Samson 3725 - Operating the positioner

50 EB 8394 EN
Operating the positioner
7 Operating the positioner
Before start-up, mount the positioner following the sequence described in section5. Apply
the electric reference variable to start up the positioner. Refer to section5.8.3.
− LOW on the display indicates that the reference variable is lower than 3.8mA.
− The positioner is ready for operation with its default settings for most applications.
− After connecting the electrical signal, the positioner performs a calibration of the capacitive
keys which takes approx. three seconds. During this time, do not touch the key panel.
Otherwise, the keys will not work properly. Disconnect and reconnect the electrical signal
to restart the calibration of keys.
Reading after connecting the power supply
Reading when the positioner has not yet been initialized
S
Code P0 is displayed. The fault indication icon and S (fail-safe po-
sition) appear on the display.
The reading indicates the lever position in degrees in relation to the
mid-axis.
Reading when the positioner has been initialized:
%
Code P0 is displayed. The positioner is in closed-loop operation indi-
cated by the
closed-loop operation icon.
The indicated value corresponds to the control position in %.
Details on initialization of the positioner: section7.8.
Note