End Position Guiding - Samson 5857 Mounting And Operating Instructions

− '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.
The error message is reset and the actuator returns to closed-loop operation if the input sig-
nal moves within 0.2 V of the lower range value.
Settings\Actuator\Functions
Functions
Detect input signal failure
Positioning value upon input signal failure
Internal positioning value

16.3.2 End position guiding

The actuator stem moves to the end positions earlier if the end position guiding function is
active:
− 'End position guiding when the value falls below the limit'
The actuator stem moves to the 0 % position when the input signal falls below 'Value
below limit (end position guiding)'.
− 'End position guiding when the value exceeds the limit'
The actuator stem moves to the 100 % position when the input signal exceeds 'Value
above limit (end position guiding)'.
Note
When 'End position guiding (stem extends)' = 0 % and 'End position guiding (stem retracts)'
= 100 %, the end positioning guiding function is deactivated.
Settings\Actuator\Functions
Functions
End position guiding (stem extends)
End position guiding (stem retracts)
EB 5857 EN
Annex A (configuration instructions)
WE Adjustment range
No Yes/No
Internal Internal, last position
0.0 % 0.0 to 100.0 %
WE Adjustment range
1.0 % 0.0 to 49.9 %
97.0 % 50.0 to 100.0 %
16-3