This article compares three schemes of fan control used on large air conditioning and refrigeration condensers. The first scheme is step control; the second is a hybrid with a VFD on only one bank of ...

For motors controlled by a variable frequency drive (VFD), the control method used in large part determines a motor’s efficiency and performance in an application.

We have looked here at some of the basics of VFD control over serial communications, such as start-and-stop and fault reset capabilities. In addition, we have seen that mining the data transmitted ...

Explore the differences and similarities between soft starters and VFDs with regard to motor speed control, cost, performance parameters and tuning capabilities, and for which ...

From enhanced energy efficiency and improved process control to reduced mechanical stress, noise reduction and motor protection, the operational advantages of variable frequency drives are ...

Flow control It becomes easier to understand the specific amount of savings involved in VFD applications by examining the underlying mathematical relationships between variables such as pressure ...

Five Large AWG Symmetrical Variable Frequency Drive (VFD) cables and five Signal Brake Pair VFD cables have been added to the vendor’s line of flexible VFD cables for industrial AC motor drive ...

Pump speed is modulated to adjust IP and HP flows in coordination with the feedwater valves as follows: Control of VFD and feedwater valves applies regardless of single- or three-element level ...