Festo MPA-FB Series, Manual

Page: 92 / 168

4. Commissioning
4−14
Festo P.BE−MPA−EN en 0502b
MPA valve terminal with CPX terminal
The two−colour LEDs have a double function.
When yellow the LEDs indicate the switching status of the
valve solenoid coils.
When red the LEDs indicate a fault in the electronic mo
dule. All the LEDs of a pneumatic module then light up
red.
LED Switching position of the
valve Meaning
out basic position logical 0 (no signal)
yellow alight Switch position
or
basic position
logical 1 (signal present)
logical 1 but:
compressed air supply not OK
or
pilot exhaust blocked
or
servicing required
lights up red in the starting phase for ap
prox. 2 seconds
during operation
Test phase when power supply has been
switched on
Operating voltage of the valves lies below
the permitted tolerance range (18 ... 30 V DC)
Module fault e.g. undervoltage of the
electronic module (see manual
for CPX I/O modules)
Table4/6: Meaning of the LED display (MPA valve terminal with CPX terminal)
Further instructions on commissioning and diagnosing the
MPA pneumatic modules can be found in the manual for the
CPX I/O modules.