The MELSEC FX3 series (including sub-series FX3U, FX3G, and FX3S) consists of third-generation compact programmable logic controllers (PLCs) from Mitsubishi Electric, designed for simple to medium-complexity automation tasks. They integrate CPU, power supply, and I/O into a single unit, offering high performance, expandability, and compatibility with modern networks. The FX3 series is an evolution of the FX2N, with improved speed and built-in features. In production since the 2000s, it remains relevant for legacy systems, but migration to FX5 is recommended for new projects.

Key Features

• Compact design: DIN-rail mounting (35 mm), width from 60 mm, integrated power supply and I/O.

• Performance: Processing speed 0.065 µs/instruction (FX3U), scan cycle down to 0.2 ms; program memory up to 64 KB (FX3U).

• Programming: Ladder logic, STL, FBD via GX Developer or GX Works2 software; compliant with IEC 61131-3.

• Interfaces: RS-232/RS-485 (standard), optional USB, Ethernet, CC-Link; SD card slot (FX3U).

• Expansion: Up to 128–384 I/O points with modules (analog, high-speed counters, positioning up to 4 axes).

• Environmental durability: Temperature 0…55 °C, humidity 5–95% RH (non-condensing), vibration 5.3 m/s², shock 300 m/s².

• Standards: CE, UL, cUL, RoHS, IEC 61131-2.

Main Models

• FX3U (universal, 3rd generation): 16–256 I/O, 64 KB program memory, built-in RS-485/USB, expansion up to 128 modules.

• FX3G (compact for basic tasks): 14–128 I/O, 32 KB program memory, RS-485, up to 2 positioning channels. Ideal for small systems, width 80 mm.

• FX3S (entry-level in FX3 series): 14–60 I/O, 4–8 KB program memory (EEPROM), USB/RS-422, expansion up to 30–108 I/O.

Applications

• Small machinery: Conveyors, packaging lines, pumps, dispensers.

• Building automation: Lighting, HVAC, access control systems.

• Manufacturing: Positioning (servo motors), high-speed counters for conveyors.

• Mechanical engineering: Equipment control in food and textile industries.

• Legacy migration: Replacement of FX2N without program changes.

Advantages of MELSEC FX3 Series

• High speed: 65 ns/instruction, support for high-speed counters (100 kHz).

• Flexibility: Built-in analog I/O, positioning, network protocols (Modbus, CC-Link).

• Compatibility: Programs from FX2N/FX0N transfer without changes; expandable with FX modules.

• Reliability: MTBF >1 million hours, no battery (EEPROM for data), interference protection.

• Cost-effectiveness: Low cost, simple implementation, minimal maintenance.

• Ease of use: Intuitive software, compact design, fast commissioning via USB.

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Software and Getting Started

• GX Developer / GX Works2: Download from Mitsubishi’s website — programming, monitoring, simulation.

Why choose "CSC-Automation" to purchase Mitsubishi Electric MELSEC FX3 PLC?

"CSC-Automation" is the official distributor of Mitsubishi Electric in Ukraine with over 20 years of experience.

Our advantages:

• Fast delivery across Ukraine.

• Free expert consultations.

• Official warranty 1 year.

• Wholesale discounts.

• Customized solutions for your business.

How to buy a Mitsubishi MELSEC FX3 PLC Electric in Ukraine?

Ordering an MELSEC FX3 Mitsubishi Electric takes a few minutes:

1. View the catalog at kck.ua.

2. Call +38 (044) 494-33-55 or write to kck@kck.ua.

3. Receive the goods with delivery or pickup in Kyiv.