10
Troubleshooting
10.1
Safety
DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of
non-observance.
b
Immediately shut the machine down if the behavior of the machine cannot be
clearly identified.
b
Immediately put the machine out of operation if you cannot clearly identify or
allocate the fault and if you cannot safely remedy the fault.
b
Secure the machine so that it cannot switch on unintentionally.
NOTE
Additional information on troubleshooting can be found at the responsible SICK subsid‐
iary.
10.2
Diagnostic LEDs
10.2.1
Fault indicators
Overview
In the event of a fault, the type of fault is indicated by the LED display on the sender or
receiver.
Sender
Position of the LEDs:
see "Sender displays", page 12
Table 8: Fault indication on the sender
LED
Possible cause
Troubleshooting
PWR
ERR
o
o
No supply voltage or supply voltage
is too low or internal fault
b
Check the voltage supply,
b
Switch the voltage supply off and
back on again.
b
If the fault persists, replace the
sender,
.
o
Ö
Red
The voltage was too high when oper‐
ating the sender.
b
Check the voltage supply,
b
Replace the sender,
O
Yellow
Ö
Red
Fault in the supply voltage
b
Check the voltage supply and the
power supply unit,
.
b
Switch the voltage supply off and
back on again.
b
If the fault continues to per‐
sist, replace the defective com‐
ponents,
.
TROUBLESHOOTING
10
8014276/1DCM/2022-10-27 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTec2 Core
53
Subject to change without notice
