VFD Supply Sag
VFD Supply Sag
(OP)
If a VFD's supply voltage sags for several seconds in the order of 10%-15%, and the VFD is previously at full load, rated voltage and 60 Hz speed, then what is the typical drive response. Will it shut down on low voltage or overcurrent? This is a common problem.





RE: VFD Supply Sag
The answer to this question lies in how the drive is set up. Most drives have both time and value thresholds that have to be met before it will shut down.
These should be user programmable so that nuisance shutdowns can be avoided.
RE: VFD Supply Sag
RE: VFD Supply Sag
RE: VFD Supply Sag