10�2 Self-Diagnostics / Fault Indications - IFM PN72 Series Operating Instructions Manual

10.2 Self-diagnostics / fault indications
The unit has many self-diagnostic options�
• It monitors itself automatically during operation�
• Warnings and faults are displayed (even if the display is deactivated), in
addition they are available via IO-Link�
PARA
none
SC Flashes Flashes F Excessive current on
Flashes
SC1 Flashes
Flashes
SC2
Flashes
Loc
C�Loc
S�Loc
28
F Parameter setting outside the
permissible range�
F Supply voltage too low�
switching outputs OUT1 and
OUT2 **
F Excessive current at
switching output OUT1 **
Flashes F Excessive current at
switching output OUT2 **
W Parameter setting locked via
buttons�
W Parameter setting locked
via pushbuttons, parameter
setting is enabled via IO-Link
communication (→ 9.1)�
W Setting buttons locked
via parameter software�
Parameter change is rejected
(→ 9.1)�
Fault / warning
�
)
�
)
�
)
Corrective measures
► Repeat parameter setting�
► Check / correct the supply
voltage�
► Check switching
outputs for short circuit
or excessive current;
Remove the fault�
► Check switching output
OUT1 for short-circuit
or excessive current;
Remove the fault�
► Check switching output
OUT2 for short-circuit
or excessive current�
Remove the fault�
► Unlock buttons (→ 9.1
Parameter setting in
general) →"Locking /
unlocking"�
► Wait until parameter
setting via IO-Link is
finished�
► Unlocking only possible
via IO-Link interface
/ parameter setting
software