Festo Контроллер крайних положений SPC11 - Manual (Page 102)

4. Commissioning
4-44
Festo P.BE-SPC11-SYS-EN en 1406e
In order to avoid such causes, proceed as follows:
S Pressurise the complete system slowly (e.g. by using the
safety start-up valve type HEL-... or HEM-...). No unex-
pected movements of the actuators will then occur.
S Make sure that the moveable mass cannot move itself or
be moved manually (e.g. by means of a clamping unit) out
of the end position when the operating voltage is
switched on.