Mitsubishi Electric · FX2N · PLC CPU

Mitsubishi Electric FX2N-48MR-UA1/UL

DiscontinuedHIGH

What should replace this part?

Your options

Our analysisNo OEM replacement (documented negative)

OEM suggested-replacement table states N/A for every UA1 variant: the 100VAC-input variant has no FX5U equivalent.

Our analysisFull redesign scope

Any continued operation means re-engineering inputs, program and dimensions around a modern FX platform.

Our analysisSource used / repair probe

Exact-model used and repair channels are the only short-term path; availability unverified this pass.

Replacement analysis

Original: FX2N-48MR-UA1/UL (FX2N 48-pt relay 100-240VAC UA1 variant)

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Replacement: none verified — see options

Relationship: No defensible replacement found HIGH

Migration / engineering work required — not a drop-in. This is not presented as a drop-in replacement.

Analyst note: AUDIT-CONFIRMED HIGH negative. Explicit OEM N/A; UA1 100VAC-input has no FX5U equivalent.

What changes?

I/O	100VAC UA1 inputs have no equivalent; sensors and input wiring must be re-engineered.
Software	GX Developer project converts to GX Works3 for any modern FX platform.
Mounting	Dimensions differ; panel layout must be re-checked.

Anything not listed here is unknown — the evidence does not establish it.

Can I still buy the original?

Repair: Unknown — not verifiedUsed: Unknown — not verifiedRefurbished: Unknown — not verified

New-original availability is not claimed unless evidence supports it. Availability is never implied by the existence of a listing alone.

Lifecycle

Status: Discontinued

Discontinuation date: 2012 (repair ended 2019)

Lifecycle source

Evidence

Every important claim traces to a source below. OEM source means the manufacturer published it; third-party source means a distributor, repair company or reseller states it; our analysis connects them — and is labeled as such.

OEM / manufacturer sources

OEM source HIGH Mitsubishi Electric · Tier A

FX2N series Introduced 1997 - Discontinued 2012; repair ends 2019

“Lifecycle: Introduced (1997) - Discontinued (2012) / Service Life: Repair Period Ends 2019”

Establishes: no_defensible_replacement_found · View source · Note: Fetched; AUDIT-CONFIRMED

OEM source HIGH Mitsubishi Electric · Tier A

Suggested replacement table: FX2N-48MR-UA1/UL maps to N/A; not always drop-in

“FX2N-48MR-UA1/UL | N/A / Suggested part numbers are not always drop-in... You may need to change programs and wiring”

Establishes: no_defensible_replacement_found · View source · Note: Explicit OEM negative finding; AUDIT-CONFIRMED

Why you might be searching this

FX2N-UA1 fault; why does no FX5U cross exist, and what now?

Related replacement analyses

Mitsubishi Electric A1SHCPU — Same plc cpu line

Need help deciding between repair, replacement, or migration?

Request a replacement review for FX2N-48MR-UA1/UL — repair assessment, sourced original, replacement quote, or migration scoping.

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Research status: done. Confidence HIGH reflects the evidence above, not marketing. Commercial paths: Used-market probe · Redesign scoping. No search-volume, pricing or revenue claims are made on this page.