The User Manual of JAC200 Series General Frequency Converter
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Set range
60.0% ~100.0% (Standard bus voltage)
This function means, when the instantaneous power failure or voltage decreases suddenly, the frequency
converter shall compensate the decrease of frequency converter DC bus voltage with load feedback energy
by reducing input rotational speed, so that the frequency converter can be maintained, and it can operate
continually.
If F9-59=1, and the instantaneous power failure or voltage decreases suddenly,, the frequency converter
shall slow down, when to bus voltage return to normal, the frequency converter shall normally speed to the
set frequency and operates. The judgment of whether bus voltage returns to normal or not is based on the
normal bus voltage, and its duration time exceeds the time set by F9-61. If F9-59=2, and the instantaneous
power failure or voltage decreases suddenly, the frequency converter shall decelerate till stop.
Fig. 6-25 The diagram of instantaneous power failure action
F9-63
Off-load protection selection
Default value
0
Set range
0
Invalid
1
Valid
F9-64
Off-load test level
Default value
10.0%
Set range
0.0%
~
100.0% (the rated current of motor )
F9-65
Off-load test time
Default value
1.0s
Set range
0.0s
~
60.0s
If the protection function of Off-load is effective, and the output current of frequency converter is less than