Fault type Brief description Cause Troubleshooting
D5 Speed limit exceeded The speed is outside the configured
s
peed range. The signal is applied
for longer than 1 s.
b
Chec
k the configuration with
Safety Designer.
b
Check the working process of the
machine.
b
Check speed source.
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 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.
E3 Fault in the system plug The system plug has an internal
er
ror.
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 connected switching ele‐
ment.
F2 OSSD short-circuit to
24 V
There is a short-circuit to 24 V at an
O
SSD.
b
Chec
k wiring.
F3 OSSD short-circuit to
0 V
There is a short-circuit to 0 V at an
O
SSD.
b
Chec
k wiring.
F4 Short-circuit between 2
O
SSDs
There is a short-circuit between 2
OSSDs.
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
Check the configuration with
Safety Designer.
L3 Fault in the external
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 contactors
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.
L9 Short-circuit at the
r
eset input
Exactly the same signal is applied at
a reset input as at another input, an
OSSD or an output. There may be a
short-circuit.
b
Chec
k wiring for cross-connec‐
tions.
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O P E R A T I N G I N S T R U C T I O N S | nanoScan3 I/O 8024596/15VP/2019-11-15 | SICK
Subject to change without notice