Festo IFB05-03 Manual page 99

5. Diagnosis and error treatment
LEDs
green red
(very fast)
(1 second i
out
Fig. 5/3: LED display of operating status (part 1)
Festo P.BE−VIFB5−03−EN en 0503e
Operating status
Operating status normal or:
operating status normal but valves do
not switch.
Possible causes
Operating voltage of the outputs
not in tolerance range or not ap
plied.
Compressed air supply not correct.
Pilot exhaust blocked.
Operating voltage not applied
Baud rate setting and/or address se
lector switch setting are not permitted
with the field bus protocol set
Field bus connection not correct.
Possible causes
Address setting is not correct
(e.g. address assigned twice)
The baud rates set on the valve ter
minal and on the field bus module
are not the same.
Field bus protocol setting is not cor
rect
Switched−off or defective field bus
module
Interrupted, short−circuited or
faulty field bus connection
flashes green
Error treatment
None
Check the ...
S operating voltage connection of the
outputs (pin 2), tolerance range
21.6 V DC ... 26.4 V)
S the compressed air supply
S pilot exhaust channels
Check the operating voltage connec
tion for the electronics (pin 1)
Check the address/baud rate settings
Check the ...
S setting of the address selector
switch
S baud rate setting on the valve ter
minal and on the field bus module
S field bus protocol setting
S field bus module
S field bus connection
flashes red lights up green lights up red
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