Chapter " Operating Instructions
28 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8 009 874/31-03-03
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This chapter describes how to identify and remedy errors and malfunctions during the
operation of the UE 402.
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Stop the machine if you cannot clearly identify or allocate the error and if you cannot safely
remedy the malfunction.
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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 C 4000 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 UE 402 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 C 4000 receiver and replace it again).
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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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