with caution if the change of rotation direction is
disallowed after commissioning.
2: Forbid to run in reverse direction: It can be
used in some special cases if the reverse
running is disallowed.
Advantage of high carrier frequency: ideal
current waveform, little current harmonic wave
and motor noise.
Disadvantage of high carrier frequency:
increasing the switch loss, increasing VFD
temperature and the impact to the output
capacity. The VFD needs to derate on high
carrier frequency. At the same time, the leakage
and electrical magnetic interference will
increase.
Applying low carrier frequency is contrary to the
above, too low carrier frequency will cause
unstable running, torque decreasing and surge.
We have set a proper carrier frequency when the
VFD is in factory. In general, you do not need to
change the parameter.
When the frequency used exceeds the default
carrier frequency, the VFD needs to derate by
To Next Page
Loading...
Need help?
General
