Qingtian Variable Frequency Drives
Reliable AC Drives for Industrial Machinery
Qingtian supplies two focused VFD platforms — EC590 and EC6000 — for pumps, fans, compressors, textile machinery, packaging lines and demanding production equipment worldwide.
Product Range
Choose the Right Qingtian Drive
Keep your project simple: EC590 for dependable general-purpose machinery and EC6000 for higher dynamics, torque control and integration flexibility.
Qingtian Drive
EC590 Vector Control VFD
A compact general-purpose platform for induction and PM synchronous motors. EC590 balances performance, panel space and project cost.
- 0.75–315 kW
- V/F and sensorless vector control
- Book-type enclosure
- Built-in RS-485 / Modbus RTU
Qingtian Drive
EC6000 High-Performance VFD
A current-vector drive for production machinery that needs stronger speed stability, controlled torque and more integration options.
- Open-loop and closed-loop vector
- Speed and torque control
- Through-wall mounting
- Flexible industrial I/O
Quick Comparison
EC590 vs. EC6000
A short technical summary to help you shortlist the right platform before sending motor and application data.
| Selection Factor | EC590 | EC6000 |
|---|---|---|
| Best use | General machinery and cost-sensitive projects | Demanding lines with higher dynamics |
| Control | V/F and sensorless vector | V/F, open-loop and closed-loop vector |
| Integration | Built-in RS-485 / Modbus RTU | RS-485 / Modbus plus expansion options |
Applications
Built for Real Production Environments
From simple fan retrofits to integrated OEM machinery, Qingtian drives are configured around load type, voltage, overload demand and control interface.
Pumps & Water
Pressure control, flow stability and energy reduction.
Fans & HVAC
Soft start, airflow regulation and lower operating noise.
Compressors
Output matching under changing pressure demand.
Textile
Smooth acceleration and controlled machine speed.
VFD Knowledge Center
Latest VFD Engineering Guides
Selection advice, sizing checks, pump application guidance and control-mode comparisons from the Qingtian team.
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VFD Wiring Basics: Power, Motor and Grounding
VFD wiring basics: input, output and PE grounding, shielded motor cable, and the mistakes that damage drives.
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EC590 vs EC6000: Which Qingtian VFD Should You Choose?
EC590 vs EC6000 compared: control modes, torque control, mounting, expansion and typical applications.
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How to Size a VFD for Your Motor
How to size a VFD: match full-load current, voltage class and overload class – not just kW.
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V/F Control vs Vector Control VFD
Compare V/F and vector control VFDs by speed accuracy, low-speed torque, wiring, commissioning, cost, and best-fit industrial applications.
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How to Select a VFD for Pump Applications
Select pump VFDs by matching motor current, system curve, torque demand, speed range, protection, sleep/wake settings, and cavitation risk.
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VFD vs Soft Starter: Which One Do You Need?
Compare starting current, speed control, energy saving, cost, and application fit before choosing between a VFD and a soft starter.
Why Qingtian
Professional Supply, Ready for Export
We support panel builders, OEM machine manufacturers, system integrators and industrial distributors with direct technical communication and predictable delivery.
Pre-shipment Checks
Model, wiring and configuration verification before dispatch.
Documentation
English manuals, parameter references and shipping documents.
Export Packaging
Cartons suitable for air and sea freight.
Technical Support
Commissioning and fault-tracing assistance in English.
Next Step
Get a Model Recommendation
Send your motor power, voltage, load type and application. Our engineers will confirm the suitable EC590 or EC6000 configuration and provide pricing.