Festo CDVI-DN, Description

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3. Installation
3-10
Festo P.BE-CDVI-EN en 1202e
3.4 Notes on installing the CDVI
3.4.1 Pilot control of the solenoid coils (pilot air supply)
Note
– Operate the CDVI whenever possible with unlubricated
pilot air (port (12/14)). Otherwise observe the instruc-
tions in the section “Compressed air preparation”.
– In the case of CDVI with internally branched pilot air, the
above-mentioned instruction applies also to the supply
air (port (1)).
The pilot air is supplied centrally to all valves of the CDVI.
– Therefore, operate the valve terminal either with intern-
ally branched or externally supplied pilot air.
This will ensure reliable operation of the valve terminal.
Internal pilot air supply
If the operating pressure of the CDVI is between 3 ... 8 bar,
you can operate the pilot control of the solenoid coils with an
internally branched pilot air supply.
Note
•
Internal pilot air supply is branched centrally from sup-
ply port (1) in the right end plate for all solenoid coils.
This also applies when the CDVI is operated with several
pressure zones (see Fig. 3/3 and Fig. 3/4).