I have a VSD that has suffered many problems basically it cannot handle the sometimes large upset currents from the load (rapid changes in load conditions) Recently I had a very knowledgeable gentlemen visit me. He says that perhaps we can reduce the effect of some of the problems through the...
So I have a reciprocating refrigeration compressor that is attached to a 250kW motor. For various reasons it has been decided that the compressor should no longer be run at 1480rpm and that it should be stepped down to 1000rpm. For various reasons I ended up with a drive which I believe is too...
I have a 2 VSD’s which are Leroy Somer UMV3301’s They are described in the literature as being ‘Open or Closed Loop Flux Vector Controller’ Simply what is the difference between Open and Closed? What are the implications of running the drives in V/f ratio mode? The drives have been set up by the...
I have a 250kW motor connected to a process. The process will only use about 180kW absorbed power. I have a 200kW Variable Speed Drive which I want use to control this motor. Can I successfully pull this off. If so what of the various motor data that is needed by the VSD will I have to alter for...
