Mitsubishi FX2NC-32EX – 32-Point Digital Input Expansion Module | MELSEC FX2NC Series
Engineering Background
The Mitsubishi Electric MELSEC FX2NC series represents a compact, high-density PLC platform engineered for space-constrained industrial automation environments. Designed to meet the demands of modern manufacturing cells, the FX2NC platform delivers robust I/O expansion capability without sacrificing panel real estate.
Product Positioning
The FX2NC-32EX is a dedicated 32-point digital input expansion module purpose-built for the FX2NC PLC base unit. It enables procurement engineers and system integrators to scale input capacity efficiently — ideal for applications requiring high-density discrete signal acquisition from sensors, switches, and field devices. This module is a direct Mitsubishi Electric OEM component, sourced and verified through authorized industrial supply channels.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | FX2NC-32EX |
| Manufacturer | Mitsubishi Electric (三菱電機) |
| Series / Platform | MELSEC FX2NC |
| Module Type | Digital Input Expansion Module |
| Number of Input Points | 32 points (X) |
| Input Voltage | 24 VDC |
| Input Current | Approx. 5 mA per point |
| Input Impedance | 4.7 kΩ |
| ON Voltage / Current | ≥ 14.4 VDC / ≥ 3.0 mA |
| OFF Voltage / Current | ≤ 6.0 VDC / ≤ 1.5 mA |
| Response Time | 10 ms (standard) |
| Isolation Method | Photocoupler |
| Connection Method | Direct connector to FX2NC base unit |
| Power Consumption | 0.3 W (from base unit 5 VDC bus) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +75 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Weight | Approx. 130 g |
| Dimensions (W × H × D) | 40 × 90 × 87 mm |
| Country of Origin | Japan |
| Compliance | CE, UL, cUL |
Proven Application Environments
- Automotive Assembly Lines — High-density sensor feedback from jigs, fixtures, and part-presence detectors
- Packaging Machinery — Position sensing, limit switch monitoring, and conveyor control
- Food & Beverage Processing — Hygienic-area discrete signal acquisition with photocoupler isolation
- Semiconductor & Electronics Manufacturing — Precision process interlocking and safety circuit monitoring
- Building Automation & HVAC — Status monitoring of dampers, valves, and auxiliary contacts
- Machine Tool Control — Spindle feedback, door interlock, and tool-change confirmation signals
Engineering Advantages
- High-Density I/O Expansion — 32 input points in a compact 40 mm wide module, maximizing panel density
- Photocoupler Isolation — Full galvanic isolation between field wiring and PLC logic bus, protecting against ground loops and transient surges
- Direct Connector Interface — Tool-free snap-on connection to FX2NC base unit eliminates wiring errors and reduces commissioning time
- Low Power Draw — 0.3 W consumption from the 5 VDC internal bus minimizes thermal load on the control cabinet
- Wide Temperature Range — Rated 0–55 °C for reliable operation in non-air-conditioned industrial environments
- OEM Genuine Part — Manufactured by Mitsubishi Electric; full traceability and warranty compliance
System Architecture & Signal Flow
The FX2NC-32EX connects directly to the right-side expansion connector of the FX2NC main unit (or existing expansion chain). Field 24 VDC signals enter through the module’s terminal block, pass through photocoupler isolation stages, and are mapped sequentially to input registers (X) in the FX2NC CPU’s I/O table. The module draws its logic power (5 VDC) entirely from the base unit’s internal bus — no external power supply is required for the module itself.
Compatible Base Units: FX2NC-16MT, FX2NC-32MT, FX2NC-48MT, FX2NC-64MT, FX2NC-96MT, and all FX2NC-□MT-D variants.
Maximum Expansion: Up to 256 I/O points total when combined with other FX2NC expansion modules.
Sourcing & Quality Verification
- All units supplied by Konmask.com are genuine Mitsubishi Electric OEM components
- Each module undergoes incoming inspection including label verification, connector integrity check, and functional power-on test
- Traceability documentation (manufacturer lot code, date code) available upon request for regulated industries
- Units are shipped in original or equivalent ESD-protective packaging
- Counterfeit risk mitigation: we source exclusively from authorized distributors and verified industrial surplus channels
Procurement Process
- Confirm Compatibility — Verify your FX2NC base unit model and current I/O count against your expansion requirements
- Request a Quote — Contact [email protected] for volume pricing, lead time, and availability confirmation
- Place Order — Standard checkout via Konmask.com or PO-based B2B invoicing available for qualified accounts
- Shipping & Tracking — Orders dispatched within 1–3 business days; DHL / FedEx / EMS international express available
- After-Sales Support — Technical assistance, datasheet provision, and warranty claims handled by our engineering support team
Technical FAQ
Q: Can the FX2NC-32EX be used with FX3U or FX3G series PLCs?
A: No. The FX2NC-32EX uses the proprietary FX2NC direct connector interface and is not electrically or mechanically compatible with FX3U/FX3G expansion buses. Use FX3U-32EX for FX3U applications.
Q: Does this module support high-speed input functions?
A: No. The FX2NC-32EX is a standard 10 ms response input module. For high-speed counting or interrupt inputs, refer to the FX2NC-1HC or FX2NC-4EX-ES/UL modules.
Q: What is the maximum number of FX2NC-32EX modules that can be connected?
A: The FX2NC system supports a maximum of 256 total I/O points across all expansion modules. The number of FX2NC-32EX units is limited by this aggregate I/O ceiling and the base unit’s 5 VDC bus current capacity.
Q: Is a separate 24 VDC power supply required for the module?
A: The module’s logic circuitry is powered from the FX2NC internal 5 VDC bus. However, the field input circuits require an external 24 VDC supply connected to the module’s terminal block (typically sourced from the same 24 VDC rail powering field sensors).
Q: What documentation is available?
A: Mitsubishi Electric FX2NC Hardware Manual (JY997D16601) and FX2NC-32EX datasheet are available upon request. Contact [email protected].
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