Subject to change – 2009/06
46
Internet: www.festo.com/catalogue/...
Valve terminals type 32 MPA
Key features – Electrical components
Electrical power as a result of current reduction
Power management
Each MPA solenoid coil is protected
with a spark arresting protective
circuit as well as against polarity
reversal.
All valve types are additionally
equipped with integrated current
reduction.
MPA valves are supplied with operat-
ing voltage in the range 18 … 30 V
(24 V +/–25%). This high tolerance is
made possible through integrated
control electronics and offers addi-
tional security, e.g. if the operating
voltage drops.
Individual valve
Valves can also be used on individual
sub-bases for actuators further away
from the valve terminal.
•
Detachable electronics module with
integrated holding current
reduction
•
Electrical M8 connection, 4-pin
with screw connection
Electrical multi-pin plug connection
The following multi-pin plug connec-
tion is offered for the valve terminal
MPA:
•
Sub-D multi-pin plug connection
(25-pin)
Pins 1 … 24 are used for addresses
1
24 in order
pins up to 24 are left free. Pin 25 is
reserved for the neutral conductor.
The valves are switched by means of
positive or negative logic (PNP or
NPN). Mixed operation is not
permitted.
Each pin on the multi-pin plug can
actuate exactly one solenoid coil If
of valve positions is 24, this means
that 24 valves can be addressed with
one solenoid coil.
With 12 or less valve positions, 2 sole-
noid coils per valve can be addressed.
With 12 or more valve positions, the
number of available valve positions
for valves with two solenoid coils
-H-
Note
If a single solenoid valve is
assembled on a double solenoid
valve position, the second address
is also occupied and cannot be
used.
1 … 24 in order.
If fewer than 24 addresses are used
for the valve terminal, the remaining
actuate exactly one solenoid coil. If
the maximum configurable number
for valves with two solenoid coils
decreases.
Guidelines on addressing for valves/solenoid coils
•
The maximum possible number of
addresses with a multi-pin plug
connection is 24.
•
Each manifold block/electronics
module occupies a defined number
of addresses/pins:
– Manifold block MPA1 for 4 single
solenoid valves: 4
– Manifold block MPA1 for 4
double solenoid valves: 8
– Manifold block MPA2 for 2 single
solenoid valves: 2
– Manifold block MPA2 for 2
double solenoid valves: 4
•
The numbering of the addresses
goes from left to right in ascending
consecutive order. The following
applies to the individual valve
positions: address x for coil 14 and
address x+1 for coil 12.
•
If single solenoid valves are
mounted on manifold blocks for
double solenoid valves, the address
of coil 12 and the assigned pin will
remain unused.
