Mitsubishi FX3U-80MR-ESA PLC Base Unit 40 In 40 Out Relay

Description

Key Technical Specifications

Product Introduction & Supply Chain Strategy

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Mitsubishi FX3U-80MR-ESA serves as a compact PLC base unit for high-speed machine control, packaging systems, and discrete manufacturing cells requiring high-density discrete I/O in a single footprint.

Securing this unit as New Surplus establishes critical buffer stock for operational continuity. Refurbished relays often suffer from contact pitting and degraded internal power supplies that cause intermittent input drops or premature output fusion. A single relay weld on an aged board can trip a safety interlock, causing thousands in unplanned downtime. Sourcing verified New Surplus delivers full 10-15 year operational expectancy, original backplane integrity, and direct drop-in capability without taking chances on worn second-hand components.

FX3U-80MR-ESA

FX3U-80MR-ESA

Installation & Configuration Guide

1.Pre-Installation (Prep & Safety):Isolate power and document wiring configuration.

Apply Lock-Out/Tag-Out (LOTO) procedures to the main panel 100–240 V AC line. Attach a grounded ESD wrist strap before unboxing the unit. Document the current installation by taking photographs of terminal block wiring, option boards, and expansion cable routings.

2.Removal:Extract module without damaging backplane bus connectors.

Disconnect all removable terminal blocks and high-speed expansion cables. Unclip the right-side extension bus ribbon if expansion modules are attached. Release the DIN-rail locking tabs at the base of the housing and ease the old unit straight off the rail to avoid twisting the extension bus pins.

3.Installation (Clone & Seat):Configure hardware options and mount unit.

Transfer optional memory cassettes (FX3U-FLROM) or special adapter boards (FX3U-ADP) from the old unit to the replacement. Mount the new FX3U-80MR-ESA onto the DIN rail, push down until the mounting clips engage, and reconnect the bus extension ribbon cables firmly.

4.Power-On & Testing:Verify rail voltages and download project logic.

Measure incoming AC power with a DMM to ensure stable 100–240 V AC before energizing. Apply power and check that the POWER LED illuminates solid green. Set the RUN/STOP switch to STOP, establish a PC connection via GX Works2 / GX Developer through the RS-422 port, upload/verify program parameters, and set the switch to RUN. Confirm the ERR LED remains off and digital input LEDs respond to field actuation.

Firmware/Software Versions & Upgrade Notes

• Software Requirement: Programming requires Mitsubishi GX Works2 (V1.08P or higher) or legacy GX Developer (V8.24A or higher).
• Firmware Revisioning: The FX3U-80MR-ESA base unit uses internal processor firmware starting at V2.20, with later hardware revisions utilizing V3.10+.
• Compatibility Issues: Special adapter boards (such as FX3U-ENET-ADP or -4AD-ADP) require CPU firmware V2.20 or later. If replacing an older CPU revision (e.g., V1.30) with a newer V3.10+ unit, verify that positioning instructions (like DSZR or ZRN) maintain identical multi-speed search behavior.
• Swap Warning: Do not attempt firmware flashes on hardware during field swaps. Upgrading or downgrading internal system software requires factory flashing tools; field changes risk bricking the main processing board. Match system software logic parameters in GX Works2 instead.

Frequently Asked Questions (FAQ)

Q: Is this unit brand new, or has it been restored/repaired?

A: This module is strictly New Surplus in its original box. It has never been installed in a panel, pulled from a working line, or opened for board-level repair. Zero solder work or component replacements have been performed.

Q: Why is the price lower than OEM list price but higher than online refurb listings?

A: OEM list prices reflect standard retail distribution markups with multi-week factory lead times. Refurbished listings are priced low because they use high-hour, worn components with short lifespans. Our New Surplus pricing bridges the gap: you save significantly off original list prices while acquiring factory-grade hardware that guarantees full operational life.

Q: Is the series end-of-life (EOL), and how does this impact my spares strategy?

A: Mitsubishi transitioned primary focus to the FX5U (MELSEC iQ-F) platform. While the is mature, millions of operating installations make immediate upgrades impractical. Maintaining 1-2 New Surplus -80MR-ESA units on-site prevents emergency retrofits or panel redesigns when a base controller fails.

Q: Can I hot-swap this module while the panel is powered?

A: No. Hot-swapping the main base unit while 240 V AC power is present will arc the terminal blocks and permanently damage internal backplane logic lines or connected expansion cards. Always isolate system power prior to removal.

Q: Will the PLC retain its program if the internal battery dies during storage?

A: The base unit utilizes non-volatile EEPROM for primary program storage, keeping your main ladder logic intact even without a battery. However, real-time clock data and latching device memories (registers D, M, C) depend on the internal battery (-32BL). We verify battery voltage on all New Surplus units prior to dispatch.

Q: What warranty coverage applies to this module?

A: We provide a full 1-year replacement warranty on all New Surplus units. If the module exhibits any functional failure under normal operating conditions within 12 months of purchase, we replace it immediately from our strategic stock.