Samson 5827, Монтаж и эксплуатация, Страница: 76 / 92

16-2 EB 5827-2 EN
Annex A (configuration instructions)
16.2 Position feedback signal
The position feedback indicates the position of the actuator stem.
The span of the position feedback signal is adjusted over the lower and upper range value
parameters.
Settings\Inputs and outputs\Position feedback signal
Position feedback signal WE Adjustment range
Lower range value 0.0 V 0.0 V to 10.0 V
Upper range value 10.0 V 0.0 V to 10.0 V
16.3 Functions
16.3.1 Detect input signal failure
The positioner detects a failure of the input signal as soon as the value falls below the lower
range value by 0.3 V or 0.6 mA. An input signal failure is indicated in the 'Service' folder
('Errors') as well as by the red LED :
The input signal failure can only be detected when at least 0.5 V or 1 mA is set as the lower
range value.
Time in s
ON
OFF
2 4 6 8 10
If the 'Detect input signal failure' function is active, the reaction of the actuator upon failure
of the input signal is determined by the
Positioning value upon input signal failure parame-
ter.
− 'Positioning value upon input signal failure' = Internal
The actuator stem moves to the position specified in the 'Internal positioning value' pa -
rameter upon failure of the input signal.
− 'Positioning value upon input signal failure' = Last position
The actuator stem remains in the last position that the valve moved to before failure of the
input signal.
Note