Samson TROVIS SAFE 3730-6, Монтаж и эксплуатация

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EB 8384-6S EN 19
Design and principle of operation
3.2 Type of application
The types of application 'Control valve' and
'On/off valve' are available. The manual
mode (MAN) and the automatic mode
(AUTO) can be selected with both types of
applications.
Operating
mode
Control valve On/off valve
Automatic The positioner uses
the set point w to
position the valve.
Discrete analysis of
the set point w
Reading
on display
Valve position x in
%
Valve position x in
% and O/C
(Open/Close) in
alternating
sequence
Manual The positioner follows the manual set
point given over local operation.
Depending on the type of application,
certain diagnostic functions cannot be
performed or analyzed (
u
EB 8389-1S on
EXPERTplus valve diagnostics).
After initialization and a reset, the type of
application 'On/off valve' is set.
−
Section 7.8 contains details on discrete
analysis of on/off valves.
−
In manual mode, an on/off valve can be
moved past 100 % of the nominal range
(with the closed position for AIR TO OPEN)
or below 0 % of the nominal range (with
the closed position for AIR TO CLOSE). See
section 7.1 for the valve closed position.
3.3 Mounting versions
The positioner is suitable for the following
types of attachment using the corresponding
accessories (see section 3.8):
−
Direct attachment to SAMSON
Type 3277 Actuator
Î
See section 5.3.
−
Attachment to actuators according to
IEC 60534-6:
Î
See section 5.4.
−
Attachment according to VDI/
VDE 3847-1/-2:
Î
See section 5.5 and section 5.6.
−
Attachment to Type 3510 Micro-flow
Valve
Î
See section 5.7.
−
Attachment to rotary actuators accord-
ing to VDI/VDE 3845:
Î
See section 5.8.
3.4 Additional equipment
Inductive limit switch
In this version, the rotary shaft of the posi-
tioner carries an adjustable tag which actu-
ates the built-in proximity switch. The option-
al inductive contact (11) is connected to A1,
while the remaining software limit switch is
connected to A2.
Solenoid valve
If the operating voltage for the solenoid
valve (12) falls below 12 V, the supply pres -
sure for the booster is vented to the atmo-
sphere. As a result, the actuator is vented
and the control valve moves to the fail-safe
Note