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High-performance variable frequency drives (VFD) enable speed control for three-phase AC motors such as those for conveyors, fans, pumps, HVAC and material handling. Drives in sizes up to 300hp offer advanced features such as STO, closed-loop vector control and a built-in logic controller.
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High-Performance AC Drives
Category Selection
DURApulse GS30 Overview Video
Toshiba AS3 Overview Video link
WEG CFW500 Overview Video
DURApulse GS4 Overview Video
High-performance AC drives are top-of-the-line drives that are usually specified when a high degree of precision in speed control is required, when full torque is needed through the speed range of the motor (full torque available at very low or zero speeds), or if a torque control mode is required (controlling and maintaining torque as opposed to speed). These drives carry a higher price tag but provide these added benefits:
- High-precision speed control - High-performance drives support very tight speed control tolerances when this is important to an application with or without encoder feedback.
- Full torque throughout the motor's speed range - High-performance VFDs always support some type of vector speed control. Sometimes this is sensorless vector, which is an open-loop system that still allows for full torque from base speed down to very low speeds; many models support closed-loop flux vector speed control which will support 100% of the drive's available torque from base speed down to zero speed.
- Torque control - Applications such as winders and tensioners, where the motor's torque needs to be varied and controlled in lieu of motor speed, require a torque control mode. High-performance AC drives offer this control method.
- High tech features - Most modern AC drives offer features such as dynamic braking and an integrated PLC as well as some communications capabilities. High-performance VFDs take this to a new level with more powerful PLCs, advanced networking capabilities, and safety features such as Safe Torque Off (STO) and Safe Stop 1 (SS1).
For part listings and specifications, go to Shop Now
High-performance Drives Overview
DURApulse GS30 AC Drives
DURApulse GS30 drives are high-performance drives that support several control modes including sensorless vector control, closed-loop flux vector control, and torque control modes in a compact package. The GS30 drive expands the DURApulse family by adding internal tension control loop expanded parameter sets for greater versatility, as well as optional EtherCAT and single- or dual-port EtherNet/IP communication cards. These drives support up to four (4) independent induction motor (IM) parameter sets or control of a single AC permanent magnet (PM) motor, and are available in sizes up to 100hp.
- Broad offering from 1/2 to 100 hp
- Single-phase 230VAC up to 3hp
- Three-phase 230VAC up to 50hp and 460VAC up to 100hp
- Dual rating design (CT/VT ratings)
- Flexible carrier frequency to 15kHz and output frequency to 599.0 Hz
- STO - Safe Torque Off (TUV Certified)
- Built-in PLC supports up to 5K steps
- Free downloadable software for drive configuration and PLC programming
- High speed communication interfaces with MODBUS RTU built in, plus optional cards with additional interface types including EtherNet/IP and EtherCAT
- Optional 2 phase Quadrature encoder interfaces to support full closed loop speed/torque control
- Built-in USB port for fast and easy programming
- PID controller, including sleep and wake
- Analog I/O with (configurable) 2 inputs and 1 output
- Built-in tension control function
- Local/Remote control mode selection or digital/comm input with Hand/Off/Auto control
- 100kA Short Circuit Current Rating (Frames A-F)
- Built-in dynamic braking (up to 30hp@230VAC, 40hp@460VAC) and optional resistors
- Momentary power loss restarts
- RTD and/or PTC input motor protection
- Modular design eases maintenance and expansion, including quick replacement of cooling fan
- "Zero Stack" side-by-side zero gap installation
- Advanced LCD keypad with parameter descriptions and custom values/units
- Quick setting wheel dial for quick speed changes and parameter scrolling
- Circuit boards with conformal coating for improved environmental tolerance
- Innovative heat-sink design; able to operate at 50°C ambient temperature
- Fire Mode for emergencies to have uninterrupted smoke removal and system pressure
- Field-upgradable firmware (drive and communication option cards)
- CE, TUV, UL, cUL approvals
- Optional I/O cards at bottom
Starting at
$263.00
(GS31-20P5)
Toshiba AS3 AC Drives
Toshiba is a trusted name in power electronics with a proven track record in the industry. Their products are built with high-quality construction and offer long-lasting durability. Toshiba drives are one of the most prominent VFD brands and the AS3 series adjustable speed drives are packed with built-in features that, on competing products, would require purchasing additional components. The AS3 drives are designed to emphasize embedded communications and access to real-time data.
