Festo Smart cubic CPV-SC Series, Manual

Page: 46 / 80

4. Commissioning
4-4
Festo P.BE-CPVSC-EN en 0112NH
1
4 2
5 3
14 12
1
2
1 Externally supplied auxiliary pilot air (3 to 7 bar)
2 Safety start-up valve (slow build up of pressure of
complete supply)
Fig. 4/1: Example of valve-cylinder combination with slow
increase in pressure of the complete supply
The table below shows the effects of slow start-up pressuriza-
tion when there are electric signals.
External auxili-
ary pilot air Pressure
increase in
complete
supply Pressure
increase in the
auxiliary pilot
air (12/14) Time of
switching
point of a
valve Movement of
the cylinder
Branched after the
safety start-up
valve slow slow after pressure
increase with (1)
fast
Branched in front
of the safety
start-up valve slow fast before pressure
increase with (1)
slow