4
Transfer switching state
[default]
The switching state of the binary input is
logged.
4
Set local operation write protection
Settings cannot be changed at the
positioner while the binary input is ac-
tive. The configuration enabled function
in Code
3
is not active.
4
Switch between AUTO/MAN
The positioner changes from automatic
mode
(AUTO) mode into manual
mode
(MAN) and vice versa.
No action is started if the positioner is in
the fail-safe position (SAFE).
4
Various diagnostic functions (refer to
EB 8389 EN on EXPERTplus valve diag-
nostics).
Note:
The optional binary output can only
be configured using the TROVIS-VIEW soft-
ware and over the DD parameters (refer to
EB 8389 on EXPERTplus valve diagnostics).
The default switching state is with an open
switch.
Connection to terminals A-B:
Binary input
for DC voltage signals
Connection to terminals B-C:
Contact input
for an external contact
3.2
Communication
The positioner is equipped with an interface
for HART
®
protocol (Highway Addressable
Remote Transducer) for communication pur-
poses. Data are transmitted in a superim-
posed frequency (FSK = Frequency Shift
Keying) on the existing signal loop for the 4
to 20 mA reference variable.
Either a HART
®
capable handheld commu-
nicator or a computer with FSK modem can
be used to establish communication and op-
erate the positioner.
3.2.1 Configuration using
TROVIS-VIEW software
Refer to Table 5 on page 33 for order num-
bers.
The positioner can be configured using the
TROVIS-VIEW software.
The positioner is equipped for this purpose
with an additional digital
SERIAL INTERFACE
to allow a computer to be connected over an
adapter cable from the RS-232 or USB port
of the computer to the positioner.
The TROVIS-VIEW software enables the user
to easily set parameters in the positioner
and view process parameters online.
Note:
The TROVIS-VIEW software is a com-
mon operator interface for various smart
SAMSON devices. The software together
with a device-specific module allow the con-
figuration and parameterization of the de-
vice.
The device-specific module for Type 3731-3
can be downloaded free of charge from the
SAMSON website (Services > Software >
TROVIS-VIEW).
Additional information on TROVIS-VIEW
(e.g. system requirements) can found on the
SAMSON website and in the Data Sheet
T 6661.
10
EB 8387-3 EN
Design and principle of operation
Summary of Contents for TROVIS 3731-3
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