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General purpose variable frequency drives (VFD) enable speed control for AC motors such as those in conveyors, fans, pumps and material handling. Available in capacities up to 30hp, various models offer V/Hz, sensorless vector or field oriented vector control modes.
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General Purpose AC Drives
Category Selection
General purpose AC drives typically offer more features and a larger selection of horsepower and voltage choices than a micro drive, and a lower cost than high performance drives. General purpose drives can be used for any number of applications including conveyors, pumps, fan, HVAC systems, and elevators. They provide the following benefits:
- Variable speed - Trimming the motor speed lower or higher than base speed as well as ramp the accel and decel time when changing speed or directions is their primary function.
- Reducing start-up current - Controlling the inrush current at motor start-up allows the use of smaller fuses, and reduces electrical peak load.
- Many modern general purpose variable frequency AC drives (VFDs) offer features that are normally only found on high performance drives, such as dynamic braking, sensorless vector control, advanced communication protocol support, and an integrated PLC.
- Integrated functionality - Most general purpose VFDs can vary motor speed and direction by operator input (keypad buttons/speed control knob) or by digital and analog inputs (from pushbuttons/switches/pots or PLC outputs); certain models support communication from a PLC or master controller, allowing networking with multiple drives for ease of integration and control.
- Cost - These drives are well worth their price for most applications. Unless you need a high-tech feature or have a high horsepower requirement, a general purpose VFD will likely do the job and cost less than a high-performance model.
For part listings and specifications, go to Shop Now
General Purpose AC Drives Overview
DURApulse GS20 AC Drives
DURApulse GS20 series vector control drives provide many common as well as advanced functions, all in a very compact unit. Features include dynamic braking, PID, removable keypad, and RS-485 Modbus communications. GS20 drives also offer single-phase input capability (all 230 VAC drives can be supplied single-phase), a built-in PLC, and an optional EtherNet/IP / ModbusTCP communication card.
DURApulse GS20 AC drives offer several speed control modes:
- Standard V/Hz with pulse input feedback
- In Sensorless vector control mode (SVC), the drive supports up to four (4) independent Induction Motor (IM) parameter sets or supports control of a single AC Permanent Magnet (PM) motor
- Ultra-precise Field Oriented Vector control (FOC) for maximum open loop speed regulation control
Expansive features include:
- Ratings from 1/10hp to 30hp
- Single-phase 120 VAC up to 1hp
- Single-phase/three-phase 230 VAC up to 20hp
- Three-phase 460 VAC and 575 VAC
- Flexible carrier frequency to 15khz and output frequency to 600Hz
- Speed control potentiometer built in
- Built-in PLC to support up to 2K steps
- Built-in USB port for fast, easy programming
- Free downloadable software for drive configuration and PLC programming
- Field-upgradable firmware (drive and communication option card)
- Optional LCD keypad
- Momentary power loss restarts
- 100kA SCCR
- (7) digital inputs (including one pulse train input up to 33kHz), (2) digital outputs, (1) SPDT relay output, and (2) STO inputs
- Analog I/O - configurable input type, (2) inputs and (1) output
- (1) frequency output
- Option slot supports backup control power option card, or EtherNet/IP / Modbus TCP communication option card
- Multi-motor control (4 total)
- Built-in dynamic braking (optional resistors)
- PID controller, including sleep and wake functions
- GS2 mode duplicates exact parameter configuration of GS2 series
Starting at
$162.00
(GS21-20P2)
IronHorse ACG AC Drives
IronHorse ACG series sensorless vector AC drives provide state-of-the-art functionality in a compact and durable package. Features include built-in dynamic braking, torque limit capability, NEMA 1 conduit boxes, zero-stack installation, a robust construction that meets military standards, and an optional Ethernet module supporting Modbus TCP or EtherNet/IP.
- Single-phase UL Ratings - 230 or 460 VAC input
- Single-phase 230 VAC up to 10hp
- Three-phase 230 VAC up to 20hp
- Single-phase 460 VAC up to 15hp
- Three-phase 460 VAC up to 30hp
- Supports several different control modes, including V/Hz, slip compensation, and sensorless vector
- Flexible carrier frequency to 15khz
- Output frequency to 400Hz (120Hz sensorless vector)
- Built-in RJ45 port for fast and easy programming
- Free downloadable VFD Suite software for drive configuration
- Local/Remote control mode selection or digital/comm input with Hand/Off/Auto control
- Momentary power loss restarts
- PCB conformal coating
- 100kA SCCR
- DC bus connection terminals
- Built-in dynamic braking
- Discrete I/O - (5) inputs and (2) relay outputs
- Analog I/O - configurable input type, (2) input and (1) output (voltage)
- 2-motor control
- PID controller, including sleep and wake
- Password protection
- RTD and/or PTC input motor protection
- High-speed communication interfaces with Modbus RTU built in
- Optional EtherNet/IP and Modbus TCP communication card
- Fire mode - Run fire mode during emergencies to have uninterrupted smoke removal and system pressure
- 2-year warranty
- CE, UL, cUL
Starting at
$181.00
(ACG-20P5)
WEG CFW320 AC Drives
WEG CFW320 variable frequency drives include all the features of the CFW300 plus add support for 460 VAC and an optional Ethernet communications module. The CFW320 series features contactor-style wiring and includes a built-in operator interface (HMI) and SoftPLC with free WPS programming software. Several I/O and communication modules are available to expand connectivity and control options.
- 1/4 to 1.5 hp, 115V (single-phase input)
- 1/4 to 3 hp, 230V (single-phase input)
- 1/4 to 5 hp, 230V (three-phase input)
- 1/2 to 10 hp, 460V (with or without dynamic braking)
- Scalar (V/Hz) or Sensorless Vector Control modes
- Built-in keypad display (with optional remote keypad)
- Memory module for easy project transfer
- DIN-rail or surface mount
-
Generous built-in I/O:
- 4 digital input points
- 1 relay output point
- 1 analog output channel
- Three expansion I/O modules available
- Optional communications modules
- Ethernet - Dual-port EtherNet/IP or Modbus TCP
- RS-232 Modbus RTU
- RS-485 Modbus RTU
- USB (config & programming only)
- Zero-Stack mounting; no heat dissipation space required beside/between adjacent drives
- cUL, CE
Starting at
$178.00
(CFW320A01P6S2NB20)
WEG CFW300 AC Drives
WEG CFW300 variable frequency drives are ideal for applications on machines or equipment that require precise variable-speed control with easy setup and operation. The CFW300 series features a compact size and includes a built-in operator interface (HMI) and SoftPLC with free WPS programming software. A variety of plug-in option modules for additional I/O and communications protocols can be added to extend capabilities.
- Ratings from 1/4hp to 5hp
- Single-phase and three-phase power supply
- DIN rail (35mm) or surface mounting with screws
- Side-by-side mounting; no heat dissipation space required
-
Voltage range:
- 1-phase models: 110-127 VAC & 200-240 VAC
- 3-phase models: 200-240 VAC
- Control mode: scalar (V/Hz) or voltage vector (VVW)
- Switching frequency: 2.5, 5, 10, or 15kHz
- Output frequency range: 0-400 Hz; 0.1Hz resolution
- 150% overload for 60 seconds, 200% for 3 seconds every 10 minutes
- IP20 protection
- Integrated brake chopper for frame size B (not available size A)
- Local keypad built-in, remote keypad optional
- cUL, CE
Starting at
$113.00
(CFW300A01P6S2NB20)
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