Festo Smart cubic CPA-SC Series, Manual

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3. Installation
3−8
Festo P.BE−CPASC−EN en 0412b
3.3 Pressure zone separation
The CPA−SC valve terminal can be operated with maximum
2pressure zones. These pressure zones are formed by separ
ating elements which can be inserted in the supply channel
(1) and in the exhaust channels (3 or 5).
Please note
·
Valves which control large−volume actuators should be
operated in a separate pressure zone. You will then
avoid problems with backpressure in exhaust channels 3
and 5.
·
If the CPA−SC valve terminal is also fitted with other valve
plates, operate the valve plates with Ident. code I (2 x
2/2−way valves) in a separate pressure zone with separ
ate exhaust channel 5.
Please note
Note that due to the separator element in the following
valve locations, the valve plates have up to 20 % less flow:
the valve location with the fixing pin
and the two neighbouring valve locations.
Note also that even with pressure zone separation, chan
nels 12/14 and 82/84 are not blocked. Pilot control of all
valve solenoid coils, whether with internal or external pilot
air, is always branched or supplied centrally.