Pilot Control Of The Valve Solenoid Coils (Pilot Air) - Festo MPA-FB Series Manual

3. Installation

3.4.1 Pilot control of the valve solenoid coils (pilot air)

Pilot control variants
Operation with external pilot air
Operation with internal pilot air
Tab. 3/1: Recogniton features of the pilot control variants
Internal pilot air supply
External pilot air supply
3−12
Depending on the variant of the pneumatic interface or multi
pin sub−base, pilot control of the valve solenoid coils is car
ried out with internal or external pilot air. You can ascertain
the pilot control variant for which your MPA−S valve terminal
is equipped, by the following features (see table).
Pilot control connection 12/14 on the pneumatic
interface or multipin sub−base
marked and open
not marked and closed
If the operating pressure lies between 3
operate the pilot control of the valve solenoid coils with in
ternally branched pilot air. The auxiliary pilot air is branched
here in the pneumatic interface or from supply channel 1 in
the multipin sub−base.
Note
Internal pilot air is branched centrally for all valve coils
·
from supply connection 1 in the pneumatic interface or
multipin sub−base. This also applies when the MPA−S
valve terminal is operated with several pressure zones
(see Fig. 3/3).
If the operating pressure lies below 3 bar or above 8 bar,
pilot control of the valve solenoid coils must be operated
with external pilot air. The pilot air is supplied via pilot
connection 12/14.
8 bar, you can
Festo P.BE−MPA−EN en 0802c