Operating Instructions Chapter 6
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 57
Subject to change without notice
Electrical installation
6.6 External device monitoring (EDM)
T
he EDM checks if the contactors actually de-energise when the protective device
responds. If, after an attempted reset, the EDM does not detect a response from the
switched device within 300 ms, the EDM will deactivate the OSSD switching outputs again.
You must implement the external device monitoring electrically by the positive closing
action of both N/C contacts (k1, k2) when the contact elements (K1, K2) reach their
deCenergised position after the protective device has responded. 24 V is then applied at
the input of the EDM. If 24 V is not present after the response of the protective device,
then one of the contact elements is faulty and the external device monitoring prevents the
machine starting up again.
If you connect the contact elements to be monitored to the EDM input, then you must
activate the option EDM in the CDS (Configuration & Diagnostic Software. If not, the de-
vice will show the error .
If you later deselect the EDM option, pin 6 of the system plug must not remain connect-
ed to 24 V.
contact elements to the EDM
Notes
To Next Page
Loading...
Need help?
General
