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Variable frequency drives (VFD) enable speed control for three-phase AC motors such as those in conveyors, fans, pumps and shop tools. In ratings up to 300hp, the diverse lineup includes GS series, Ironhorse and WEG brands, with various environmental ratings and control modes. A full line of accessories for each drive family ensures a reliable installation.
AC Variable Frequency Drives (VFD)
Category Selection
Variable Frequency AC Drives - 1/4 HP to 300 HP
- Micro - CFW100, CFW300 Series, GS1 Series
- General Purpose - DURApulse GS20 Series
- High Performance - CFW500 Series, DURApulse GS4 Series
- NEMA 4X - DURApulse GS20X Series - IronHorse ACN Series
AutomationDirect carries a range of AC variable frequency drives (VFD) for motor speed control and other industrial control applications.
- Single phase only, single / three-phase and three phase only AC drives.
- The high quality and low prices make our GS1 series mini AC drives an incredible deal.
- The DURApulse (GS20, GS4 series) sensorless vector AC drives can handle applications from 1 horsepower up to 300 horsepower.
- WEG CFW100 and CFW300 AC drives offer high performance in a reduced compact size and ease-of-use with built-in HMI operator interface and SoftPLC
- WEG CFW500 is a high-performance drive that supports closed-loop flux vector control and torque control modes. Models available in NEMA 4X rated enclosure.
AC Drives Overview and Selection Guide
Micro AC Drives
WEG - CFW100 Drive Units
High-performance VFD in reduced compact size
WEG - CFW100 Drives start at
$129.00
(CFW100A01P6S220G2)
WEG - CFW300 Drive Units
High-performance VFD in reduced compact size
WEG - CFW300 Drives start at
$158.00
(CFW300A01P6S2NB20)
GS1 Series Mini AC Drives
Our most affordable and compact inverter drive
- 1/4 and 1/2 hp, 115 VAC single phase input VFD
- 1/4, 1/2 and 1 hp, 230 VAC single/three-phase input VFD
- 2 hp, 230 VAC 3 phase VFD
GS1 series drive prices start at
$128.00
(GS1-10P2)
General Purpose AC Drives
DURApulse GS20 Series AC Drives
Several speed control modes available: standard V/Hz with pulse input feedback, sensorless vector control (SVC), and ultra precise Field Oriented Vector control (FOC).
- Single-phase 120VAC up to 1hp
- Single-phase/3-phase 230VAC up to 20hp
- Three-phase 460VAC and 575VAC
High-Performance AC Drives
WEG CFW500 AC Drives
Closed-loop flux vector and torque control modes available in sizes up to 60 hp
- 230VAC single-phase 1/4 to 3 hp
- 230VAC three-phase 1/4 to 30 hp
- 460VAC three-phase 1/3 to 60 hp
DURApulse AC Drives
Sensorless vector technology up to 300 hp VFD
- 230V single-phase
- 230V three-phase
- 460V three-phase
NEMA 4X AC Drives
WEG CFW500 IP66 AC Drives
Same closed-loop flux vector technology as the CFW500 IP20 in a NEMA 4X rated enclosure, in sizes up to 20 hp.
- 230VAC single-phase 1/4 to 3 hp
- 230VAC three-phase 1/4 to 10 hp
- 460VAC three-phase 1/3 to 20 hp
IronHorse ACN/ACNND Series AC Drives
ACN series NEMA 4X drives offer standard V/Hz, slip compensation, sensorless vector control (SVC), and torque control. Confgiure these drives with the free, user-friendly VFD Suite configuration software.
- IP66 / NEMA 4X rating
- Three-phase 200-240 VAC, 50/60 Hz, up to 20hp
- Three-phase 380-480 VAC, 50/60 Hz, up to 30hp
DURApulse GS20X NEMA 4X AC Drives
GS20X series NEMA 4X drives offer standard V/Hz with pulse input feedback, sensorless vector control (SVC), and Field Oriented Vector control.
- IP66 / NEMA 4X rating
- Three-phase 200-240 VAC, 50/60 Hz, up to 7.5 hp
- Three-phase 380-480 VAC, 50/60 Hz, up to 10hp
AC Line Reactors
Line reactors have universal mounting feet with multiple mounting slots and can replace most line reactors using existing mounting holes. Output filter units combine line reactor and resistor-capacitor filter circuit to provide protection against voltage wave reflection, especially on long motor cable runs."
Software, Comms & I/O Modules
Drive configuration and programming software allows the user to connect to a VFD from a PC for fast, convenient setup and/or programming of a built-in PLC, and offline storage of (multiple) configuration parameters.
Option cards are available to increase the available I/O or add communications capabilities.
Remote Keypads, Disconnects, Mounting & Accessories
Remote keypads, bezels, cables, backup power supplies, memory modules, DIN rail mounting adapters and other accessories are available to complete the installation of your VFD.
Conduit box kits bolt to the bottom of a VFD to provide conduit entry and a/ NEMA 1 rating without the need to install in a separate enclosure. Flange mounting kits extend the heat sinks on the back of the drive through the rear of the enclosure. EMC shield plates allow motor lead shields to be grounded at the drive.
NEMA 4X disconnect switch provides local on/off control to the GS20X drive.
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