Mitsubishi FX2N-16EYR-ES/UL — 16-Point Relay Output Extension Module | 24VDC | FX2N / FX3U Compatible | UL Certified | New OEM

The Mitsubishi FX2N-16EYR-ES/UL is a genuine Mitsubishi Electric 16-point relay output expansion module for the FX-series PLC platform. It connects directly to the right side of a compatible FX2N, FX2NC, or FX3U base unit via the extension bus connector, adding 16 independent relay contact output points (Y outputs) to the system without requiring additional power supplies or communication interfaces. The "ES/UL" suffix confirms this unit meets both IEC/CE (ES) and UL/cUL (UL) certification standards, making it suitable for machine deployments in North American and European regulated markets.

✅ 100% genuine Mitsubishi Electric. New factory sealed. Not refurbished. Ships worldwide.

🔍 Catalog Number Decoded — What Every Character in "FX2N-16EYR-ES/UL" Means

FX 2N - 16 E Y R - ES / UL
│ │ │ │ ││ │ └── UL: UL/cUL listed (North American safety certification)
│ │ │ │ ││ └─────── ES: IEC/CE compliant (international standard)
│ │ │ │ │└────────────── R: Relay output contact type (NOT transistor)
│ │ │ │ └───────────────── Y: Output module (Y = output in Mitsubishi FX notation)
│ │ │ └──────────────────── E: Extension module (not a standalone CPU unit)
│ │ └──────────────────────── 16: 16 output points
│ └─────────────────────────────── 2N: FX2N series (also compatible with FX3U as extension)
└──────────────────────────────────── FX: Mitsubishi FX PLC product family

The most important character for selection is "R" — Relay output. This means each output point is an independent electromechanical relay contact (N.O.), capable of switching both AC and DC loads, with galvanic isolation between the PLC control circuit and the load circuit. The relay output type is the correct choice for driving loads such as solenoid valves, indicator lamps, small motor contactors, and AC-powered devices. The transistor output equivalent (FX2N-16EYT) is only suitable for DC loads and is the required choice for high-speed pulse output applications — the relay version (this unit) is not suitable for pulse output or high-frequency switching.

⚙️ Technical Specifications

Parameter	Specification
Manufacturer	Mitsubishi Electric
Catalog Number	FX2N-16EYR-ES/UL
Module Type	Output-only extension module
Output Points	16 points (Y outputs)
Output Type	Relay contact (N.O.) — AC or DC load capable
Max Switching Voltage	240V AC / 30V DC
Max Output Current	2A per point
Max Load per Common	8A per common terminal group
Output Response Time	~10ms (relay switching — not for high-speed use)
Output Isolation	Relay contact — galvanic isolation between PLC and load
Internal Power Supply	24VDC from main unit extension bus (no separate PSU required)
Extension Bus Connector	Right-side direct bus connection to FX2N / FX3U base unit
Compatible PLCs	FX2N, FX2NC (with adapter), FX3U, FX3UC (with adapter)
Max Extension Modules	Up to 8 extension modules per FX2N system
DIN Rail Mounting	35mm standard
Operating Temperature	0°C to +55°C
Certification	ES (IEC/CE), UL, cUL
Condition	Brand New / Factory Sealed

💡 Relay Output vs Transistor Output — The Critical Selection Decision

Engineers specifying FX2N extension modules frequently ask whether to choose the relay output (FX2N-16EYR) or transistor output (FX2N-16EYT) variant. The decision has significant consequences for both function and longevity.

Choose Relay Output (FX2N-16EYR-ES/UL — this unit) when:

Driving AC-powered loads — solenoid valves at 110V AC or 220V AC, AC indicator lamps, AC motor contactors
Driving mixed voltage loads — a panel has both 24VDC and 110V AC devices to control
Load switching frequency is low to moderate — relay contacts are rated for approximately 100,000–300,000 mechanical switching cycles, which corresponds to years of service at typical industrial cycle rates
Galvanic isolation between the PLC circuit and load circuit is required for noise immunity or safety separation
Inductive load surge handling is required — relay contacts tolerate high inrush current from solenoids and contactors better than transistor outputs without external suppression

Choose Transistor Output (FX2N-16EYT) when:

All loads are 24VDC only
High-frequency switching is required — transistors switch thousands of times per second without wear
Pulse output (PTO) for stepper motor or servo drive step/direction control is needed — relay contacts cannot produce the clean pulse signals required
Long service life with very high cycle rates is needed (transistors have no mechanical wear)

Bottom line: If your panel includes any AC-powered devices or mixed voltages, or if load types are not yet finalized at design time, the relay output version (this unit) offers broader compatibility. Transistor output is strictly for DC-only, high-speed, or pulse output applications.

