Samson 3730 Series - Sub - Substitute Calibration

7-12 EB 8384-3 EN
Start-up and conguration
Enter OPEN position:
1. Turn untilCode0appears.
2. Press , the code number 0 blinks.
3. Turn until MAN appears.
4. Press toconrm.
5. Turn untilCode1appears.
6. Press , the code number 1 blinks.
7. Turn until the required valve position is
reached.
8. Press toconrmtheOPENposition.
Manual set point
(current angle of rota-
tion is indicated)
Start initialization:
Î Press INIT key.
7.5.4 SUb – Substitute calibration
A complete initialization procedure takes several minutes and requires the valve to move
through its entire travel range several times. In the SUb initialization mode, the control pa-
rameters are estimated and not determined by an initialization procedure. As a result, a high
level of accuracy cannot be expected. A different initialization mode should be selected if the
plant allows it.
The substitute calibration is used to replace a positioner while the process is running. For this
purpose,thecontrolvalveisusuallyxedmechanicallyinacertainpositionorpneumatically
by means of a pressure signal which is routed to the actuator externally. The blocking posi-
tion ensures that the plant continues to operate with this valve position.
By entering the blocking position (Code 35), closing direction (Code 34), pin position (Code
4), nominal range (Code 5) and direction of action (Code 7), the positioner can calculate the
positionerconguration.
Î Perform a reset before re-initializing the positioner if the substitute positioner has already
been initialized (see the 'Operation' section).
Enable conguration:
Congurationislockedagainifnosettingsareenteredwithin120seconds.