Festo CPA-GE-ASI-4E4A-Z Serie Manual Del Usuario página 19

LED display
ASI LED Fault LED
on off
off off
flashes on
on flashes
flashes flashes
on on
AUX/PWR
on
off
Status LEDs
on
off
Note
The AS-Interface has an integrated watchdog function
which resets the outputs if there is a bus communica-
tion failure.
Festo CPA...-ASI-4E4A-Z 1108a English
Meaning
AS-Interface voltage applied, no fault
No AS-Interface voltage
AS-Interface address not set (= 0)
With additional power supply:
– Short circuit/overload at input
Without additional power supply:
– Short circuit/overload at input or overload
at valves
With additional power supply:
– Additional power supply not applied or
undervoltage (possibly valves do not
switch), periphery fault
Bus communication failed (watchdog expired)
Meaning
Additional power supply applied
Additional power supply is missing or is less
than approx. 6 V
Meaning
1 signal at input/output
0 signal at input/output
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