FX5UC-32MT/D

Product information

Product Overview

The FX5UC-32MT/D is a Mitsubishi Electric MELSEC iQ-F series CPU module — the FX5UC compact type with 16 inputs / 16 outputs, transistor sink outputs, powered from 24 V DC, and with connector-type I/O. It is the current-generation micro PLC that replaced the long-running FX3U family, and it is in current production (official sales status: On sale), so unlike discontinued controllers this page covers both new-build supply and genuine spare demand. Its core specification is identical across the FX5U platform: a 34 ns LD instruction execution time, 64 k-step program capacity (128 k steps with CPU firmware 1.100 or later), 120 kbytes device/label memory and 5 Mbytes data memory. Ladder, ST, FBD/LD and SFC programming are all supported from GX Works3. The value proposition is what is built in rather than bolted on: Ethernet and RS-485 ports are standard (no communication module needed for HMI, programming, MODBUS RTU/TCP or socket communication), a high-speed counter handles up to 6 ch at 200 kHz plus 2 ch at 10 kHz, positioning runs up to 4 axes at 200 kHz, and both an SD memory card slot and a web-server function are on board. As a compact FX5UC type it also omits the analog I/O present on FX5U screw-terminal models — if your application needs 2 ch analog input and 1 ch analog output, choose an FX5U screw-terminal CPU module or add an analog adapter.

Technical Specifications (Official Mitsubishi Electric Data)

Product family	Mitsubishi Electric MELSEC iQ-F series — FX5UC compact type
Model	FX5UC-32MT/D
Integrated I/O	16 inputs / 16 outputs
Output type	Transistor/sink output
Power supply	24 V DC
Control system	Stored-program repetitive operation
I/O control system	Refresh system
Programming language	Ladder diagram (LD), structured text (ST), function block diagram/ladder diagram (FBD/LD), sequential function chart (SFC)
Program capacity	64 k steps/128 k steps (128 kbytes/256 kbytes, flash memory)
Command processing time (LD / MOV)	34 ns
Constant scan	0.2 to 2000 ms (can be set in 0.1 ms increments)
Device/label memory	120 kbytes
Data memory / standard ROM	5 Mbytes
SD memory card	Memory card capacity (SD/SDHC memory card: Max. 16 Gbytes)
Built-in Ethernet port	1 channel (built-in as standard)
Built-in RS-485 port	1 channel (built-in as standard)
Built-in analog I/O	None built-in
Input points / connection	16 points / Connector
Input type	Sink
Input signal voltage	24 V DC +20%, -15%
Input signal current (X0–X17)	5.3 mA/24 V DC
Input response frequency (X0–X5)	200 kHz
Input response time (X0–X5)	ON: 2.5 μs or less / OFF: 2.5 μs or less
Output points / connection	16 points / Connector
Output external supply	5-30 V DC
Output max. load	0.3 A/point
Output circuit insulation	Photo-coupler insulation
Power consumption	5 W/24 V DC [30 W/24 V DC +20%, -15%]
Power fuse	125 V, 3.15 A Time-lag fuse
Rush current	35 A max. 0.5 ms or less/24 V DC
Operating ambient temperature	-20 to 55℃, non-freezing
Storage ambient temperature	-25 to 75℃, non-freezing
Operating ambient humidity	5 to 95%RH, non-condensation
Dielectric withstand voltage (power/ground)	500 V AC for one minute
Insulation resistance	10 MΩ or higher by 500 V DC insulation resistance tester
Grounding	Class D grounding (grounding resistance: 100 Ω or less)
Operating altitude	0 to 2000 m
Overvoltage category / pollution degree	II or less / 2 or less
External dimensions	42.1 mm (W)
Mass (weight)	Approx. 0.2 kg
Applicable standards	UL cUL CE(EMC) CE(RoHS) KC(EMC) LR NK DNV ABS RINA BV KR

All values above are taken verbatim from Mitsubishi Electric’s official MELSEC iQ-F specification data (mitsubishielectric.com product specification pages) and the official MELSEC iQ-F FX5S/FX5UJ/FX5U/FX5UC hardware manual for external dimensions and mass. No third-party or estimated figures are used. Where the official data carries a condition or footnote, the value shown is the headline figure — request the full datasheet with your enquiry for the qualified figures.

Lifecycle Status & Availability

Mitsubishi Electric lists the FX5UC-32MT/D as on sale — an active, current-production MELSEC iQ-F CPU module, not a discontinued or phase-out item. Spares, firmware updates and the GX Works3 engineering environment are all still supported by the manufacturer.

Stock on this page is real trade stock: condition, firmware revision and quantity are confirmed individually at quotation. We do not publish a fixed lead time or inventory figure, because both change weekly.

This model takes a 24 V DC supply, which suits machine builders and OEM panels that already run a 24 V DC bus and want to avoid a separate AC feed to the PLC.

Typical Applications

• Replacement and spare supply for existing FX5UC-32MT/D installations where the exact catalogue number and revision matter
• Machine-building and OEM panel construction on the current iQ-F platform
• Fast switching and pulse output duty — positioning, PWM and high-cycle-count outputs
• Space-constrained machines and small control panels, where the 42.1 mm width is the deciding factor
• Processes needing MODBUS RTU/TCP, CC-Link IE Field Network Basic or simple CPU-to-CPU communication over the built-in ports

Related & Compatible Models

Screw-terminal FX5U equivalents with built-in analog I/O: FX5U-32MT/ES (16/16 transistor), FX5U-32MR/ES and FX5U-32MR/DS. Where panel width is not the constraint, an FX5U screw-terminal CPU module avoids the connector cabling an FX5UC build requires.

Requesting a Quotation

To quote the FX5UC-32MT/D accurately, please state the exact catalogue number, the required quantity, and whether you need the module alone or with expansion modules, SD card, battery and mounting accessories. Where a machine is down, say so and attach the existing unit’s nameplate photo — that lets us confirm the firmware revision before shipping and avoid a second delivery. Note that as a connector-type FX5UC module it needs the matching connector cables and terminal hardware — state your intended I/O wiring method so the quotation includes it.

We do not publish stock levels, prices or delivery times on this page: they are confirmed individually against real availability at the time of your enquiry.

Frequently Asked Questions

What makes the FX5UC different from the FX5U?

Physical format and built-in functions. The FX5UC is a compact type only 42.1 mm wide with connector-type I/O, designed for very small panels and OEM machines. The CPU specification is the same 34 ns LD, 64 k-step memory and built-in Ethernet plus RS-485.

Does it have built-in analog I/O?

No. Built-in 2-channel analog input and 1-channel analog output are a feature of FX5U screw-terminal CPU modules, not of the FX5UC compact type. If you need analog, either choose an FX5U screw-terminal model or add an analog adapter or expansion module.

Do I need special cables?

Yes — I/O is via connectors, not screw terminals, so you need the matching connector and cable assembly rather than wiring directly to the module. Tell us your wiring method and we will include the correct accessories in the quotation.

How much current can the outputs carry?

The official specification gives 0.3 A per point for Y0 to Y3, with a maximum of 0.8 A per common terminal across 8 output points. Do not assume the transistor rating of the screw-terminal FX5U, which is 0.5 A per point.

Is it current production?

Yes, Mitsubishi Electric lists it as on sale.