5. Maintenance and conversion
5-34
Festo P .BE-MPA-EN en 1108e
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 solenoi d
coils which can be actuated by the multi-pin connection is
limited to 24 addresses.
If equipped exclusively with one size (MPA 1 or MP A 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
)
Maximum
number
X
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 c oils
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 foll o w s:
X
max
=
24
Ꮛ
n
1
× n
2
Ꮠ