Please suggest me that may I bypass the VSD of NIRVANA IR compressor?
May you? Yes, you may. Should you? That is a question for Ingersol Rand. Before VFDs ever existed, compressors would often run continuously and a valve would load and unload them based on the air needs. After implementing VFDs, it's possible that the compressor is not designed to run that way. Only the maker of the compressor will know that answer.
anyone using nirvana will confront the problem of motor burns and vsd problems. All lies in the technology. PM motor magnets deteriorates very quickly as they run due to temperature they run.
You can buy a standard motor equipped compressor at a price of nirvana motor with 10 year warranty on it.