We often receive inquiries for variable frequency drives that are capable of high frequency output. Spindle applications such as CNC equipment generally use a high frequency output, up to 400Hz....
more Category Archives: FAQ VFDs
Derate Three Phase VFD for Single Phase Power
There are many customers who want to derate their three phase Variable Frequency Drive (VFD) for single phase power. Some manufacturers offer products that are designed for single phase input,...
more Inverter Duty Motors VS General Purpose Motors
General purpose AC motors have been around for many years. An inverter-duty motor is a much newer concept that became necessary as motors began to be driven by variable frequency...
more SMV Parameter Setup & High Frequency Output
Setting up SMV Drive Parameters 1. Enter the “edit parameter mode” by: a. With the drive powered up the display should read “Stop”. b. Press the M key once. The...
more Dynamic Brake Selection for Sub-Micro & SMV Series Drives
Dynamic braking is used when an overhauling load causes regeneration from the motor to occur, especially in situations where the required deceleration time to stop the motor cannot...
more FAQ :: VFDs | Are There Things to Consider When Operating 50 Hz Equipment at 60 Hz?
Machinery imported into the United States is often rated at an operating frequency of 50 Hertz. Unless engineered for operation at 60 Hz., this can be problematic for electric motors. This...
more FAQ :: VFDs | Should I Use An Inverted Rated Motor On VFD Applications?
Many electricians apply Variable Frequency Drives (VFDs) to AC Motors that are not inverter rated. Many are not even aware that inverter rated motors exist. Inverter rated motors are not required for inverter applications,...
more FAQ :: VFDs | How Can I Troubleshoot A Variable Frequency Drive On A Network?
Engineering technicians have many nightmare stories when it comes to on-site troubleshooting. In this instance, I was called to help troubleshoot a Closed Loop (Sensorless Vector) Variable Frequency Drive (VFD) on a production line that was...
more FAQ :: VFDs | How Do I Derate Three Phase Inputs For Single Phase Applications?
Often times those using a Variable Frequency Drive (VFD) may find themselves needing to connect a higher horsepower VFD to a single phase input power source. Since most higher horsepower VFDs only accept three phase input as a power...
more VFDs How Do I Calculate RPM For Three Phase Induction Motors?
AC Three Phase Induction Motor RPM is determined by the formula: RPM = (120 * Frequency) / # of poles in the motor Since the number of poles of a three phase induction motor is established...
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