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FI110 Series – The High-Performance, High-Protection VFD That Doesn’t Break the Bank

Apr. 03, 2026
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Introduction

Not every project needs a flagship drive with every bell and whistle. Sometimes, you need a workhorse – reliable, rugged, and reasonably priced.

Meet the KEWO FI110 Series. While it may not be our newest launch, it has quietly become one of our best-selling, most cost-effective VFDs for fan and light pump applications. Installers and distributors keep coming back – not because it’s flashy, but because it simply works, year after year.

In this article, we’ll reintroduce why the FI110 deserves a spot on your next BOM (Bill of Materials).


What Makes the FI110 Stand Out?

The FI110 was designed around one principle: deliver core functionality without compromising on protection or ease of use. Here’s what our customers love most:

1. VVC Control Algorithm – Tuning-Free Simplicity

The FI110 features an advanced VVC (Voltage Vector Control) algorithm for permanent magnet synchronous motors (PMSM). Unlike traditional SVC (Sensorless Vector Control), VVC eliminates the dependence on precise motor parameters.

  • No tuning required for synchronous motors – perfect control right out of the box.

  • Saves commissioning time – especially valuable for distributors pre-configuring units for resale.

2. Simple Debugging – 8 Parameters, Seconds to Start

KEWO has spent years refining parameter macros for the fan industry. The result?

  • Only 8 parameters need to be set to get the FI110 running.

  • Complete debugging in just a few seconds.

  • High adaptability across different fan models – no need to reinvent the wheel for every installation.

3. High Protection – IP54 Rated, No Electrical Box Needed

Most low-cost VFDs fail when exposed to dust, moisture, or oil mist. The FI110 is different.

  • Up to IP54 protection level – install it directly in workshops, barns, or outdoor fan applications.

  • No external electrical enclosure required – saves material and installation costs.

  • Reduces failure rates and maintenance frequency caused by environmental contaminants.

4. High Flexibility – One Drive, Two Motor Types

Why stock two different VFDs when one can do the job?

  • The FI110 supports both asynchronous motors and permanent magnet synchronous motors.

  • Switching between motor types is as simple as changing a parameter – no hardware modification.


Designed for Fan Applications – Especially Ceiling Fans

The FI110 isn’t a generic VFD trying to do everything. It is optimized for fan loads, with features that matter in real-world installations:

FeatureBenefit
Carrier frequency up to 16kHzSilent operation – no annoying high-pitch whine. Perfect for ceiling fans in quiet environments (bedrooms, offices, restaurants)
Built-in speed control knobOn-drive manual speed adjustment – no external controller needed for basic applications
Forward/reverse switchEasily change fan direction for summer (cooling) or winter (air circulation) modes
Main circuit power switchComplete component integration – reduces wiring complexity
Smooth operationNatural wind feel – no jerky speed changes that annoy users
33 protection functionsOvercurrent, overvoltage, overload, ground fault, and more – protects both drive and motor

Technical Specifications at a Glance

ParameterFI110 Details
Power range220V: 0.75kW – 2.2kW / 380V: 0.75kW – 4.0kW
Input voltage220VAC / 150–450VDC / 380VAC / 250–800VDC
Control modesV/F, SVC, VVC
Motor typesAsynchronous motor, Permanent magnet synchronous motor
Digital inputsX1–X3 (three multifunctional terminals)
Protection levelUp to IP54
Carrier frequencyUp to 16kHz


Applicable loads: Asynchronous ceiling fans, synchronous ceiling fans, mobile fans, and similar fan applications.


Who Is the FI110 For?

The FI110’s combination of low cost, high protection (IP54), and fan-optimized features makes it ideal for:

  • Ceiling fan manufacturers – integrate a reliable, silent drive into your product.

  • HVAC installers – retrofit existing fan systems with VFD control for energy savings.

  • Distributors – stock a single SKU that works with both asynchronous and synchronous motors.

  • Agricultural/industrial facilities – where dust and moisture would kill unprotected VFDs.


Why Promote the FI110 Now? (Even Though It’s Not New)

You might ask: If this product isn’t new, why write about it now?

Here’s the reality:

  • Supply chain volatility has made “cheap” VFDs unreliable. The FI110 offers stable availability at a competitive price point.

  • Energy costs are rising – end users are retrofitting fans with VFDs to save electricity. The FI110 is the perfect entry-level solution.

  • Distributors are looking for safe bets – products with proven field performance, not unproven new releases.

The FI110 isn’t trying to be the most advanced VFD on the market. It’s trying to be the most reliable, easiest to install, and best-protected VFD in its price class. And it succeeds.


Conclusion

The KEWO FI110 Series proves that “high performance” and “high value” don’t have to be mutually exclusive. With its IP54 protection, tuning-free VVC control, 8-parameter debugging, and fan-optimized feature set, it delivers exactly what installers and distributors need – no more, no less.

Ready to add the FI110 to your product lineup?

Contact the KEWO sales team today for bulk pricing, sample requests, or technical datasheets.