument air is governed by the actuator and pneumatic configuration.

Automatic and Manual Modes

Briefly press MODE to switch between:

• AUTO — the valve follows the incoming control signal
• MAN — the valve can be moved locally with UP and DOWN

In manual mode:

• Press UP to increase the valve position.
• Press DOWN to decrease the valve position.

In automatic mode:

• Press DOWN to display the current input signal.
• Press UP to review temperature information.

Factory Reset

Use factory reset only when the existing configuration is no longer suitable.

1. Press and hold MODE.
2. Select 1 CONF.
3. Briefly press MODE.
4. Use UP or DOWN to select 15 DEFT.
5. Briefly press MODE until the setting flashes.
6. Select YES.
7. Briefly press MODE to confirm.
8. Verify YFCT and all required project settings.
9. Perform a new automatic initialization.

Factory reset restores the configured parameters to their default values, so the positioner must be checked and recalibrated before being returned to service.

Final Function Check

After initialization, apply the following input signals:

Input Signal	Expected Position with SDIR = riSE
4 mA	0%
8 mA	25%
12 mA	50%
16 mA	75%
20 mA	100%

Confirm that:

• The valve moves in the correct direction.
• The displayed position agrees with the actual valve position.
• The valve reaches both end positions.
• Valve movement is smooth and stable.
• The positioner returns to AUTO.
• No active alarm code remains.

Quick Setup Sequence

For most standard linear control valves:

Unlock keypad → YFCT: Lin → AUTO mode → Input: 10.0 ± 0.1 mA → Hold DOWN → Wait 3–6 minutes → Verify 4–20 mA travel

For most rotary control valves:

Unlock keypad → YFCT: nLin → AUTO mode → Input: 10.0 ± 0.1 mA → Hold DOWN → Wait 3–6 minutes → Verify rotation