Festo CDVI-DN Series Electronic Manual page 75

3. Diagnosis
3.1.2 Fault displays of the LEDs
LED Sequence
PS
ON
OFF
PS
ON
OFF
PL
ON
OFF
PL
ON
OFF
Tab. 3/2: Fault diagnosis LEDs PS and PL
Festo P.BE−CDVI−DN−EN en 0404NH
Fault diagnosis with the LEDs PS and PL
The LEDs PS (Power System) and PL (Power Load) indicate
faults in the power supply.
Colour Operating status
out Operating voltage for the
electronics not applied
green Operating voltage
Electronics
flashes
< 20.4 V
out Load voltage
(for valves and CP outputs)
not applied.
green Load voltage
(for valves and CP outputs)
flashes
< 21.6 V
Fault treatment
Check the power supply of
·
the electronics (pin 1).
Check the power supply of
·
the electronics (pin 1).
Switch power on and then
off again.
Check power supply for the
·
valves (pin 2).
3−5