
Chapter
10
Operating Instructions
UE 440/470
80
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8 010 432/P097/14-03-05
Fault diagnosis
10
Fault diagnosis
10.1
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
remedy the malfunction.
Complete functional test after malfunction remedying!
Carry out a full functional test after a malfunction has been remedied. See Chapter 8.3
"Test notes" on Page 76.
The Lock-out operating status
With certain malfunctions or a faulty configuration, the UE 440/470 enters the safe Lock-
out status. The 7-segment display of the safety controller shows the corresponding error.
To place the device back in operation:
Rectify the cause of the malfunction as per Tab. 26.
Switch the voltage supply of the UE 440/470 off and back on again.
10.2
SICK support
If you cannot remedy a malfunction using the information in this chapter, please contact
your local SICK branch.
If you send in a device for repair, you will receive it back in the delivery state, i.e. not
configured. For this reason, save the configuration(s) of your devices and back up this
data.
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