Festo MPA Series - Adding Valve Positions

5. Maintenance and conversion
5−35
Festo P.BE−MPA−EN en 0910d
5.4.3 Adding valve positions
You can easily adapt the MPA−S valve terminal to the
requirements of your machine or system by adding valve
locations. The smallest extension unit is a sub−base with
4valve locations (MPA1) or 2 valve locations (MPA2).
MPA−S valve terminal with multi−pin plug connection
The valve terminals can be configured with as many
sub−bases as there are addresses available (see table).
Withthese valve terminals, the maximum number of solenoid
coils which can be actuated by the multi−pin connection is
limited to 24 addresses.
If equipped exclusively with one size (MPA 1 or MPA 2) and
valves with the same number of solenoid coils, this will result
in the following maximum number of sub−bases:
MPA−S valve terminal
Valve positions per
sub−base (n
1
)
Solenoid coils per
valve position (n
2
)
max.
1)
MPA1 4 1 6
2 3
MPA2 2 1 12
2 6
1)
Maximum number of sub−bases when equipped exclusively with one size and
with valves with the same number of solenoid coils
Tab.5/9: Maximum number of sub−bases
With 24 controllable solenoid coils the maximum number of
sub−bases (X
max)
can be calculated as follows:
X
max
+
24
ǒ
n
1
n
2
Ǔ