Festo MPA-FB Series, Manual

Page: 149 / 168

A. Technical appendix
A−11
Festo P.BE−MPA−EN en 0502b
Electric components, MPA valve terminal with CPX terminal
Electronic module VMPA...−FB−...
Operating voltage supply for electronic
components (V
el/sen
)
Rated voltage
Maximum internal current consumption at
24 V (irrespective of switching status of
the valves)
Load voltage supply for valves (V
val
)
Rated voltage
Maximum internal current consumption at
24 V
(irrespective of switching status of the
valves)
Diagnostic message undervoltage V
OFF
,
load voltage outside function range
24 V DC ± 25 %
20 mA
24 V DC ± 25 %
8 mA (
not
electrically isolated, electronic
module type: VMPA1−FB−EM S −8 or VMPA2−FB−
EM S −4))
25 mA (electrically isolated, electronic module type:
VMPA1−FB−EM
S −8 or VMPA2−FB−EM S −4))
17.5 ... 16 V
Maximum current consumption per sole
noid coil out of load voltage V
val
at 24 V
MPA1 MPA2
Rated pick−up current/duration
Rated current with current reduction 45 mA / 20 ms
8 mA after 20 ms 90 mA / 20 ms
18 mA after 20 ms
Example of current calulation
Current consumption with two simultaneously switched MPA2 solenoid coils and a non− electrically
isolated electronic module:
I
el/sen
= 20 mA
Rated pick−up current: I
val
= 8 mA + 2 x 90 mA = 188 mA
Rated current with current reduction: I
val
= 8 mA + 2 x 18 mA = 44 mA
TableA/9: Technical specifications on electric components, MPA valve terminal with CPX
terminal
Technical specifications for the electronic module of the MPA
valve terminal with CPX terminal can be found in the manual
for the CPX I/O modules.