4. Commissioning
4-16
Festo P .BE-MPA-EN en 1108e
MPA-S valve terminal with CPX terminal or
CPI module
The two-colour LEDs on the valves have a double function.
– When yellow, the LEDs indicate the switching status of the
solenoid coils.
– When red during operation, the LEDs indicate an error in
the electronic module.
LED
Position of the valve Correct state Error status
Out – Normal position Logical0(signalnotpresent)
– S witching position Logical 0 after MO actuated
Yellow
illumi-
nated
– S witching position Logical1(signalpresent)
– Normal position Logical 1 but:
– the compressed air supply
is not OK or
– the pilot exhaust is blocked
or
– Servicing required
Red
illumi-
nated
– in the star ting phase
for approx. 2 seconds
Check phase when the supply
voltage has been switched on
– during operation See electronics description of
the MPA pneumatic mo dule
Red
fla-
shing
– during operation MPA-S with electronics module
VMPA...-FB-EM...-D2...:
See electronics description of
the MPA pneumatic mo dule
Tab. 4/6: Meaning of the LED display (MPA-S valve terminal with CPX terminal or CPI
module)
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