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 plug
doe
s 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 safety laser
sc
anner
The safety laser scanner has an
internal error.
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
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.
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.
N1 Invalid input signal The signal applied at the control
in
puts is not assigned to a monitor‐
ing case. The signal is applied for
longer than the set input delay +1 s.
b
Chec
k the configuration with
Safety Designer.
b
Check the working process of the
machine.
N2 Incorrect switching
seq
uence
The configured switching sequence
was interrupted by the new monitor‐
ing case.
b
Chec
k the machine’s work
process.
b
Change the configured switching
sequence monitoring.
N3 Invalid input signal The input signal for switching
be
tween monitoring cases received
via the network is invalid. The invalid
signal is applied for longer than 1 s.
b
Chec
k the control over the net‐
work.
N4 Incorrect activation of
t
he control inputs via
the network
The input signal for activating
switching between monitoring cases
received via the network is invalid.
The invalid signal is applied for
longer than 1 s.
b
Chec
k the control over the net‐
work.
N5 Invalid input signal The input signal for switching
be
tween monitoring cases received
via the network is invalid. The invalid
signal is applied for longer than 1 s.
b
Chec
k the control over the net‐
work.
TROUBLESHOOTING 11
8021913/15ZW/2019-11-14 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 – EFI-pro
143
Subject to change without notice
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