🆚 FX2N Output Extension Module Selection Guide

Model	Output Type	AC Load Support	Pulse Output	Points	Best Use Case
FX2N-16EYR-ES/UL ← This unit	Relay contact	✅ Yes (AC + DC)	❌ No	16	Solenoid valves, AC lamps, contactors, mixed loads
FX2N-16EYT-ESS/UL	Transistor (NPN sink)	❌ DC only	✅ Yes	16	High-speed DC switching, pulse output, servo step/dir
FX2N-32EYR-ES/UL	Relay contact	✅ Yes (AC + DC)	❌ No	32	High I/O count panels, relay output with more points
FX2N-16EX-ES/UL	Input module	—	—	16 inputs	Adding inputs, not outputs
FX2N-32ER-ES/UL	Mixed I/O	✅ Yes	❌ No	16 in + 16 out	Balanced I/O expansion

🏭 Typical Applications

The FX2N-16EYR-ES/UL's relay output architecture and broad voltage compatibility make it the standard choice for a wide range of FX-series system expansions:

Industrial conveyor systems — controlling pneumatic diverter solenoids (24VDC or 110V AC), zone indicator beacons, and motor starter contactors from a single extension module, mixing load voltages without additional interface relays.

Packaging machinery I/O expansion — a packaging line with an FX2N-32MR main unit that has exhausted its native outputs; adding an FX2N-16EYR provides 16 additional points for film sealer heater control, bag counter solenoids, and reject station actuators.

HVAC and building automation panels — FX-series PLC controlling fan motor starters, valve actuators, and damper actuators at various AC voltages; relay outputs handle 240V AC loads directly without additional interposing relays.

Injection molding machines — mold temperature zone solenoid valve control at 110V AC, where the relay contacts provide both load isolation and AC compatibility in a single module.

Machine tool auxiliary control — coolant pump starters, chip conveyor motor contactors, and tool changer solenoids on CNC auxiliary control panels using an FX2N/FX3U controller.

Food processing equipment — hygienic washdown environments where relay contact isolation between the 24VDC PLC bus and 240V AC actuator circuits provides an additional layer of electrical separation.

🔗 How to Add the FX2N-16EYR-ES/UL to an Existing FX System

The FX2N extension module system uses a direct side-bus connection — no separate communication cabling or address configuration is required:

Power down the FX2N or FX3U base unit completely
Remove the right-side extension cover from the existing rightmost module (base unit or last extension)
Connect the FX2N-16EYR-ES/UL to the right side via the built-in bus connector — it snaps into place mechanically and electrically
Power on — the base unit CPU automatically detects the new extension and assigns the next available Y output addresses (e.g., if the base unit uses Y0–Y15, the extension module will occupy Y16–Y31)
No parameter configuration or GX Works software changes are required for basic I/O address assignment — address allocation is automatic and sequential from left to right
Wire the load circuit to the module's output terminals (Y0–Y15 of the module, mapped to the assigned Y addresses in the PLC program) and the COM terminals

⚠️ Maximum extension limit: The FX2N system supports a maximum of 256 I/O points total across the base unit and all extension modules, and a maximum of 8 extension modules on the right-side bus. Verify your system has not reached this limit before adding modules.

📦 Procurement & Shipping

🔒 100% genuine Mitsubishi Electric — factory sealed, UL/CE certified
✅ Brand new — not refurbished, not pulled from service, not repackaged
🔍 Catalog number label and UL markings verified before dispatch
📦 Original Mitsubishi factory packaging
🌍 Worldwide express shipping (DHL / FedEx / UPS)
⚡ In-stock orders dispatched within 1–2 business days

❓ FAQ — Mitsubishi FX2N-16EYR-ES/UL Output Extension Module

Q1: What is the difference between FX2N-16EYR-ES/UL and FX2N-16EYT-ESS/UL? The difference is output type — relay contact versus transistor. The FX2N-16EYR-ES/UL (this unit) has relay contact outputs, capable of switching both AC (up to 240V) and DC (up to 30V) loads at up to 2A per point. The FX2N-16EYT-ESS/UL has transistor (NPN) outputs, which are DC-only (5–30VDC) but support high-frequency switching and pulse train output (PTO) for stepper and servo drive control. For any application involving AC-powered devices, or where load types are mixed or undecided, choose the EYR (relay) version. For high-speed DC switching or pulse output, choose EYT.

