Samson 373 Series Operating Instructions

106 EB 8389 EN
Binary input
8 Binary input
8.1 Types3730-2/-3 and
Type3731-3
The following description only applies to po-
sitioners tted with an optional binary input.
The optional binary input can be used to ac-
tivate various functions:
− [Transfer switching state]
The switching state of the binary input is
logged.
− Set on-site operation write protection
After the rst initialization, a local write
protection can be activated. While the
binary input is active, no settings can be
changed at the positioner. The positioner
cannot be re-initialized. Enabling cong-
uration over Code 3 is not active.
− Start partial stroke test (PST)
The positioner starts a single partial
stroke test. The test is performed using
the settings in Code49 - d2 to Code49
- d9 (see section5.4).
− Go to fail safe reference value
An on/off valve moves to the predeter-
mined fail-safe set point when the posi-
tioner is in automatic mode. This function
is not performed if the positioner is in the
manual mode or fail-safe position mode.
− Switch between AUTO/MAN
The positioner changes from the auto-
matic mode to the manual mode or vice
versa. This function is not performed if
the positioner is in the fail-safe position
mode.
− Start data logger
Activation of the binary input causes the
data logger to start see section4.2).
− Reset diagnosis
Active functions of statistical information
and tests are stopped and the diagnostic
data is reset once.
− External solenoid valve connected
The positioner recognizes and logs that
an external solenoid valve is connected.
− Leakage sensor
The 'External leakage - Perhaps soon ex-
pected' error is generated. The error is
reset when the edge control is switched
to 'Off'. The message remains saved in
the logging.
The optional binary input can only be con-
gured using the TROVIS-VIEW software
and using the DD parameters. The switching
state is transmitted when the switch is closed
by default.
Settings > Positioner > Options
− Action at active binary input: [Transfer
switching state], Set on-site operation write
protection, Start partial stroke test (PST), Go to
fail safe reference value, Switch between
AUTO/HAND, Start data logger, Reset
diagnosis, External solenoid valve connected,
Leakage detection
− Edge control binary input:
[On: open switch/Off: closed switch], On:
closed switch/Off: open switch
− Fail-safe reference value: 0.0 to 100.0%,
[50.0%]
− Conguration binary input: [Active], Passive
Note

Samson 373 Series Specifications

General

Brand	Samson
Model	373 Series
Category	Valve Positioners
Language	English