Delta VFD022E21A Variable Frequency Drive | Brand New

Product Overview

The Delta Electronics VFD022E21A is a high-performance, sensorless vector AC micro drive belonging to the versatile VFD-E series. Engineered to deliver 3 Horsepower (2.2 kW) of continuous output, this compact inverter features a single-phase 230 V input configuration coupled with a robust 3-phase output to drive industrial motors up to 11 Amps. The VFD-E series stands out for its flexible modular layout, supporting side-by-side rail installation and plug-in expansion cards for fieldbus communication networks. Designed with built-in RFI filters and an internal dynamic braking transistor, the VFD022E21A provides exceptional torque control and speed accuracy across automated manufacturing lines, conveyor loops, and fluid pumping stations.

Core Technical Advantages

Sensorless Vector Control (SVC)

The drive features advanced open-loop vector control logic that calculates optimal motor slip parameters dynamically. This enables high starting torque and precise speed regulation under varying mechanical load demands without requiring an expensive external encoder feedback loop.

Integrated Dynamic Braking Transistor

An internal dynamic braking chopper circuit comes standard on this model. When paired with an optional external power resistor, the drive handles fast deceleration cycles and controls inertial overhauling loads without triggering overvoltage faults.

High-Frequency Application Range

Capable of outputting a high maximum frequency up to 600 Hz, the VFD022E21A is well-suited for specialized high-speed machinery. It operates smoothly with precision spindles, high-velocity fans, and rapid mixing hardware common in process plants.

Technical Specifications

Installation and Maintenance

Frame B Panel Space Allocation

The Frame B chassis measures 6.85 x 3.94 x 5.35 inches and carries a net weight of approximately 1.2 kg (2.65 lbs). It is ideal for standardized DIN-rail or direct panel mounting. Maintain proper vertical spacing inside your electrical cabinet to allow ambient air intake over the aluminum cooling sinks.

Single-Phase Input Power Hookup

Connect your single-phase 200–240 V AC supply wires directly to terminals L1 and L2. Do not supply power lines to terminals U, V, and W, as these are reserved exclusively for distributing balanced 3-phase current to the motor.

Operator Interface Management

Note that the standard VFD022E21A unit does not include a pre-installed digital keypad. Operator controls, external text keypads, and potentiometer accessories must be purchased separately depending on your monitoring panel needs.

Engineering Advantages

Modular Extension Options

The VFD-E design accommodates a variety of clip-on expansion boards. This allows automation teams to easily add secondary I/O terminals or industrial network connections like Modbus, Profibus, DeviceNet, or CANopen.

DC Injection Braking Performance

The drive features precise DC injection parameters, allowing it to apply steady stationary torque to the motor shaft. This stops uncontrolled drift on heavy mechanical fans or conveyors before starting rotation.

Space-Saving Rail Placement

Designed with a high-efficiency layout and effective heat dissipation channels, multiple VFD-E units can be mounted side-by-side on standard rails. This enables dense drive grouping inside compact enclosures.

Technical FAQs

Q1: Can the VFD022E21A model be operated on a 3-phase incoming power line?

A1: No, the VFD022E21A is configured specifically for a 1-phase 200–240 V AC input source. It converts this single-phase input internally to provide a balanced 3-phase variable frequency output for standard AC induction motors.

Q2: What is the highest output frequency that this AC drive can handle?

A2: The drive can output a maximum frequency of 600 Hz. This wide operational window makes it suitable for running high-speed tooling spindles, centrifugal blowers, or custom woodworking processing equipment.

Q3: Does the internal structure include an integrated dynamic braking resistor?

A3: The module contains an integrated dynamic braking chopper transistor. However, the physical power braking resistor is sold separately. You will need to install an external resistor to safely dissipate regenerative braking heat.

Commercial Contact Email: sale@etowonauto.com