Samson 3785 series, Монтаж и эксплуатация

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7.5 Operating modes
Possible operating modes
The following operating modes are defined in Profile AO (Analog Output):
Automatic (Auto)
Manual (Man)
Remote Cascade (RCas)
Local Override (LO)
Out of Service (OS)
The Type 3785 Positioner supports the following operating modes:
up to firmware version K 1.20: OS, AUTO
firmware version K 1.30 and higher: OS, LO, MAN, AUTO
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).
Local Override (LO) or Manual (Man)
In these operating modes, the positioner follows the acyclic set point entered via the par-
ameter 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 IN-
CREASE_CLOSE (direction of action), however, is not processed. Communication monitor-
ing parameters (FSAFE_TIME, _TYPE, _VALUE) are also not processed.
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).
Out of service (OS):
Fail-safe operating mode. The valve is automatically moved to fail-safe position.
EB 8382-1 EN
43
How to implement the PROFIBUS Master Class 1