Festo MPA-ASI Series, Manual

Page: 120 / 208

4. Commissioning
4−14
Festo P.BE−MPA−EN en 0802c
MPA−S valve terminal with CPX terminal or
CPImodule
The two−colour LEDs on th evalves 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
module.
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
approx. 2 seconds
During operation
test phase when power supply has been
switched on voltage
see Electronics manual for the MPA
pneumatic module
Tab.4/6: Meaning of the LED display (MPA−S valve terminal with CPX terminal or
CPImodule)
Further instructions on commissioning and diagnosing the
MPA pneumatic modules can be found in the electronics man
ual for the electronics manual for these modules (see system
manual for your CPX terminal, table Manuals on the CPX
terminal").