IFM PN72 Series, Operating Instructions Manual

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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�
Display
Status LED
OUT1
Status LED
OUT2
Type of fault *
)
Fault / warning Corrective measures
PARA F Parameter setting outside the
permissible range�
► Repeat parameter setting�
none F Supply voltage too low� ► Check / correct the supply
voltage�
SC
Flashes
Flashes Flashes F Excessive current on
switching outputs OUT1 and
OUT2 **
)
�
► Check switching
outputs for short circuit
or excessive current;
Remove the fault�
SC1
Flashes
Flashes F Excessive current at
switching output OUT1 **
)
�
► Check switching output
OUT1 for short-circuit
or excessive current;
Remove the fault�
SC2
Flashes
Flashes F Excessive current at
switching output OUT2 **
)
�
► Check switching output
OUT2 for short-circuit
or excessive current�
Remove the fault�
Loc W Parameter setting locked via
buttons�
► Unlock buttons (→ 9.1
Parameter setting in
general) →"Locking /
unlocking"�
C�Loc W Parameter setting locked
via pushbuttons, parameter
setting is enabled via IO-Link
communication (→ 9.1) �
► Wait until parameter
setting via IO-Link is
finished�
S�Loc W Setting buttons locked
via parameter software�
Parameter change is rejected
(→ 9.1) �
► Unlocking only possible
via IO-Link interface
/ parameter setting
software