0.2 kW Mini VFD, Single to 3 Phase, Non-Enclosure

$129.89

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This 0.2 kW (1/4 hp) mini VFD converts a 220-240V single-phase supply into variable-frequency three-phase output (0–1000 Hz, 1.6 A rated) for small three-phase induction motors. It ships as an open-frame board with no outer shell (151 × 104 × 73)mm and weighs 665g — so equipment builders can mount it directly inside their own cabinet. V/F and sensorless vector control, a built-in PID controller, and RS-485 Modbus communication are included.

Free shipping

Delivery date: 6-12 days

SKU: GK3300-2S0002

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Overview
Details
FAQ
Reviews

Overview

At 0.2 kW, this open-frame VFD fits the small motors found inside packaged machinery — feed rollers, small conveyors, fans, and dosing pumps. Because the input is standard single-phase 220–240V, no three-phase supply is needed at the installation site.

Because there is no housing, the drive must be installed inside a closed cabinet that keeps out dust, moisture, and accidental contact. Ambient temperature should stay within –10℃ to +40℃; above 40℃, derate output by 5% for each additional 1℃.

Specifications

Basics	Model	GK3300-2S0002
	Capacity	0.2 kW (1/4 hp)
	Shipping Weight	665 g
	Dimension	(15110473) mm
I/O Feature	Rated Current	1.6 A
	Input Voltage	1-phase 220~240V AC
	Input Frequency	50Hz/ 60Hz
	Output Voltage	3-phase AC 0~input voltage
	Output Frequency	0Hz~1000Hz
	Overload Capacity	150% of rated current for 1 minute, 180% of rated current for 3 seconds
Control Feature	Control Mode	V/F control
	Control Mode	Sensorless vector control
	Communication	RS485
	Speed Regulation	1:100
	Start Torque	150% of rated torque at 1 Hz
	Speed Control Accuracy	≤±0.5% of rated synchronous speed
	Frequency Precision	Digital setting: max frequency x ±0.01%
	Frequency Precision	Analog setting: max frequency x ±0.2%
	Frequency Resolution	Analog setting: 0.1% of max frequency
	Frequency Resolution	Digital setting: 0.01Hz
	Torque Boost	Automatic torque boost, manual torque boost 0.1%~30.0%
	Interior PID Controller	Convenient for making a closed-loop system
	Automatic Energy-Saving Running	Optimizes the V/F curve automatically based on the load to achieve power-saving running
	Automatic Voltage Regulation (AVR)	Can keep constant output voltage when power source voltage varies
	Automatic Current Limiting	Limits running current automatically to avoid frequent overcurrent, which will cause tripping
Environment	Enclosure Rating	Open frame, no enclosure — install inside a protective cabinet
	Temperature	–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
	Humidity	5%~95%, without condensation
	Altitude	≤1000m; VFD will be derated if above 1000m
	Impingement and Oscillation	Normal running:<5.9m/s^² (0.6g); Transportation:<15m/s^² (1.5g)
	Store Environment	–20℃ to +60℃; no dust, no corrosive gas, no direct sunlight

Note: inverter.com VFD Cannot be used as a power source; it Can only be directly connected to an induction motor to control the motor speed.

Details

Power Terminals

A large electrolytic capacitor stands upright on the board and smooths the rectified DC bus. Below it, a black power terminal block along the bottom edge takes the single-phase supply and the three motor output leads. Keeping the high-current terminals at the board edge separates them from the control wiring and makes cable routing straightforward.

Aluminum Heatsink

In the side view, a brushed aluminum heatsink plate runs the full height of the assembly, with fins along the bottom edge. The control board and power board sit parallel to each other above it. The heatsink carries heat away from the power stage, so leave clear space around it when mounting.

Control Board

The front view shows the microcontroller at the center of the control board, with a green screw terminal block for control signals on the left. A row of green, yellow, and red LEDs along the top edge provides at-a-glance status feedback, and a pin-header connector sits along the right edge. All control wiring is grouped on one side, away from the power terminals.

Features

Open-Frame, Space-Saving Design: At (151 × 104 × 73)mm and 665g, the board mounts directly in the host cabinet without a separate VFD housing, reducing panel volume and assembly cost.
Single-Phase In, Three-Phase Out: The VFD accepts a 220–240V single-phase supply and drives a three-phase motor with output frequency adjustable from 0 to 1000 Hz, so no phase converter is needed.
V/F and Sensorless Vector Control: V/F mode suits fans, pumps, and conveyors. Sensorless vector mode delivers 150% starting torque at 1 Hz and speed accuracy within ±0.5% for loads that need tighter regulation.
Built-In PID Controller: The drive can close a speed, flow, or pressure loop on its own from a feedback signal, with no external controller.
RS-485 Communication: A PLC or host controller can set parameters, start and stop the drive, and read status over RS-485, and several drives can share one bus.

Use Cases

Packaging and Labeling Machines: Feed rollers and small conveyors on packaging lines need a drive that fits inside the machine's own electrical cabinet. The open-frame VFD board adds speed control without adding a separate enclosure.
Textile and Printing Equipment: Yarn feed and web tension rollers need stable speed as the load changes. Sensorless vector control holds the commanded speed while roll diameter and tension vary.
Pharmaceutical and Food Machinery: Small mixers, dosing pumps, and feeders on single-phase supply benefit from soft, adjustable speed ramps, and the compact board suits tight machine layouts.
Small Fans, Pumps, and Conveyors in OEM Panels: Packaged ventilation units, circulation pumps, and light-duty conveyors use it as an embedded speed controller, with RS-485 allowing PLC integration.

Application Scenarios

Packaging Machinery

Non-enclosure mini VFD for texile and garment machinery

Textile & Garment Machinery

Printing Machinery

Non-enclosure mini VFD for pharmaceutical and food machinery

Pharmaceutical & Food Machinery

FAQ

Q1: Can this VFD run a three-phase motor from a single-phase 220V supply?

Yes. It accepts 1-phase 220–240V input and outputs three-phase AC from 0 up to the input voltage, so a three-phase induction motor wired for that voltage can run from ordinary single-phase power. Choose a motor rated at or below 0.2 kW (1/4 hp), with a rated current within the drive's 1.6 A output.

Q2: Does a non-enclosure VFD need to be installed in a cabinet?

Yes. The drive has no housing, so live parts are exposed. Mount it in a closed cabinet to protect it from dust, moisture, and contact, and keep the ambient temperature between –10℃ and +40℃. Leave clearance around the aluminum heatsink so heat can escape, and derate output by 5% per 1℃ above 40℃.

Q3: Should I use V/F control or sensorless vector control?

Use V/F control for fans, water pumps, and general conveyors, where load torque is steady and precise speed is not critical. Use sensorless vector control when the load changes or accurate speed matters, as in printing and textile rollers. It gives 150% starting torque at 1 Hz and speed accuracy within ±0.5% of rated synchronous speed.

Q4: How is this different from the standard single-to-three-phase VFDs on inverter.com?

The main difference is the form factor. This model is an open-frame board for installation inside your own cabinet, while the standard single- to three-phase frequency inverters come in a finished housing for standalone mounting. Choose the non-enclosure model when your equipment already provides the enclosure and panel space is limited; choose the enclosed model when the drive will be mounted on its own.

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