So you are thinking about adding a variable frequency drive (VFD) to an electric motor in your plant. Great! Variable Frequency Drives are great controls that allow you to adjust the speed of the machine at the push of a button or program it into your automation platform.
But what could this do to your motor? There are a variety of factors to consider before adding a drive to an electric motor, such as:
Motors are designed to operate at a certain speed. If they are designed to operate on A VFD at certain speed ratios, those are listed (Dependent on torque type) on the nameplate. These motors have been tested by the manufacturer and are nameplated to be acceptable for use in those situations. This does not mean a motor that is not namplated for these ratios will not work, you just may want to consider if it designed to operate at a different speed or not.