Position Feedback Signal; Binary Input - Samson 3374 Series Mounting And Operating Instructions

Annex A (configuration instructions)

16.5 Position feedback signal

The valve position feedback indicates the valve travel. It uses an analog signal issued at the
terminal U OUT or I OUT. The span of the position feedback signal is adjusted over the lower
and upper range value parameters.
Note
− At least 2.5 V or 5 mA (depending on the input signal used) must separate the upper and
lower range values.
− When c37 = YES, the position feedback signal is 12 V or 24 mA in the event of a fault.
− During initialization, transit time measurement or zero calibration, the position feedback
signal = 0 V or 0 mA.
Code Description
c05 Unit
c06 Lower range value
c07 Upper range value
c37 Superimposing an error message

16.6 Binary input

The function of the binary input can be configured as required. Code c12 is used to deter-
mine the switching state for the active function. c12 = NINV: the binary input is active when
the input terminals IN 4 +/IN 4 – are connected with each other. c12 = INV: The binary in-
put is active when the connection between the input terminals IN 4 +/IN 4 – is interrupted.
Î Do not connect an external supply voltage to the input terminals.
− Inactive (c11 = NONE): No function is assigned to the binary input.
− Priority position (c11 = PRIO): The priority position is triggered and the actuator stem
moves to the position entered in Code c34 as soon as the binary input changes to the ac-
tive switching state. The valve leaves the priority position and follows the input signal af-
ter the binary input changes to the inactive switching state.
− Next entry in information level (c11 = NEXT): If the NEXT function is selected in
Code c11, the first code of the information level (i01) is displayed as soon as binary in-
16-6
Default Adjustment range
mA mA (current signal)
V (voltage signal)
4.0 mA 0.0 to 7.5 V or
0.0 to 15.0 mA
20.0 mA 2.5 to 10.0 V or
5.0 to 20.0 mA
NO YES (error reading active)
NO (error reading inactive)
EB 8331-4 EN