LEDs Possible cause Troubleshooting
OSSD Field Diagnostics LEDs
1 2 3 4 5 6 7 8
O R
ed Ö
Red
o Ö
Red
o o o o o o
Fault in the voltage
suppl
y.
b
Chec
k the voltage sup‐
ply and the power sup‐
ply unit, see "Technical
data", page 79.
b
Switch the voltage sup‐
ply off and back on
again.
b
If the fault continues
to persist, replace the
receiver, see "Ordering
information", page 85.
O Red Ö
Red
o Ö
Red
o Ö
Red
o o o o
Permanent error in
t
he voltage supply.
b
R
eplace device, see
"Ordering information",
page 85.
O Red Ö
Red
o Ö
Red
Ö
Red
Ö
Red
o o o o
General error in the
conf
iguration.
b
Chec
k configuration set‐
tings including the per‐
mitted combination of
functions.
b
Make sure that the
correct system plug is
used.
b
Reset device to factory
settings.
O R
ed Ö
Red
o o Ö
Red
o o o o o
The receiver has rec‐
o
gnized beams from
several senders.
b
Chec
k the distance to
senders of the same
design.
b
Check the beam coding
of the receiver and sys‐
tems in close proximity.
b
Ensure that beams from
another sender cannot
hit the receiver. (Excep‐
tion: One of the two sys‐
tems uses code 1 and
the other uses code 2),
see "Protection against
interference from sys‐
tems in close proximity
to each other", page 27.
b
Switch the voltage sup‐
ply off and back on
again.
O R
ed Ö
Red
o o o Ö
Red
o o o o
A wiring fault has
been ident
ified at the
OSSDs or at an input.
E.g., at an OSSD:
overvoltage, short-cir‐
cuit, cross-circuit,
permissible load
capacity exceeded.
E.g., at an input: inva‐
lid signal, unexpected
signal.
b
Chec
k the system wiring
for a fault. Make sure
that the OSSDs and
inputs have been wired
correctly, see "Integra‐
tion in electrical con‐
trol", page 30.
b
Switch the voltage sup‐
ply off and back on
again.
b
If the fault continues
to persist, replace the
defective components,
see "Ordering informa‐
tion", page 85.
TROUBLESHOOTING 11
8027140/2021-11-04 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4
75
Subject to change without notice
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