Table 6: Fault indicator on the sender
LED Possible cause Troubleshooting
PWR ERR
o o
No operating voltage or operating
v
oltage is too low or internal fault
b
Chec
k the voltage supply, see
"Technical data", page 60.
b
Switch the voltage supply off and
then on again.
b
If the fault persists, replace the
sender, see "Ordering informa‐
tion", page 68.
o Ö Red
The voltage was too high when oper‐
a
ting the sender.
b
Chec
k the voltage supply, see
"Technical data", page 60.
b
Replace the sender, see "Order‐
ing information", page 68.
O Yellow Ö Red
Fault in the supply voltage
b
Check the voltage supply and the
power supply unit, see "Technical
data", page 60.
b
Switch the voltage supply off and
then on again.
b
If the fault persists, replace the
defective components, see
"Ordering information",
page 68.
Ö Yellow Ö Red
The sender identified an internal
f
ault.
b
S
witch the voltage supply off and
then on again.
b
If the fault persists, replace the
sender, see "Ordering informa‐
tion", page 68.
o LED of
f. Ö LED flashes. O LED illuminates.
Receiver
P
osition of LEDs: see "Receiver indicators", page 13.
Table 7: Fault indicator on the receiver
Light emitting diodes Possible cause Troubleshooting
OSSD ERR Alignment quality
1 2 3 4
O R
ed Ö Red Ö
Blue
o o o
An internal fault has occurred.
b
Switch the voltage supply
off and then on again.
b
If the fault persists, replace
the receiver, see "Ordering
information", page 68.
O Red Ö Red o Ö
Blue
o o
Fault in the supply voltage
b
Check the voltage supply
and the power supply unit,
see "Technical data",
page 60.
b
Switch the voltage supply
off and then on again.
b
If the fault persists, replace
the receiver, see "Ordering
information", page 68.
TROUBLESHOOTING 10
8017023/14Q6/2020-04-27 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Ex
57
Subject to change without notice