44 M OT O R CO N T R O L A N D P R O TE C T I O N U N I T M 1 0X U S E R G U I D E
Stall protection
Stall protection is used to protect the driven
mechanical system from jams and excessive
overload. Stall protection function uses Imax as
the criterion. There are other parameters to be
determined as follows:
Function
Setting range 0=Disabled 1=Enabled
Default value 1
Step value 1
Trip reset mode
Setting range 2=Local 3=Remote 4=Remote and local
Default value 4
Step value 1
Trip level
Setting range 120-800%
Default value 400%
Step value 10%
Trip delay
Setting range 0.0-25.0sec
Default value 0.5sec
Step value 0.1sec
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34 Stall protection
Stall function activates after motor nominal
startup time has elapsed.
The highest measured phase current (ILmax) is
compared against the trip level. When ILmax
remains over the trip level at a time longer than
trip delay, a stall alarm is issued and the contactor
tripped.
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