8
Troubleshooting
8.1
Safety
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Immediately shut the machine down if the behavior of the machine cannot be
clearly identified.
b
If a machine fault cannot be definitively determined or safely rectified, immediately
shut the machine down.
b
Secure the machine so that it cannot switch on unintentionally.
NOTE
Additional information on troubleshooting can be found at the responsible SICK sub‐
sidiary.
8.2
Fault indicators
Table 9: Fault indicators
LED STATE
Possible cause
Corrective measure
Green
Red
o
o
No supply voltage
•
Switch on the supply voltage.
o
Ö
(4 Hz)
Internal error
•
Switch the voltage supply off and
on.
•
If the error occurs again, the sen‐
sor is defective. Replace sensor.
Supply voltage too high or
too low
•
Check the supply voltage.
o
Ö
(1 Hz)
External error
•
Check wiring for cross-circuit and
short-circuit.
•
Switch the voltage supply off and
on.
•
If the error occurs again, the sen‐
sor is defective. Replace sensor.
8
TROUBLESHOOTING
22
O P E R A T I N G I N S T R U C T I O N S | IME2S
8023341/14TD/2019-08-08 | SICK
Subject to change without notice