Mitsubishi FX3U-32MR/ES-A MELSEC-F PLC 16 Inputs 16 Relay Outputs 64K Steps

Mitsubishi Electric MELSEC-F FX3U series compact programmable logic controller (PLC) basic unit with integrated power supply, CPU and I/O. 16 digital inputs (24 V DC, sink/source configurable) and 16 relay outputs (2 A per point, 250 V AC / 30 V DC). Program memory 64,000 steps with 0.065 μs LD instruction execution time. Built‑in high‑speed counters (6 channels, up to 100 kHz) and pulse outputs (3 points, Y0/Y1 100 kHz, Y2 10 kHz). 100‑240 V AC power supply, real‑time clock, battery backup. Supports connection of FX2N/FX3U series I/O expansion modules and special function modules.

Applications:

• Medium‑sized machine automation and control panels

• Conveyor systems and material handling equipment

• Packaging machinery and assembly line control

• OEM equipment requiring relay output switching and high‑speed positioning

Core Specifications:

• Program memory: 64,000 steps (RAM, expandable via memory cassette)

• LD instruction execution time: 0.065 μs

• Total I/O points: 32 (16 inputs, 16 outputs)

• Input points: 16 (24 V DC, sink/source)

• Output points: 16 (relay, normally open)

• Output current: 2 A per point, 8 A per common (2 groups of 8 points, independent commons)

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

• Pulse outputs: 3 points (Y0, Y1: 100 kHz; Y2: 10 kHz) – transistor output models only

• Communication: RS‑422 (built‑in)

• Real‑time clock: built‑in

• Battery backup: Yes

Advanced Specifications:

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

• Power consumption: 35 W

• 24 V DC service power supply: 400 mA (for sensors)

• 5 V DC internal power: 500 mA

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

• Input impedance: X000‑X005 (3.9 kΩ), X006‑X007 (3.3 kΩ)

• Input current: X000‑X005 (6 mA at 24 V DC), X006‑X007 (7 mA at 24 V DC)

• Output response time: approx. 10 ms (relay)

• Mechanical life: ≥ 20,000,000 operations

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

• Protection rating: IP10 (IEC 60529)

• Dimensions (W × H × D): 150 mm × 90 mm × 87 mm

• Weight: approx. 0.65 – 0.87 kg

• Operating temperature: 0 °C … 55 °C

System Integration:

• Belongs to the Mitsubishi Electric MELSEC-F FX3U series.

• Mounts on 35 mm DIN rail or panel mount.

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

• Up to 8 special function modules (max. 256 I/O points) can be added.

• CC‑Link remote I/O expansion supports up to 384 total I/O points.

• Left side connection supports up to 4 special adapters (communication, analog input/output, temperature input) via the built‑in extension connector.

• Programmed using GX Works2 or GX Developer (version 8.72A or higher).

Compatibility information:

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

• The FX3U-32MR/ES-A uses the same 64,000‑step program memory and 0.065 μs LD instruction execution speed as all other FX3U base units.

• For connection to FX3UC or FX3GC CPU modules, use FX2NC‑CNV‑IF or FX3UC‑1PS‑5V adapter.

• When using CC‑Link network, the FX2N‑32CCL interface module can be connected to the CC‑Link system.

Standards & Compliance:
CE, UL/cUL, KC, EMC. Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• FX3U-16MR/ES-A – 16 I/O version (8 inputs / 8 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-32MT/ES-A – Transistor output (sink) version, 32 I/O, AC power supply

• FX3U-32BL – Backup battery for FX3U series

• FX3U-EEPROM-32L – Memory cassette (32,000 steps, EEPROM with program transfer function)

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

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

• FX3U-ENET-ADP – Ethernet adapter (adds Ethernet connectivity for MC protocol communication)