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VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. A variable-frequency drive consists of the following three main sub-systems: AC motor, main drive controller assembly, and drive/operator interface.
Understand the Features of AC Drives
Identify the VFD components
Identify the types of VFDs
Recognize the applicable standards
Understand how a VFD works
Know VFD Manufacturers’ Models
Understand Aftermarket Options
Recognize the key selection criteria)
Source sink Concept of PLC