Chapter 4 Operating Instructions
C4000 Palletizer Std./Adv.
C4000 Fusion
30 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012249/YT69/2016-02-25
Subject to change without notice
Configurable functions
4.2 External device monitoring (EDM)
The EDM checks if the contactors actually de-energize when the protective device is
tripped. If you activate external device monitoring, then the C4000 checks the contactors
after each interruption to the light path and prior to the machine restart. The EDM can so
identify if one of the contacts has welded, for instance. In this case …
the error message appears (in the 7Esegment display.
the safety light curtain remains red.
with the internal restart interlock activated, the safety light curtain uses the flashing
LED Yellow to signal “Reset required”.
If the system is unable to change to a safe operational state (e.g. after contactor failure),
the system locks and shuts down completely (lockEout). The 7Esegment display will then
show the error message .
The electrical connection for the external device monitoring is described in chapter 7.4
“External device monitoring (EDM)” on page 77.
You can configure the external device monitoring (EDM) function in the CDS on the
C4000 (receiver).
Note
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