Festo CPV-DI01 Manual page 134

5. Diagnosis with the Festo field bus
5.1.3 LEDs for the status display of the valve solenoid coils
LED Colour
out
yellow
lights up
Fig. 5/5: LEDs for the status display of the valve solenoid coils
5-6
There is a yellow LED for each valve solenoid coil (see
Fig. 5/1). This LED indicates the switching status of the valve
solenoid coil.
switch position
valve solenoid coil
Basic position
– switch position
or
– basic position
Please note
If there is no valve coil, the assigned LED will not indicate
control of the output.
Error treatment
logical 0 (no signal)
logical 1 (signal present)
logical 1 but:
– load voltage of the valves lies
below the permitted tolerance
range ( < 20.4 V DC)
or
– compressed air supply not
correct.
or
– pilot exhaust blocked
or
– servicing required
Festo P.BE-CP-DI01-EN en 0007a