Inovance MD280NT2.2GB - Page 148

MD280 User Manual Description of Function Codes
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Function Code Parameter Name Setting Range Default
FB-12
Judging voltage of power dip ride-
through action
60.0%–100.0% 80.0%
If the power dip ride-through function is enabled, when the bus voltage is lower than the
value of FB-12, the AC drive reduces the running frequency based on the power dip ride-
through frequency decline rate set in FB-10. When the bus voltage rises to the value of
FB-12 and remains such state for the time set in FB-11, the AC drive restores to the set
frequency.
If the bus voltage does not rise to the value of FB-12, the AC drive keeps reducing the
running frequency to 0 and then stops.
If FB-10 is set to a small value, the load feedback energy is small and the low-voltage
compensation is not effective. If FB-10 is set to a very large value, the load feedback energy
is large, which may cause overvoltage protection. Set this parameter properly based on the
inertia and load.
Figure 6-26 Power dip ride-through running
Voltage V
Bus voltage
FB-12
Output
frequency Hz
Set
frequency
FB-11
FB-10
Acceleration time 1 or 2
Time t
Time t
Function Code Parameter Name Setting Range Default
FB-13 Fault auto reset times 0–10 0
It is used to set the times of fault auto resets if this function is used. After the value is
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time reached.
 If manual reset is performed, the fault auto reset time is cleared to 0.
 The auto reset times of undervoltage faults are not counted in this parameter.
Function Code Parameter Name Setting Range Default
FB-14 DO action during fault auto reset
0: No
1: Yes
0
It is used to decide whether the DO acts during the fault auto reset if the fault auto reset
function is selected.
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