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Variable frequency drives (VFD) provide speed, torque and direction control for AC motors such as those in conveyors, fans and pumps. Soft starters provide energy-efficient motor control. DC drives provide variable speed control for DC motors, ideal for applications requiring low speed control, torque and power.
Drives and Soft Starters
Category Selection
When motor control requires more flexibility than simple start/stop operation, drives and soft starters can provide speed control, power efficiency and other advanced functionality.
- Variable frequency drives (VFD) enable speed control for 3-phase AC motors such as those in conveyors, fans, pumps and shop tools. In ratings up to 300hp, the diverse lineup includes DURApulse GS series, Ironhorse and WEG brands, with various environmental ratings and control modes.
- Soft starters are used with AC motors to temporarily reduce load and torque during start-up as compared to discrete contactor switching. Soft starters lower energy use and reduce wear and tear on motors and connected mechanical equipment.
- DC drives provide variable speed control for DC motors, ideal for applications requiring low speed control, torque, and power. Speed adjustment is simple, typically using a potentiometer or analog input signal. IronHorse DC drives are available with either DC or AC input voltage input, and in open frame or NEMA 4/12 or 4X enclosed versions.
For part listings and specifications, go to Shop Now.
AC Variable Frequency Drives (VFD)
Newest Additions!
- WEG CFW500 high-performance AC drives in sizes up to 150hp
- WEG higher current 10hp drives with IP20 or IP66/NEMA 4X rating
A wide range of AC variable frequency drives (VFD) is available for motor speed control and other industrial control applications.
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Micro variable frequency drives (VFD) enable speed control for AC motors at an affordable price in a compact footprint.
- The DURApulse GS10 series offers high quality and abundant features at our lowest price point
- WEG CFW100 drives offer high performance and compact size with built-in HMI and PLC
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General purpose variable frequency drives enable speed control for AC motors such as those in conveyors, fans, pumps and material
handling.
- WEG CFW300 AC drives offer high performance and ease-of-use with built-in HMI operator interface and SoftPLC
- DURApulse GS20 high-performance vector control drives provide many standard and advanced functions, all in a compact unit
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High-performance AC drives offer advanced features such as STO, closed-loop vector control and a built-in logic controller.
- WEG CFW500 high-performance drives support closed-loop flux vector control and torque control modes
- DURApulse GS4 series sensorless vector AC drives handle applications up to 300hp
- NEMA 4X-rated WEG CFW500, DURApulse GS20X and IronHorse ACN series drives are suitable for washdown-duty applications. They offer V/Hz, sensorless vector or field oriented vector control up to 30hp.
AC Motor Soft Starters
Solid state soft starters provide many advantages when used instead of electro-mechanical contactors, including reduced shock and starting stress on motors, resulting in an extended motor lifespan.
- Compact WEG SSW05 and Stellar SR22 series offer a reduced footprint for solid state motor control in ratings up to 85A (depending on series). SR22 starters are available for 1- or 3-phase motors.
- Basic WEG SSW07 and Stellar SR35 series provide dependable performance on motor starts and stops, in ratings up to 412A (depending on series) and a selection of trip classes
- Full-featured Stellar SR55 series starters are fully digital, and use thyristors in all three motor phases for controlled reduced voltage motor starting and stopping; available in ratings up to 477A, and AC or DC control voltages
DC Drives
IronHorse DC drives can accommodate from 1/50hp @ 12VDC out (with 12VDC in) up to 3hp @ 180VDC out (with 240VAC in). DC motors and drives can provide several advantages:
- Inexpensive
- Low speed performance
- Low speed power
-
Simple
- DC drives typically use potentiometers for configuration
- No parameters or programming needed (for most models)
- Feature-rich (some models include communications)
- Default programming handles most applications
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