Festo IFB05-03, Manual

Page: 99 / 154

5. Diagnosis and error treatment
5−5
Festo P.BE−VIFB5−03−EN en 0503e
LEDs
green
red
Operating status Error treatment
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.
None
Check the ...
S
operating voltage connection of the
outputs (pin 2), tolerance range
21.6V DC ... 26.4 V)
S
the compressed air supply
S
pilot exhaust channels
Operating voltage not applied Check the operating voltage connec
tion for the electronics (pin 1)
(very fast)
Baud rate setting and/or address se
lector switch setting are not permitted
with the field bus protocol set Check the address/baud rate settings
(1 second i
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
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
out
flashes red
flashes green
lights up green lights up red
Fig.5/3: LED display of operating status (part 1)