IFM PN3 Series, Operating Instructions Manual, Page: 25 / 29

25
UK
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
Type of fault *
)
Fault / warning Corrective measures
none F Supply voltage too low� ► Check / correct the supply
voltage�
SC1
flashing
flashing F Excessive current at
switching output OUT1 **
)
�
► Check switching output ou1 for
short-circuit or excessive current;
Remove the fault�
Loc W Parameter setting locked via
pushbuttons�
► Unlock buttons (→ 9.1 Parameter
setting in general) →"Lock /
unlock"�
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�
OL W Process value too high
(measuring range
exceeded)�
► Check / reduce system pressure
/ select unit with corresponding
measuring range�
UL W Process value too low
(value below measuring
range)�
► Check / increase system
pressure / select unit with
corresponding measuring range�
Err
flashing
F Internal fault / malfunction� ► Contact the manufacturer�
*
)
F = fault
W = warning
**
)
The output remains deactivated as long as the excessive current / short circuit
continues