Chapter 8 Operating Instructions
UE402
30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8009874/YT67/2016-02-22
Subject to change without notice
Fault diagnosis
8 Fault diagnosis
T
his chapter describes how to identify and remedy errors and malfunctions during the
operation of the UE402.
8.1 What to do in case of faults
Cease operation if the cause of the malfunction has not been clearly identified!
Stop the machine if you cannot clearly identify or allocate the error and if you cannot safely
remedy the malfunction.
The system state lock-out
In case of certain faults or an erroneous configuration, the system can go into the lock>out
state. The 7> segment display on the connected C4000 receiver then indicates , , ,
or . To place the device back in operation:
Rectify the cause of the fault as per Tab. 9.
Switch the power supply to the UE402 off and on again (remove terminal strip I of the
switching amplifier and replace it again).
Switching the power supply to the connected safety light curtain off and on again
(remove the system plug of the C4000 receiver and replace it again).
8.2 SICK Support
If you cannot remedy an error with the help of the information provided in this chapter,
please contact your local SICK representative.
WARNING
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