Operating Mode, Required/Valid - Samson 3785 Mounting And Operating Instructions

List of parameters
Operating mode,
required/valid
MODE_BLK/TARGET-MODE
54
EB 8382-1 EN
Positioner operating mode.
Up to Firmware Version K 1.20:
Firmware Version K 1.30 and higher:
Positioner operating modes:
Automatic (AUTO): In this operating mode, the positioner follows the cyclic or
acyclic set point entered via the parameter SP (w) according to the scale and unit
entered via PV_SCALE (reference variable range).
Manual (MAN): In this operating mode, the positioner also follows the set point
entered via the parameter SP (w) according to the scale and unit entered via
PV_SCALE (reference variable range). The parameter INCREASE_CLOSE (direction
of action), however, is not processed. Communication monitoring parameters
(FSAFE_TIME, _TYPE, _VALUE) are also not processed.
Local override (LO): In this operating mode, the positioner follows the acyclic set
point entered via the parameter OUT (correction value) according to the scale and
unit (mm or degrees) entered via OUT_SCALE (travel/angle of rotation range). With
the characteristic deactivated, this value corresponds to the actual valve position in
mm or degrees. The parameter INCREASE_CLOSE (direction of action), however, is
not processed. Communication monitoring parameters (FSAFE_TIME, _TYPE,
_VALUE) are also not processed.
Out of service (OS): Fail-safe operating mode. The valve is automatically moved in
fail-safe position.
Remote cascade (RCas): In this operating mode, the positioner follows the cyclic set
point entered via the parameter RCAS_IN (w_rcas) according to the scale and unit
entered via PV_SCALE (reference variable range).
Operating mode during start-up (warmstart)
The response of the positioner to the warmstart is determined by the parameter
FSAFE_TYPE (fail-safe action).
If FSAFE_TYPE is set to "adjust to fail-safe value", the positioner switches to automatic
operating mode and adjusts to the value determined by the parameter FSAFE_VALUE.
If FSAFE_TYPE is set to "adjust to last set point value" or "fail-safe position determined
by spring action", the device remains in fail-safe position. As soon as a valid set point
SP is transmitted to the positioner, the operating mode changes to automatic.
OS, AUTO
OS, LO, MAN, AUTO