Fault type Brief description Cause Troubleshooting
C2 Incompatible configura‐
t
ion
The configuration in the system plug
does not match the device’s func‐
tionality.
b
Chec
k device variant.
b
Replace or reconfigure the
device.
C3 Incompatible firmware The configuration in the system
plu
g does not match the device’s
firmware version.
b
Chec
k the firmware version of
the device.
b
Replace or reconfigure the
device.
E1 Fault in the safety laser
sc
anner
The safety laser scanner has an
internal fault.
b
P
erform a device restart using
the display or Safety Designer or
interrupt the voltage supply for at
least two seconds.
b
Replace the safety laser scanner
and send it to the manufacturer
for repair.
E2 Fault in the system plug The system plug has an internal
f
ault.
b
P
erform a device restart using
the display or Safety Designer or
interrupt the voltage supply for at
least two seconds.
b
Replace the system plug.
E3 Fault in the system plug The system plug has an internal
f
ault.
b
P
erform a device restart using
the display or Safety Designer or
interrupt the voltage supply for at
least two seconds.
b
Replace the system plug.
E4 Incompatible system
plu
g
The system plug is unsuitable for
the safety laser scanner.
b
Chec
k part number or type code.
b
Replace the system plug.
F1 Current too high at an
O
SSD
The current is too high at an OSSD.
The limit has been exceeded for cur‐
rent allowed short-term or perma‐
nently.
b
Chec
k the connected switching
element.
F2 OSSD short-circuit to
24 V
There is a short-circuit to 24 V at an
O
SSD.
b
Chec
k the wiring.
F3 OSSD short-circuit to
0 V
There is a short-circuit to 0 V at an
O
SSD.
b
Chec
k the wiring.
F4 Short-circuit between 2
O
SSDs
There is a short-circuit between two
OSSDs.
b
Chec
k the wiring.
F5 Short-circuit between
O
SSD and universal
input or universal I/O
There is a short-circuit between
an OSSD and a universal input or
between an OSSD and a universal
I/O.
b
Chec
k wiring.
F9 General OSSD fault At least one OSSD is showing unex‐
pec
ted behavior.
b
Chec
k the wiring of the OSSDs.
L2 Invalid configuration of
t
he external device
monitoring (EDM)
The configuration of the external
device monitoring (EDM) is invalid.
The configuration is unsuitable for
the wiring.
b
Chec
k whether the external
device monitoring is connected
correctly.
b
Use Safety Designer to check the
configuration.
L3 Fault in the exter‐
nal de
vice monitoring
(EDM)
A faulty signal is applied at the
external device monitoring (EDM).
The allowed tolerance time has
been exceeded.
b
Chec
k whether the connectors
are wired correctly and operating
correctly.
L8 Fault in the reset input An invalid signal is applied at a reset
in
put. The reset signal is applied for
too long.
b
Chec
k the reset pushbutton, the
wiring, and any other compo‐
nents affected.
TROUBLESHOOTING 12
8025870/2020-09-04 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 Core I/O
135
Subject to change without notice