Festo IFB11-03, Electronic Manual

Page: 127 / 214

5. Diagnosis and error treatment
5−5
Festo P.BE−VIFB11−03−EN en 0503g
The tables below show how the various operating states are
represented by the LEDs.
LEDs Sequence Operating status Error treatment
POWER−LED
ON
OFF
Operating voltage applied None
ON
OFF
Operating voltage not applied Check the operating voltage sup
ply for the electronics (pin 1)
BUS POWER −LED
ON
OFF
Operating voltage applied None
ON
OFF
Operating voltage not applied Check the operating voltage con
nection for the electronics
(bus plug pin 2 and pin 3)
MOD/NET STATUS−LED
ON
OFF
Operating status normal, data
exchange running or:
Operating status normal, but
valves do not switch.
Possible causes
Compressed air supply not OK.
Pilot exhaust blocked None
Check the ...
compressed air supply
pilot exhaust channels
OFF
ON
Lights up once after switching
on (LED test)
Valve terminal ready for data
exchange, but not yet
initialised by master after
switching on
None
Start communication
ON
OFF
only with Selectron/Philips
Valve terminal in standby
operation
Start communication
OFF
flashes red
flashes green
lights up green lights up red
Fig.5/3: Part 1 LED error messages