FX3U-80MR/ES-A
Buying FX3U-80MR/ES-A from Flexa Systems
Buy the Mitsubishi FX3U-80MR/ES-A PLC brand new or refurbished, with both conditions in stock, or send yours to Flexa Systems for repair. This controller runs the logic of a machine or production line, so when it fails the whole process stops, and a matching unit ready to install keeps that downtime short. Before ordering, compare the full part number on your existing unit's label with FX3U-80MR/ES-A, including the suffix, because a near-match is not a drop-in swap. Every unit is tested before it ships and carries a 2-year warranty, and refurbished units typically cost 30-60% less than brand new.
Repair option: send in your faulty unit for component-level repair — $210.00 with free diagnostics, a 2-year warranty, and a 5–30 business day turnaround. Repair typically costs 40–70% of a new unit, saving you 30–60%. Learn more about our Mitsubishi repair and PLC repair service.
FX3U-80MR/ES-A at a glance
| Part Number: | FX3U-80MR/ES-A |
| Manufacturer: | Mitsubishi |
| Type: | PROCESS CONTROLLER |
| Communication: | RS-485, Ethernet |
| Enclosure: | IP20 |
| Software: | GX Works2, GX Works3 |
FX3U-80MR/ES-A FAQ
What should I check before swapping in a replacement FX3U-80MR/ES-A?
Back up the program from your current controller, or locate the latest saved project file, and note its firmware revision. Confirm that the replacement's firmware revision works with your project before you download it. After mounting, check the terminal wiring against your panel drawings before you power up.
Should I buy a refurbished or brand new FX3U-80MR/ES-A?
Both are in stock. Refurbished is a cost-effective way to keep an existing machine running. Brand new suits new panel builds, or cases where your maintenance policy requires unused parts.
Can I trade in my failed FX3U-80MR/ES-A?
Yes. Use the Trade-In button on this page for a free evaluation, and the credit is applied toward your purchase.
Compatible alternatives
Equivalent units from other manufacturers — all in-stock at Flexa, covered by the same 2-year warranty.
