Festo CPA VI Series Manual page 41

3. Installation
External
auxiliary
pilot air
CPA... 9808A
If the supply pressure of your CPA valve terminal does
not lie between 3 and 8 bar, you must operate it with
external auxiliary pilot air. The auxiliary pilot air is sup-
plied here externally via connection 12/14.
PLEASE NOTE
• Use regulated external auxiliary pilot air
(3 to 8 bar). This will ensure reliable, faultless
operation of the CPA valve terminal.
• If your CPA valve terminal is fitted with valve plates
with Ident. code H, K or N (3/2-way valves), the
external auxiliary pilot air must be set to correspond
to the supply pressure with which these valves are
operated (see diagrams).

Control pressure 12/14 [bar]
!
Working pressure P1 [bar]
"
Startup control pressure
Reset control pressure
Fig. 3/3: Auxiliary pilot air diagram for CPA10 valve
plates with Ident. code N, K or H

!
"
3-7