Samson TROVIS 3730-1, Translation Of Original Instructions

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EB 8484-1 EN 3-3
Design and principle of operation
Software limit contacts
The software limit contacts signalize that the
valve has reached one of the two adjustable
limits.
− When limit 1 is not reached
− When limit 2 is exceeded
The following versions are available:
− Connection of a PLC according to
IEC 61131-2, P
max
= 400 mW
− Connection to NAMUR switching amplifi -
er acc. to EN 60947-5-6
Position transmitters
The position transmitter is a two-wire trans-
mitter and issues the travel sensor signal (4
to 20 mA) processed by the microcontroller.
This signal is issued independent of the posi-
tioner’s input signal. Additionally, the posi-
tion transmitter allows positioner faults to be
indicated over a signal current of 2.4 mA or
21.6 mA.
3.2 Mounting versions
The TROVIS 3730-1 Positioner is suitable for
the following types of attachment using the
corresponding accessories (see the 'Installa-
tion' section):
− Direct attachment to Type 3277
Actuator
The positioner is mounted on the yoke.
The signal pressure is connected to the
actuator over a connection block: inter-
nally over a hole in the valve yoke for
"actuator stem extends" fail-safe action
and through an external signal pressure
line for "actuator stem retracts" fail-safe
action.
− Attachment to actuators according to
IEC 60534-6:
The positioner is mounted to the control
valve using a
NAMUR bracket.
− Attachment according to VDI/
VDE 3847-1/-2:
Attachment according to VDI/
VDE 3847-1/-2 using the corresponding
accessories allows the positioner to be
replaced quickly while the process is run-
ning.
− Attachment to Type 3510 Micro-flow
Valve
The positioner is attached to the valve
yoke using a bracket.
− Attachment to rotary actuators accord -
ing to VDI/VDE 3845:
The positioner is mounted to the rotary
actuator using the corresponding acces-
sories.