Samson 3374-11 - 9.5 Position feedback signal

54 EB 8331-4 EN
Congurationlevel
9.4.2 Operatingdirectionincreasing/decreasing
− Endpositionguiding(stemretracts)(c35): The actuator stem moves the valve to the low-
er end position if the input signal reaches the value entered in this code. Setting c35 =
100.0% causes this function with a retracting actuator stem to be deactivated.
− Endpositionguiding(stemextends)(c36): The actuator stem moves the valve to the top
end position if the input signal reaches the value entered in this code. Setting c36 =
0.0% causes this function with an extending actuator stem to be deactivated.
Code Description WE Adjustment range
c35 End position guiding
(stem retracts) 97.0 % 50.0 to 100.0%
c36 End position guiding (stem extends) 1.0 % 0.0 to 49.9%
9.5 Position feedback signal
The position feedback indicates the actuator stem position, which is issued as an analog sig-
nal at the terminals U OUT or I OUT. The span of the position feedback signal is adjusted
over the lower and upper range value parameters.
− 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 WE Adjustment range
c05 Unit mA mA (current signal)
V (voltage signal)
c06 Lower range value 4.0mA 0.0 to 7.5V or 0.0 to 15.0mA
c07 Upper range value 20.0mA 2.5 to 10.0V or 5.0 to 20.0mA
c37 Superimposing an error message NO YES (error reading active)
NO (error reading inactive)
Note