Mitsubishi FX3U‑80MR/ES‑A MELSEC‑F PLC 40 Inputs 40 Relay Outputs 64K Steps

Mitsubishi Electric MELSEC‑F FX3U‑80MR/ES‑A is a high‑performance compact programmable logic controller (PLC) basic unit with integrated power supply, CPU and I/O. 40 digital inputs (24 V DC, sink/source configurable) and 40 relay outputs (2 A per point, 250 V AC / 30 V DC). 64K steps program memory (RAM, battery‑backed) with 0.065 μs LD instruction execution time. Built‑in real‑time clock, high‑speed counters (up to 100 kHz), and positioning (up to 3 axes, transistor output models only). 100‑240 V AC power supply, removable screw terminal blocks. For factory automation, medium to large machine control, packaging systems, and OEM equipment.

Applications:

• Medium to large machine automation and control panels

• Conveyor systems, material handling and packaging machinery

• Assembly lines and factory automation

• Process control and data acquisition

• Legacy FX2N system upgrade and expansion

Technical Specifications:

Core Specifications

• Product type: PLC CPU unit (basic unit)

• Power supply: 100‑240 V AC (+10 % / –15 %), 50/60 Hz (permissible range 85‑264 V AC)

• Power consumption: 50 W

• Inrush current: ≤ 30 A at 100 V AC, ≤ 65 A at 200 V AC (5 ms max.)

• 24 V DC sensor supply: 600 mA

• Program memory: 64K steps (RAM, battery‑backed)

• LD instruction execution time: 0.065 μs

• MOV instruction execution time: 0.642 μs

Built‑in Digital I/O

• Digital inputs: 40 (24 V DC, sink/source, M3 screw terminal)

• Digital outputs: 40 (relay, normally open, 2 A per point, M3 screw terminal)

• Output common arrangement: 5 groups of 8 points (8 points/common)

Built‑in Functions

• High‑speed counters: up to 6 channels (100 kHz max., 2‑phase 50 kHz)

• Positioning: up to 3 axes (100 kHz, transistor output models only)

• Real‑time clock: built‑in, battery‑backed

• Analog adjustment: 2 built‑in potentiometers

Device Memory

• Auxiliary relays (M): 7,680 points

• Timers (T): 512 points (100 ms, 10 ms, 1 ms)

• Counters (C): 235 points (16‑bit up, 32‑bit bidirectional)

• Data registers (D): 8,000 points

• Extension registers (R): 32,768 points

Expansion & Communication

• Local I/O points max.: 256

• Local + remote I/O points max.: 384 (with CC‑Link)

• Expansion modules: up to 8 FX2N/FX3U series I/O units and special function modules

• Built‑in communication: RS‑422 programming port

• Communication options: RS‑232C, RS‑485 via function expansion boards, Ethernet via FX3U‑ENET‑ADP

Physical & Environmental

• Protection rating: IP10 (IEC 60529)

• Mounting: DIN rail (35 mm) or direct panel mount

• Dimensions (W × H × D): 310 mm × 90 mm × 86 mm

• Weight: approx. 1.4 kg

• Operating temperature: 0 °C … 55 °C

• Storage temperature: –25 °C … 75 °C

Advanced Specifications:

Digital Inputs (X000–X047)

• Input voltage: 24 V DC (+20 % / –15 %)

• Input impedance: X000–X005: 3.9 kΩ, X006–X017: 3.3 kΩ

• Input current: X000–X005: 6 mA at 24 V DC, X006–X017: 7 mA at 24 V DC

• ON voltage / ON current: ≥ 15 V DC / ≥ 3 mA

• OFF voltage / OFF current: ≤ 5 V DC / ≤ 1.5 mA

• Response time: approx. 10 ms (hardware delay)

• Isolation: Photocoupler isolation

Relay Outputs (Y000–Y047)

• Output current: 2 A per point, 8 A per common (resistive load)

• Load voltage: 250 V AC / 30 V DC max.

• Minimum load: 5 V DC, 2 mA

• Response time: OFF→ON ≤ 10 ms, ON→OFF ≤ 10 ms

• Mechanical life: ≥ 20,000,000 operations

• Electrical life: ≥ 100,000 operations at rated load

System Integration:

• This CPU unit belongs to the Mitsubishi Electric MELSEC‑F FX3U series.

• Mounts on 35 mm DIN rail or panel mount.

• Compatible expansion modules: FX2N, FX3U series digital I/O units and special function modules.

• Up to 8 expansion units (I/O, analog, positioning, temperature, high‑speed counter) can be connected to the right side of the basic unit.

• Up to 4 special adapters can be connected to the left side of the FX3U main unit (including FX3U‑485‑ADP‑MB, FX3U‑4AD‑ADP, FX3U‑4DA‑ADP).

• Programming and configuration performed using GX Works2 or GX Developer software.

• Backup battery (FX3U‑32BL) retains program memory and clock data during power‑off.

Standards & Compliance:
Refer to manufacturer official documentation for certification and compliance details (CE, EN, UL/cUL, RoHS).

Product Status:
Active product. Commercialized.

Related Products:

• FX3U‑32MR/ES‑A – 32 I/O version (16 inputs, 16 relay outputs)

• FX3U‑48MR/ES‑A – 48 I/O version (24 inputs, 24 relay outputs)

• FX3U‑64MR/ES‑A – 64 I/O version (32 inputs, 32 relay outputs)

• FX3U‑80MT/ES‑A – Transistor sink output version for high‑speed positioning

• FX3U‑32BL – Backup battery for real‑time clock and program retention

• FX3U‑232‑BD – RS‑232C communication board

• FX3U‑485‑BD – RS‑485 communication board

• FX3U‑ENET‑ADP – Ethernet adapter (MC protocol, socket communication)

• FX3U‑485‑ADP‑MB – RS‑485 Modbus adapter