| abstract |
Modalities of the invention provide a variable frequency drive system and a method for controlling a pump displaced by a motor, with the pump in fluid communication with a fluid system. The drive system and method can provide one or more of the following: an automatic sleep or shutdown mode, broken tube detection, a line fill mode, an automatic start mode, dry operation protection, an interference filter Electromagnetic compatible with a ground fault circuit breaker, compatibility with two-wire and three-wire and three-phase motor, a simple start-up process, automatic key protection, a way to empty or pump out, input / output terminals digital, and removable input and output power terminal blocks. |