ABB +N5600 Firmware Instructions page 53

The action (none, warning or fault) taken when the signal exits the allowed operation
area can be selected separately for overload and underload conditions (parameters
79.19 and 79.49 respectively). Each condition also has an optional timer to delay the
selected action (79.18
The diagram below illustrates various underload protection scenarios and possible
responses.
Load signal / Limit
Reference
Underload delay
Underload act
Underload recovery active
Underload boost active
Underload drop active
Warning
Shutdown
The diagram below illustrates various overload protection scenarios and possible
responses.
Load signal / Limit
Reference
Overload delay
Overload act
Overload safe speed active
Warning
Fault
Shutdown
and 79.48).
Underload warning
Fault
Delay
time
Overload warning
Delay
time
ESP program features 53
Warning + Shutdown
Delay
time
Warning + Shutdown
Delay
Delay
time
time
Fault
Delay
time
Fault