- Sizes from ½ to 300hp, 460 VAC
- NEMA 1 enclosure
- Heavy-duty overload rating of 150%
- Eight programmable digital inputs
- Three programmable relay outputs: one Form C relay output, two Form A relay outputs
- Three programmable analog inputs: one 4-20mA, one 0-10 VDC, and one -/+ 10 VDC
- Embedded STO Safety Terminal Compliant with IEC 61800-5-2 and SIL3 level in IEC 61508
- 2- or 4-wire RS-485 communications
- Built-in dual-port Ethernet supporting EtherNet/IP and Modbus TCP
- Embedded web server
- Real-time clock for past trip monitoring or calendar function
- QR code display for additional parameter information or fault code troubleshooting
- UL Type 1 up to 100hp
- Ambient temperature 14° to 122° F (-10° to 50°C) or 140°F (60°C) with derating
- Altitude up to 1000 meters without derating
- 95% non-condensing humidity rating
- Advanced LCD keypad with capacitive touch wheel
- Save, restore, and clone multiple drive system configurations
- Built-in dynamic braking circuit up to 100hp
- Free ASD Pro software for configuration
- Built-in function block program sequencer
- Multiple-loop PID control
- Pump control
- Permanent magnet AC motor control supported
- Industry 4.0/IoT supported
- Optional EtherCAT communications card
- Has 2 option card ports
Starting at
$545.00
(VFAS3-4004PC)
WEG CFW500 AC Drives
WEG CFW500 series drives are high-performance AC variable frequency drives that support closed-loop flux vector speed control as well as torque control modes and can operate both AC Induction motors and permanent magnet AC motors. These models are offered in an IP66/NEMA 4X enclosure up to 20hp and up to 150hp in an IP20 enclosure.
- 200-240 VAC 1-phase up to 3hp, 3-phase up to 40hp
- 380-480 VAC 3-phase up to 150hp
- Control modes include Scalar, Vector Control (sensorless and closed-loop with encoder feedback), and VVW PM (suitable for fan, pump and compressor)
- Speed and torque control down to 0 (zero) rpm & precision of 0.01% for speed control are attainable with closed-loop encoder feedback using vector control
- 0 to 500 Hz output frequency range
- 2.5 to 15 kHz adjustable switching frequency (5 kHz standard)
- Speed and torque control down to 0 (zero) rpm & precision of 0.01% for speed control are attainable with closed-loop encoder feedback using vector control
- Linear and "S" ramp acceleration and deceleration
- Local/remote control
- DC braking
- Torque boost
- Motor slip compensation
- Adjustable V/Hz profile
- Adjustable output current limit
- Flying start / ride-through
- PID regulator & PID sleep mode
- Built-in SoftPLC (Same programming software as other WEG VFDs CFW-WPS)
- Built-in RS-485 (Modbus RTU) communication
- Plenty of built-in I/O, expandable with option modules
- Built-in 24VDC power supply (max. 150 mA)
- STO - Safe Torque Off (TUV certified) with option module
- Optional remote keypads
Starting at
$251.00
(15570800)
DURApulse GS4 AC Drives
The DURApulse GS4 series of AC drives includes many of the same standard features as our other GS drives including dynamic braking, PID, removable keypad, and much more:
- 230 VAC 1-phase up to 25hp, 3-phase up to 100hp
- 460 VAC 3-phase up to 300hp
- V/Hz control or sensorless vector control for improved speed regulation
- 100kA Short Circuit Current Rating (SCCR)
- 50°C rating
- STO - Safe Torque Off (TUV certified)
- Built-in PLC (up to 10k steps)
- Built-in I/O capabilities:
- three analog inputs, two analog outputs
- one frequency output (high-speed pulse train)
- ten digital inputs, two digital outputs
- two STO inputs, two SPDT relay outputs - Expansion I/O slot accepts any one of three I/O option cards
- relay output card, AC input card, combination DC I/O card. - High speed communication interfaces:
Serial MODBUS RTU/ASCII and BACnet protocols built in,
Optional MODBUS TCP, EtherNet/IP communication cards - Flange mount capability
- GS4 QuickStart menus that simplify configuration
- The smart keypad is designed with defaults to quickly configure the drive, set the speed, start and stop the drive, and monitor critical application parameters. Up to four drive configurations can be stored in the keypad, and transferred to additional DURApulse GS4 drives. Users can also store up to 32 parameters in a custom Quick-Start menu. - Fire mode, Circulatory control mode
- Field upgradeable firmware
- CE, TUV, UL, cUL listed
Starting at
$578.00
(GS4-21P0)
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