Samson TROVIS 3730-3 Mounting And Operating Instructions page 101

until Adopt valve position 1 [7.15] appears.
7. Turn
8. Press to confirm the entered first valve position as valve position 1.
9. Turn until Set point (open-loop control) [7.14] appears.
10. Press and turn
–34.0 to +34.0°.
11. Press
to confirm the value (second end position).
12. Turn until Adopt valve position 2 [7.17] appears.
13. Press to confirm the entered second valve position as valve position 2.
Setting the SUB initialization mode
Note
The SUB initialization mode is a substitute calibration, which can be selected to replace a po-
sitioner while the process is running. In this mode, the control parameters 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 SUB initialization mode can only be started when the positioner has not yet been initial-
ized.
1. Write down the current valve position in %.
2. Turn (within Start-up [7] menu) until Initialization mode [7.10] appears.
3. Press and turn
4. Press to confirm the setting.
until Pin position [7.2/7.3/7.4] appears.
5. Turn
6. Press and turn
7. Press to confirm the setting.
EB 8484-3 EN
to move the valve to the second end position. Enter a value from
to set the SUB initialization mode.
to enter the pin position to match how the actuator is mounted.
Operating the positioner
101