Samson 3730 Series Mounting And Operating Instructions page 103

For normal operation, simply start initialization by pressing the INIT key after mounting the
positioner on the valve and defining the fail-safe position and setting the volume restriction.
The positioner only needs to work with its default settings. If necessary, perform a reset (see
the 'Operation' section).
Note
An initialization procedure in progress can be canceled by pressing the rotary pushbutton.
STOP is displayed for three seconds and the positioner changes to the fail-safe position
(SAFE). Clear the fail-safe position again over Code 0 (see the 'Operation' section).
The time required for the initialization proce-
dure depends on the actuator transit time,
which means that initialization can take a few
minutes.
After a successful initialization, the positioner
runs in closed-loop operation indicated by the
closed-loop operation icon.
A malfunction leads to the process being can-
celed. The initialization error is displayed ac-
cording to how it has been classified by the
condensed state (see the 'Malfunction' section).
Note
When Code 48 - h0 = YES, the diagnostics automatically start to plot the reference graphs
(drive signal steady-state d1 and hysteresis d2) after initialization has been completed. This
is indicated by tESt and d1 or d2 appearing on the display in alternating sequence.
An error during the plotting of the reference graphs is indicated on the display over Code 48
- h1 and Code 81. The reference graphs do not have any effect on closed-loop operation.
EB 8384-3 EN
Start-up and configuration
Alternating readings
Initialization in progress
Icon depending on ini-
tialization mode select-
ed
Bar graph display indi-
cating the progress of
the initialization
Initialization successfully
completed. Positioner in
automatic mode ( )
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