Festo CPA VI Series Manual page 53

3. Installation
Festo P.BE-CPA-EN en 0207c
Valve sub-bases, which are fitted onto sub-bases with pres-
sure zone separation, are supplied with compressed air which
is provided to the left of this sub-base (see Fig. 3/5).
You can ascertain the number of pressure zones with which
your CPA valve terminal is equipped by the designation on the
special sub-base (grey dot above work connection 2).
CPA valve terminal with two pressure zones
These CPA valve terminals have a sub-base with pressure
zone separation. The left-hand pressure zone is supplied with
compressed air via connection 1 on the left-hand end plate;
the right-hand pressure zone is supplied via connection 1 on
the right-hand end plate.
CPA valve terminal with more than two pressure
zones
A sub-base with pressure zone separation is required for
each pressure zone. The outer pressure zones are supplied
with compressed air via connection 1 on the end plates, the
remaining pressure zones are supplied with compressed air
via connection 2 on the sub-bases which are fitted with addi-
tional supply plates (see diagram). As an additional aid to
remove the exhaust air, a silencer can be fitted at connection
4 on these sub-bases. If connection 4 is not used, it must be
sealed with a blind plug.
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