Q2: Is the FX2N-16EYR-ES/UL compatible with FX3U PLCs? Yes — the FX2N-series extension modules are mechanically and electrically compatible with FX3U base units and can be connected to the right-side extension bus of an FX3U in the same way as FX2N extensions. The FX3U CPU automatically assigns Y output addresses to the FX2N-16EYR in sequence. However, FX2N extension modules connected to an FX3U do not support the FX3U's high-speed features on those points — they operate as standard extension I/O. For FX3UC and FX2NC, a separate bus conversion adapter is required due to the compact connector format on those units.

Q3: How are Y output addresses assigned when I add FX2N-16EYR to my system? Address assignment is automatic and sequential — no software configuration is needed. The FX2N base unit scans connected extension modules from left to right and assigns Y addresses immediately following the base unit's last native output point. For example, if your FX2N-32MR base unit has outputs Y0–Y17 (octal notation, 16 points), adding an FX2N-16EYR to the right side will assign outputs Y20–Y37 to the extension module. Note that Mitsubishi FX PLCs use octal numbering for I/O addresses (Y0–Y7, Y10–Y17, Y20–Y27...) — there is no Y8 or Y9. Account for this when writing PLC programs referencing the extension module outputs.

Q4: What types of loads can the relay outputs switch directly, and what requires an interposing relay? Each relay output contact on the FX2N-16EYR is rated for 2A at 240V AC or 30V DC. Loads that can be driven directly include: 24VDC solenoid valves under 2A, 110V/240V AC small solenoid valves, indicator pilot lamps, and coils of motor starter contactors (which typically draw 50–200mA at the coil). Loads that should NOT be driven directly include: motors above a few watts (always switch via a contactor), loads drawing more than 2A, high-inrush loads without suppression (always add a snubber or flyback diode for inductive DC loads), and any load requiring pulse output or switching faster than approximately 10Hz (use transistor output instead). The 8A per common terminal group rating must also not be exceeded — if 8 outputs in a common group are all on simultaneously and each draws 1A, the 8A common limit is already reached.

Q5: Does the FX2N-16EYR-ES/UL need a separate 24VDC power supply? No — the FX2N-16EYR-ES/UL draws its internal logic power directly from the FX2N base unit's extension bus, which provides 5VDC for the module's internal circuitry. However, the load circuit (the devices connected to the output terminals) requires its own external power supply appropriate to the load voltage — 24VDC, 110V AC, 240V AC, etc. The module does not supply load power; it only provides the relay contacts that switch the external load power. Verify that adding the extension module does not exceed the base unit's extension bus power budget — the FX2N base unit documentation specifies the maximum total current available for extension modules.

Q6: How do I verify the FX2N-16EYR-ES/UL is genuine Mitsubishi Electric and not counterfeit? Genuine Mitsubishi Electric FX2N-16EYR-ES/UL units have the following identifiers: the Mitsubishi Electric diamond logo is clearly molded and printed on the housing; the catalog number label includes the full part number (FX2N-16EYR-ES/UL), a serial number, date code, and UL/CE marking; the housing color matches the standard FX2N gray-blue Mitsubishi palette; terminal screw torque markings are present; and the unit ships in the original Mitsubishi Electric factory box with matching catalog number barcode. Counterfeit FX2N modules often have slightly different housing dimensions, poor label print quality, or missing UL markings on the unit itself (only on the box). For critical OEM and replacement applications, request supplier traceability documentation.

Q7: Can I hot-swap the FX2N-16EYR-ES/UL while the PLC system is powered? No — the FX2N extension bus is not hot-swap capable. Adding or removing extension modules while the system is powered can damage the bus connector pins on both the module and the base unit, corrupt the CPU's I/O map, and in some cases cause irreversible damage to the base unit's extension bus interface. Always power down the entire FX2N/FX3U system before adding, removing, or repositioning extension modules. After reconnecting and powering on, verify that the CPU correctly recognizes all extension modules and that no I/O error codes appear before returning the system to operation.

FX2N-16EYR-ES/UL New FX2N16EYRESUL Mitsubishi Output Extension Module DC 24V