Additional Equipment - Samson 3730-5 Mounting And Operating Instructions

Design and principle of operation
The positioner communicates and is powered
using IEC 61158-2 transmission technology
conforming to F
OUNDATION
cation.
As a standard feature, the positioner comes
with a binary input used to signalize process
information over the F
network.
The extended EXPERTplus diagnostics are in-
tegrated into the positioner. They provide in-
formation on the positioner and generate di-
agnostic and status messages, which allow
faults to be pinpointed quickly.
The positioner is suitable for the following
types of attachment using the corresponding
accessories:
− Direct attachment to SAMSON
Type 3277 Actuator: section 4.1
− Attachment to actuators according to IEC
60534-6 (NAMUR): section 4.2
− Attachment according to VDI/VDE 3847:
section 4.3
− Attachment to Type 3510 Micro-flow
Valve: section 4.4
− Attachment to rotary actuators acc. to
VDI/VDE 3845: section 4.5

3.1 Additional equipment

Solenoid valve
If the operating voltage for the solenoid
valve (12) fails, the supply pressure for the
i/p converter is vented to the atmosphere.
The positioner can no longer operate and
the control valve moves to the fail-safe posi-
tion determined by the actuator, regardless
of the set point.
12
™ fieldbus specifi-
fieldbus
™
OUNDATION
NOTICE
The manual set point is also reset to
0 % after the solenoid valve is acti-
vated!
A different manual set point must be
entered again (Code 1).
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.
External position sensor
In this version, only the sensor is mounted to
the control valve. The positioner is located
separately from the valve. The connection of
x and y signals to the valve is established by
cable and piping for air (only without induc-
tive limit switch).
Leakage sensor
By upgrading the positioner with a leakage
sensor, it is possible to detect seat leakage
when the valve is in the closed position.
Binary input BI1 (14)
As a standard feature, the positioner comes
with a binary input used to signalize process
information over the F
network.
Binary input BI2 (15)
This binary input BI2 is optional. It is an ac-
tive input which is powered by the positioner
to connect a floating contact. The switching
state of the floating contact can be indicated
over the F
OUNDATION
fieldbus
™
OUNDATION
fieldbus network.
™
EB 8384-5