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Light emitting diodes
Possible cause
Troubleshooting
OSSD
ERR
Alignment quality
1
2
3
4
O
Red
Ö
Red
o
o
Ö
Blue
o
The receiver has recognized
beams from several senders.
b
Check the distance to send‐
ers of the same type.
Make sure that beams from
another sender cannot hit
the receiver,
against interference from
systems in close proximity
to each other", page 20
b
Switch the voltage supply
off and then on again.
O
Red
Ö
Red
o
o
o
Ö
Blue
A fault or unexpected state was
identified on the OSSDs of the
system connection (e.
g., over
voltage, short-circuit to HIGH or
short-circuit to LOW, cross-cir‐
cuit, permissible load capacity
exceeded)
b
Check the system wiring
for a fault. Make sure that
the OSSDs have been wired
correctly,
b
Switch the voltage supply
off and then on again.
b
If the fault persists, replace
the defective components,
see "Ordering information",
page 67
.
O
Red
Ö
Red
o
Ö
Blue
o
Ö
Blue
Permanent error in the voltage
supply.
b
Replace device,
o
LED off.
Ö
LED flashes.
O
LED illuminates.
TROUBLESHOOTING
10
8025644/19Z2/2021-03-09 | SICK
O P E R A T I N G I N S T R U C T I O N S | C4-RD
59
Subject to change without notice