Service manual

www.enc.net.cn/en Tel/Fax:[phone] Detailed function description
108
F9.09
Automatic current
limit level
Range: 110－200(%) 150(%)
F9.10
Frequency descending
rate during current
limiting
Range: 0.00－99.99Hz/s 10.00Hz/s
F9.11
Automatic current
limiting action selection
Range: 0, 1 0
By automatic current limiting function the inverter can limit load current not to
exceed automatic current limiting level set by F9.09 to avoid tripping out for
failure caused by rushing current. This function is especially suitable for some
biggish inertia or acutely changing load occasion.
Automatic current limiting (F9.09) defines current threshold value of automatic
current limiting action, its value is the percentage relative to inverter rated current.
Frequency descending rate during current limiting (F9.10) defines adjusting
rate to output frequency during automatic current limiting action.
If frequency descending rate during automatic current limiting F9.10 is too
small，inverter isn’t easy to get rid of automatic current limiting state which may
cause overload failure finally；If descending rate F9.10 is too big, the inverter may
be in generating state for long time which will cause overvoltage protection.
Automatic current limiting function is effective in accelerating decelerating
state and whether it’s effective in constant speed run state is determined by
automatic current limiting action selection (F9.11).
F9.11=0 indicates that automatic current limiting is ineffective during constant
speed running；
F9.11=1 indicates that automatic current limiting is effective during constant
speed running；
Output frequency may varies during automatic current limiting action，so
automatic current limiting function is not suitable for occasion demanding stable
output frequency during constant speed run.
6.11 Failure record function parameter group: Fd
Fd.00 Previous one time failure record Range: 0~23 0
Fd.01 Previous two time failure record Range: 0~23 0
Fd.02 Previous three time failure record Range: 0~23 0
Fd.03 Previous four time failure record Range: 0~23 0
Fd.04 Previous five time failure record Range: 0~23 0
Fd.05 Previous six time failure record Range: 0~23 0