LEDs Possible cause Troubleshooting
OSSD Field Diagnostics LEDs
1 2 3 4 5 6 7 8
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 29.
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:
invalid signal, unex‐
pected 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 31.
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 98.
O R
ed Ö
R
ed
o Ö
Red
Ö
Red
o o o o o
A wiring fault has
been de
tected.
b
Chec
k the system wiring
for a fault.
b
Make sure that the IO-
link interface was wired
correctly.
b
Switch the voltage sup‐
ply off and back on
again.
O R
ed Ö
Red
Ö
Red
o Ö
Red
o o o o o
Incompatible device
de
tected.
b
F
or a sender-receiver
connection, ensure that
the sender and receiver
devices are compatible,
see "Connection of
sender and receiver",
page 36.
TROUBLESHOOTING 11
8022883/2019-03-07 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex
85
Subject to change without notice
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