Operating Instructions Chapter 11
C4000 Palletizer Std./Adv.
C4000 Fusion
8012249/YT69/2016-02-25 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 91
Subject to change without notice
Fault diagnosis
11 Fault diagnosis
This chapter describes how to identify and rectify errors and malfunctions during the
operation of the safety light curtain.
You can speed up the fault diagnosis of some frequent faults by checking the status of the
s
ignal output on the safety light curtain on the occurrence of the fault. Instructions can be
found in chapter 4.5 “Application diagnostic output (ADO)” on page 33.
11.1 In the event of faults or errors
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
rectify the malfunction.
The system status lockLout
In case of certain faults or an erroneous configuration, the system can go into the lockEout
system status The 7Esegment display on the safety light curtain then indicates , , ,
or . To place the device back in operation:
Rectify the cause of the fault as per Tab. 24.
Switch the power supply for the C4000 off and back on again (e.g. by unplugging the
system plug and reinserting it).
11.2 SICK support
If you cannot rectify an error with the help of the information provided in this chapter,
please contact your local SICK representative.
11.3 Error displays of the diagnostics LEDs
This chapter explains the meaning of the error displays of the LEDs and how to respond.
You will find an description of the LEDs in chapter 3.3 “Status indicators” on page 24.
Display Possible cause Rectification of the error
Orange LED of receiver
lights up
Weak signal Check the alignment of sender
and receiver.
Check the front screen for
contamination and clean, if
necessary.
Yellow LED of receiver
flashes
Reset required Press the reset button.
Yellow LED of sender
fails to light up
Red and
Green
Neither the red
nor the green
receiver LED
lights up
No operating
voltage, or voltage
too low
Check the voltage supply and
activate, if necessary.
Recommendation
WARNING
LEDs
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