One of the more common problems seen in our Variable Frequency Drive (VFD) repair division is the failure of the IGBT (Insulated Gate Bi-polar Transistor) power section modules. If the Variable Frequency Drive (VFD) is blowing...
more
Tag Archives: variable frequency drive
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...
more
FAQ :: VFDs | How Does A Variable Frequency Drive Work?
An AC Variable Frequency Drive (VFD) is commonly referred to as an “Inverter”. This is because of the way a VFD works. The following details the inner workings of a VFD: Alternating Current (AC) power is...
more
FAQ :: VFDs | How Do I Pick A Variable Frequency Drive for My Application?
When applying a Variable Frequency Drive (VFD) to a new or existing application there are many factors to consider prior to making a firm decision on what type of Variable Frequency Drive (VFD) should...
more
FAQ :: VFDs | What Is A Variable Frequency Drive (VFD)?
Variable Frequency Drives (VFDs) are electronic devices used to control the speed of an Alternating Current Motor (AC Motor). Variable Frequency Drives (VFDs) are also commonly known as adjustable frequency...
more