SICK 1094452, Manual, Page: 124 / 156

Fault type Brief description Cause Troubleshooting
E4 Incompatible system
plug The system plug is unsuitable for
the safety laser scanner.
b
Check part number or type code.
b
Replace the system plug.
F1 Current too high at an
OSSD The current is too high at an OSSD.
The limit has been exceeded for cur‐
rent allowed short-term or perma‐
nently.
b
Check the connected switching
element.
F2 OSSD short-circuit to
24 V There is a short-circuit to 24 V at an
OSSD.
b
Check wiring.
F3 OSSD short-circuit to
0 V There is a short-circuit to 0 V at an
OSSD.
b
Check the wiring.
F4 Short-circuit between 2
OSSDs There is a short-circuit between two
OSSDs.
b
Check the wiring.
F5 Short-circuit between
OSSD 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
Check wiring.
F9 General OSSD fault At least one OSSD is showing unex‐
pected behavior.
b
Check the wiring of the OSSDs.
L2 Invalid configuration of
the external device
monitoring (EDM) The configuration of the external
device monitoring (EDM) is invalid.
The configuration is unsuitable for
the wiring.
b
Check whether the external
device monitoring is connected
correctly.
b
Use Safety Designer to check the
configuration.
L3 Fault in the exter‐
nal device monitoring
(EDM) A faulty signal is applied at the
external device monitoring (EDM).
The allowed tolerance time has
been exceeded.
b
Check whether the connectors
are wired correctly and operating
correctly.
L8 Fault in the reset input An invalid signal is applied at a reset
input. The reset signal is applied for
too long.
b
Check the reset pushbutton, the
wiring, and any other compo‐
nents affected.
L9 Short-circuit at the
reset input Exactly the same signal is applied at
a reset input as at another input, an
OSSD or an output. There is possibly
a short-circuit.
b
Check the wiring for cross-cir‐
cuits.
N1 Invalid input signal The signal applied at the control
inputs is not assigned to a monitor‐
ing case. The signal is applied for
longer than the set input delay +1 s.
b
Check the configuration with
Safety Designer.
b
Check the working process of the
machine.
N2 Incorrect switching
sequence The configured switching sequence
was interrupted by the new monitor‐
ing case.
b
Check the machine’s work proc‐
ess.
b
Change the configured switching
sequence monitoring.
N3 Invalid input signal The signal applied at the static con‐
trol inputs does not match the com‐
plementary condition. The signal is
applied for longer than 1 s.
b
Check the control of the control
inputs.
T1 Temperature error The operating temperature of the
safety laser scanner has exceeded
or fallen below the permitted range.
b
Check whether the safety laser
scanner is being operated in
accordance with the permissible
ambient conditions.
W1 Warnings exceed toler‐
ance time The combination of multiple warn‐
ings has resulted in a fault. The
tolerance time of 1 s has been
exceeded as there are multiple
warnings.
b
Use Safety Designer to check
what warnings exist.
11
TROUBLESHOOTING
124 O P E R A T I N G I N S T R U C T I O N S | outdoorScan3 Core I/O 8023152/1G5N/2022-06-28 | SICK
Subject to change without notice