Mitsubishi FX3U-64MR/ES MELSEC-F PLC 32 Inputs 32 Relay Outputs 64K Steps

Mitsubishi Electric FX3U‑64MR/ES is a high‑end PLC main unit from the MELSEC‑F FX3U series for medium to large machine automation, process control, and OEM systems. Integrates 32 digital inputs (24 V DC, sink/source) and 32 relay outputs (2 A per point, 250 V AC / 30 V DC). 64K steps program memory with 0.065 µs LD instruction execution time. Built‑in real‑time clock, high‑speed counters (up to 6 channels), and positioning (up to 3 axes, 100 kHz). 100‑240 V AC power supply, removable screw terminals, DIN rail mounting.

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

Core Specifications:

General & Performance

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

• LD instruction execution time: 0.065 µs

• MOV instruction execution time: 0.642 µs

• Integrated real‑time clock: Yes (battery‑backed)

• Local I/O points max.: 256

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

Built‑in Digital I/O

• Digital inputs: 32 (24 V DC, sink/source, M3 screw terminal)

• Digital outputs: 32 (relay, normally open, M3 screw terminal)

Built‑in High‑speed Functions

• High‑speed counters: up to 6 channels (60/100 kHz)

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

Power Supply

• Rated voltage: 100‑240 V AC (+10 %, –15 %)

• Permissible range: 85‑264 V AC

• Rated frequency: 50/60 Hz

• Power consumption: 35‑45 W

• 24 V DC sensor supply: 400‑600 mA (depending on I/O configuration)

• Dielectric strength: 1.5 kV AC for 1 min (between AC terminals and ground)

Advanced Specifications:

Digital Inputs (X000–X037)

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

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

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

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

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

• Response time: approx. 10 ms (hardware)

• Isolation: Photocoupler

• Operating status indicator: LED

Relay Outputs (Y000–Y037)

• Rated load voltage: 250 V AC / 30 V DC

• Max. resistive load: 2 A per point, 8 A per common (8 points/common)

• Max. inductive load: 80 VA (AC)

• Minimum load: 5 V DC, 2 mA

• Response time: approx. 10 ms (ON/OFF)

• Mechanical life: ≥ 20,000,000 operations

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

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

Physical & Environmental:

• Dimensions (W × H × D): 220 mm × 90 mm × 86 mm

• Weight: approx. 1.0 kg

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

• Operating temperature: 0 °C … 55 °C

• Storage temperature: –25 °C … 75 °C

• Certifications: CE (EMC, LVD), UL/cUL, ABS, BV, DNV GL, LR, NK, RINA, KR, RoHS

Expansion & Communication:

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

• Communication: Built‑in RS‑422 programming port

• Communication options: RS‑232C, RS‑485 via function expansion boards (FX3U‑232‑BD, FX3U‑485‑BD)

• Ethernet adapter: FX3U‑ENET‑ADP for SLMP/MC protocol and socket communication

• Network remote I/O: CC‑Link via FX2N‑32CCL module

System Integration:

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

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

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

• The FX3U series supports up to 8 special function modules 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.

• Optional memory cassette: FX3U‑FLROM‑64L (64K steps, EEPROM, with loader function).

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

Product Status:
Active product. Commercialized.

Related Products:

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

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

• FX3U‑80MR/ES – 80 I/O version (40 inputs, 40 relay outputs)

• FX3U‑64MT/ES – 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

• FX2N‑32CCL – CC‑Link master/local interface module

• FX3U‑FLROM‑64L – Memory cassette (64K steps, EEPROM, with loader function)