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.
DANGER
Hazard due to unexpected starting of the machine
b
When any work is taking place, use the protective device to secure the machine or
to ensure that the machine is not switched on unintentionally.
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
Do not carry out any repairs on the device components.
b
Do not modify or manipulate device components.
b
Apart from during the procedures described in this document, the device compo‐
nents must not be opened.
NOTE
If you cannot remedy the fault with the help of the information provided in this chapter,
please contact your respective SICK subsidiary.
8.2
Troubleshooting
Perform one of the following steps in the event of an error:
b
Check voltage supply.
b
Check cables.
b
Check alignment of safety switch and actuator.
b
Check ambient conditions (e.g., interfering RFID frequencies or magnetic fields,
distances to other safety switches).
NOTE
If a safety switch has a fault in a cascade with an end connector, the OSSDs of all
safety switches between the safe evaluation unit and the safety switch concerned
switch into the OFF state.
TROUBLESHOOTING
8
8020169/ZJN1/2018-03-21 | SICK
O P E R A T I N G I N S T R U C T I O N S | MLP1
31
Subject to change without notice
