Festo CPA-SC Series, Manual

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3. Installation
3−18
Festo P.BE−CPASC−EN en 0808c
Note
Valve plates with Ident. code X, 3/2−way valve:
This valve does not depend on supply connection 1 of
the valve terminal. With this valve compressed air or
vacuum is connected at connection 4. The valve is
exhausted via connection 3. Pilot air is supplied via the
valve terminal.
Valve plates with Ident. code I, 2 x 2/2−way valves:
With this valve plate vacuum is supplied at connection (5).
Connection (5) is switched by valve solenoid coil (14).
The operating pressure is provided at connection (2) and
can be used as a reject pulse. Connection (2) is switched
by valve solenoid coil (12).
Operate these valve plates on CPA−SC valve terminals,
which are also fitted with other valve plates, in a sep
arate pressure zone with separate exhaust channel (5).
3.3.4 Connecting the pneumatic tubing
Note
·
Seal connections which are
not
required for the func
tioning of the CPA−SC valve terminal with blanking plugs.
·
The pressure compensation hole (connection L) must not
be sealed with a blanking plug.
·
The sequence in which the work tubing is connected
depends on the screw connectors used:
Screw connector with socket head screw:
any desired sequence is possible.
Screw connector with external socket:
fitting should preferably be undertaken from left to right
(space for the wrench).
Note
·
If necessary, place a suitable sealing ring under the M5/M7
screw connectors or silencers, in order to avoid leakage.