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Safety function blocks
400
02/16 MN05013001Z EN
Contacts
The LC..QS contact enables hazardous movement in the
safety circuit diagram. It closes if the light curtain is not trig-
gered.
If the LC..ER contact is wired in the standard and/or safety
circuit diagram, it indicates the presence of an error by
closing.
Memory requirement
The LC function block requires 28 bytes of memory.
Operation of the function block
The ESPE triggers a switch off command when there is an
intervention in the hazardous area, the coils LC..I1 and LC..I2
drop out. The enable contact LC..QS opens and the
hazardous movement can be stopped.
Error detection and acknowledgement
The light curtain function block detects the timing out of the
discrepancy time.
General information on Errors and how the easySafety reacts
to them is provided in section “Diagnostics using the ER
contact” on page 622.
Contact
Function
LC..QS
Enable (contact closed -> light curtain not trig-
gered)
LC..ER
Error message (contact closed -> Error)
Error
Error acknowledgement
Timeout of discrep-
ancy time DT
Dropping out of LC..I1 and LC..I2
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