MITSUBISHI FX3U-128MR/ES-A PLC Product Introduction (ECER Standard, English Only)
1. Product Overview
FX3U-128MR/ES-A is high I/O density CPU base unit of Mitsubishi MELSEC-F FX3U PLC series, designed for medium-scale sequential automation control. It adopts AC 100–240V universal power supply, configured with 64-point DC24V opto-coupler isolated digital inputs and 64-point mechanical relay outputs, reaching total 128 built-in I/O terminals. The unit collects field sensor, proximity switch and limit signal, executes compiled logic program to control solenoid valves, contactors, indicator lights and various low-power actuators. Supporting FX3U full-series extension modules including digital I/O, analog conversion, temperature detection and special positioning modules, it expands control capacity to satisfy complicated production line and multi-station equipment control demands.
2. Core Advantages & Key Features
- High-density I/O Layout: 128 onboard I/O reduces external expansion usage, optimizes electrical cabinet space arrangement for medium automation equipment.
- Universal Relay Output: Mechanical relay contact supports AC/DC mixed load driving, no extra intermediate relay required for conventional switching control, wide voltage adaptability for on-site loads.
- Powerful Operation Performance: 0.065μs per basic instruction, maximum 64K-step program memory with battery backup to preserve program and internal data after power outage.
- Flexible Expansion Function: Max local extended I/O up to 256 points; total system I/O expands to 384 points via CC-Link remote bus, compatible with all FX3U dedicated special modules.
- Rich Communication Expandability: Standard onboard RS422 programming port; optional RS485/RS232 communication boards to realize Modbus RTU, CC-Link and other mainstream industrial bus connection.
- Wide-range AC Power Input: AC100~240V wide voltage design effectively resists industrial grid voltage fluctuation, equipped with built-in overcurrent and short-circuit protection.
- International Certification & ECER Compliance: Certified with CE and UL, conforming to EN61131-2 and EN61000 EMC standards, meets EU ECER safety requirements for machinery export and whole-machine certification.
- Standard DIN Rail Mount: 35mm DIN rail installation, detachable screw terminal block for convenient field wiring and daily maintenance.
3. Technical Specifications
| Item |
Parameter Details |
| Brand |
MITSUBISHI ELECTRIC |
| Model |
FX3U-128MR/ES-A |
| Category |
FX3U CPU Base Unit |
| Power Supply |
AC 100~240V, 50/60Hz |
| Rated Power Consumption |
Approx 65VA |
| Digital Input |
64 Points, DC24V, Opto-isolated |
| Digital Output |
64 Points, Mechanical Relay, Rated 2A per single contact |
| Total Built-in I/O |
128 Points |
| Max Local Expandable I/O |
256 Points |
| Max Whole-system I/O(CC-Link) |
384 Points |
| Program Storage |
64K Steps, RAM with battery data backup |
| Default Communication Port |
RS422 |
| Optional Communication |
RS485 / RS232 expansion board |
| Dimension(W×H×D) |
350mm × 90mm × 86mm |
| Net Weight |
1.38kg |
| Operating Environment |
0℃ ~ +55℃, 10%~90% non-condensing RH, IP10 (cabinet internal installation) |
| Mounting Type |
Standard 35mm DIN Rail |
4. Application Industry & Warehouse Description
Applicable Industries & Application Scenarios
- Automatic Packaging Production Line: Multi-station carton forming, filling, sealing and palletizing equipment control
- Food & Beverage Automation: Multi-channel material batching, bottle conveying and capping assembly line
- Textile Machinery: Full-set loom, cloth cutting and post-processing automated equipment
- Environmental & Water Treatment: Multi-pump group control, chemical dosing and sewage treatment system
- General Heavy-duty Automation: Hydraulic pressing equipment, multi-station fixture and assembly machine
Warehouse Storage Specification
Original export carton packaging with inner anti-collision foam; products stored in constant-temperature dry warehouse on damp-proof plastic pallets, isolated from corrosive gas and humid environment. Every unit undergoes strict factory power-on inspection before delivery, in stock for spot supply and large-batch customized order.
5. ECER Compliance Statement
This FX3U-128MR/ES-A PLC satisfies EU ECER industrial control product safety and EMC regulatory requirements with complete certification documents, supporting European customs clearance and complete machine certification matching