
MITSUBISHI ELECTRIC FX3U-128MR/ES Used
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The Mitsubishi Electric FX3U-128MR/ES is a compact PLC base unit engineered for machine builders, OEMs, and panel integrators who demand high I/O density and dependable switching. With 128 total points—64 digital inputs at 24 V DC and 64 relay outputs—it delivers reliable control for conveyors, packaging, material handling, and general-purpose automation.
Powered directly from 100–240 V AC, the FX3U platform combines fast instruction processing (LD 65 ns, MOV 642 ns) with a generous 64k-step RAM program memory supported by a backup battery for secure retention. The base unit is expandable to 256 local I/O and up to 384 with extensions, and provides built-in RS-422 for programming/communication, with USB available as an option. Rated for 0–55 °C operation and IP10, and backed by CE, UL/cUL, UKCA, and major marine approvals, it integrates smoothly into industrial control panels.
Whether standardizing a new machine series or upgrading installed equipment, this robust FX3U PLC reduces panel footprint while maintaining serviceability and lifecycle support, and it is supplied with expert technical backing including a 1-year warranty.
- Brand: Mitsubishi Electric
- Series: MELSEC-F Series (FX3U)
- Model: FX3U-128MR/ES
- Supply voltage: 100–240 V AC
- Integrated I/O: 64 digital inputs (24 V DC), 64 relay outputs
- Output type: Relay
- Program memory: 64k steps RAM, battery-backed
- Communication interfaces: 1x RS-422; USB (optional)