Mounting Versions; Additional Equipment - Samson 3730 Series Mounting And Operating Instructions

Design and principle of operation
compensate for any fluctuations in the supply
pressure.
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.

3.1 Mounting versions

The positioner is suitable for the following
types of attachment using the corresponding
accessories (see section 3.6):
− 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.
20
™ fieldbus specifi-
fieldbus
™
OUNDATION
− Attachment to rotary actuators accord-
ing to VDI/VDE 3845:
Î See section 5.8.

3.2 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.
NOTICE
!
The manual set point is also reset to 0 % af-
ter the solenoid valve is activated.
A different manual set point must be entered
again (Code 1).
Inductive limit contact
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 contact).
EB 8384-5 EN