Festo Контроллер крайних положений SPC11 - Manual (Page 97)

4. Commissioning
4-39
Festo P.BE-SPC11-SYS-EN en 1406e
Positioning orders A positioning order remains permanently stored if the power
supply is switched on. If the power supply is switched off
and then on again, the positioning order (P.01...P.04) at in-
puts I1...I4 will then be processed.
If there is no positioning order when the power supply is
switched on and if the moveable mass is not at one of the end
positions, the valve slide will remain in the electrically cen-
tered intermediate position. Due to the asymmetrical voltage-
pressure curve of the proportional directional control valve,
the slide can now move slowly into one of the end positions.