Samson 3730-2, Mounting And Operating Instructions

Page: 62 / 128

62 EB 8384-2 EN
Operating controls and readings
Readings
Icons assigned to certain codes, parameters
and functions are indicated on the display.
Operating modes:
−
( manual mode)
The positioner follows the manual set
point (Code 1) instead of the mA signal.
blinks: The positioner is not initialized.
Operation only possible over manual set
point (Code 1).
− (automatic mode)
The positioner is in closed-loop operation
and follows the mA signal.
−
S SAFE
The positioner vents the output. The valve
moves to the mechanical fail-safe posi-
tion.
Bar graph:
In manual and automatic modes, the
bars indicate the set point deviation that de-
pends on the sign (+/–) and the value. One
bar element appears per 1 % set point devi
-
ation.
If the positioner has not been initialized, (
blinks on the display), the bar graph indi-
cates the lever position in degrees in relation
to the mid-axis. One bar element corre -
sponds to approximately a 5° angle of rota -
tion. The fifth bar element blinks (reading >
30°) if the permissible angle of rotation has
been exceeded. Lever and pin position must
be checked.
Status messages
−
Maintenance alarm
−
Maintenance demanded/
Maintenance required
−
blinks: Out of specification
These icons indicate that an error has oc-
curred.
A classified status can be assigned to each
error. Classifications include “No message”,
“Maintenance required”, “Maintenance de
-
manded” and “Maintenance alarm“ (see
u
EB 8389 on EXPERTplus valve diagnos -
tics).
Enable configuration
This indicates that the codes marked with an
asterisk (*) in the code list are enabled for
configuration (see section 14).
6.1 Serial interface
The positioner must be supplied with at least
4 mA.
The positioner can be connected directly to
the computer over the local serial interface
and the serial interface adapter.
The operator software is TROVIS-VIEW with
installed device module 3730-2.