Eaton easySafety Manual page 381

02/16 MN05013001Z EN
Contacts
The ES..QS contact enables hazardous movement in the
safety circuit diagram. It is closed as long as the emergency-
stop switch has not been triggered.
If the ES..ER contact is wired in the standard and/or safety
circuit diagram, it indicates the presence of an error by
closing.
• Timeout of discrepancy time
• With 2-channel operation, only 1 channel opens and
closes.
Contact Function
Enable (contact closed -> Emergency-stop
ES..QS
switch not triggered)
Error message (contact closed -> Error)
ES..ER
Memory requirement
The ES function block requires 28 bytes of memory.
Operation of the function block
If all conditions for safe operation are fulfilled, the enable
contact ES..QS is closed and enables operation.
If one of the emergency-stop channel coils drops out, the
enable is removed, the enable contact ES..QS opens and the
hazardous movement can be stopped.
Error detection and acknowledgement
The emergency-stop function block detects the timing out of
the discrepancy time.
Error
Timeout of discrep-
ancy time DT
ES, Emergency-stop
Error acknowledgement
2-channel operation: dropping out of
ES..I1 and ES..I2
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