Festo MPA Series - Page 191

A. Technical appendix
A−17
Festo P.BE−MPA−EN en 0910d
Electric components, MPA−S valve terminal with CPX terminal or CPI interface
Electronics module VMPA...−FB−...
Operating voltage supply for electronic
components (V
EL/SEN
):
 Nominal voltage
 Max. intrinsic current consumption at 24 V
(internal electronics, all outputs 0 signal)
24 V DC ± 25 %
8 mA
VMPA...−FB−EMG−... VMPA...−FB−EMS−...
Load voltage supply for valves (V
VAL
)
 Nominal voltage
 Max. intrinsic current consumption at 24 V
(internal electronics, without valves)
 Diagnostic message undervoltage V
VAL
, load
voltage outside function range
24 V DC ±25 %
typ. 23 mA
Ţ17.5 ... 15.5 V
24 V DC ±25 %
typ. 3 mA
Ţ17.5 ... 15.5 V
Maximum current consumption per solenoid
coil from load voltage V
VAL
at 24 V
MPA1 MPA2
 Nominal pick−up current/duration
 Nominal current with current reduction
58 mA / 24 ms
9 mA after 24 ms
99 mA / 24 ms
18 mA after 24 ms
Pressure sensor plate
 Current consumption V
EL/SEN
at 24 V
 Accuracy
 Display increments
21 mA
< ±2.5 % FS (Fullscale)
20 mbar
Proportional pressure regulator VMPA−6TA...
Operating voltage supply
 Nominal voltage
 Current consumption
24 V DC (permitted residual ripple max. ± 10 %)
max. 300 mA
Example of current calculation
Current consumption with two solenoid coils MPA2 switched in parallel and one electronics module
without separate circuits:
I
EL/SEN
= 1 x 8 mA =8 mA
 Current consumption during pick−up phase (24ms): I
VAL
= 3 mA + 2 x 99 mA = 202 mA
 Current consumption with current reduction: I
VAL
= 3 mA + 2 x 18 mA = 39 mA
Tab.A/10: Technical data on electric components, MPA−S valve terminal with CPX terminal
or CPI module