FUJI NB1-E40X-AC PLC Expansion Unit | Replacement, Equivalent & Selection Guide
The FUJI NB1-E40X-AC is a digital input expansion unit designed for the FUJI NB1 Series PLC platform. It extends the I/O capacity of the base unit via AC-powered discrete input channels, making it ideal for mid-scale industrial automation systems requiring reliable signal acquisition.
Technical Specifications
| Part Number | NB1-E40X-AC |
| Brand | FUJI Electric |
| Series | NB1 |
| Module Type | Digital Input Expansion Unit |
| Power Supply | AC |
| I/O Points | 40 Input Points |
| Input Type | Discrete / Digital |
| Communication | NB1 Series Expansion Bus |
| Mounting | DIN Rail |
| Operating Temp. | 0°C to 55°C |
| Weight | Approx. 1,250 g |
Compatible Replacement & Equivalent Models
If the NB1-E40X-AC is unavailable or discontinued, the following models may serve as functional equivalents or drop-in replacements depending on your system configuration:
| Model | Brand | I/O Points | Power | Compatibility Notes |
|---|---|---|---|---|
| NB1-E32X-AC | FUJI | 32 DI | AC | Same series, fewer I/O points; verify capacity |
| NB1-E40X-DC | FUJI | 40 DI | DC | DC variant; requires power supply change |
| NB1-E64X-AC | FUJI | 64 DI | AC | Higher capacity; backward compatible in most configs |
| Mitsubishi QX40 | Mitsubishi | 16 DI | AC | Cross-brand; requires adapter and re-programming |
| Omron CJ1W-ID231 | Omron | 32 DI | DC | Cross-brand alternative; different bus protocol |
Always verify electrical ratings, bus protocol, and firmware compatibility before substituting modules.
Why Choose the Original Model
- Native NB1 Bus Integration – Plug-and-play expansion with no additional configuration required.
- AC Power Input – Directly compatible with AC field wiring, reducing conversion hardware.
- 40-Point Capacity – High-density I/O in a compact form factor for space-constrained panels.
- FUJI Reliability – Engineered to FUJI Electric’s industrial-grade quality standards.
- Long Product Lifecycle – Supported by FUJI’s industrial automation ecosystem for extended service life.
Typical Applications
- Factory automation and discrete manufacturing lines
- Machine tool control and CNC auxiliary I/O
- Conveyor and material handling systems
- Building automation and HVAC control panels
- Water treatment and utility monitoring systems
- Packaging and food processing equipment
System Compatibility
| Base Unit | Compatible | Notes |
|---|---|---|
| FUJI NB1-8MR-AC | ✅ Yes | Standard NB1 base unit |
| FUJI NB1-14MR-AC | ✅ Yes | Standard NB1 base unit |
| FUJI NB1-20MR-AC | ✅ Yes | Standard NB1 base unit |
| FUJI NB1-E Series (other) | ✅ Yes | Same expansion bus |
| FUJI SPB / SPH Series | ❌ No | Different bus architecture |
| Third-party PLCs | ❌ No | Proprietary bus; not compatible |
Selection Guide
Use the following criteria to confirm the NB1-E40X-AC is the right module for your application:
- Step 1 – Count required DI points: Ensure 40 discrete inputs meet or exceed your field device count.
- Step 2 – Confirm power supply: Verify your panel provides AC power to the expansion unit.
- Step 3 – Check base unit slots: NB1 base units support a limited number of expansion modules; confirm available slots.
- Step 4 – Verify firmware version: Ensure your NB1 base unit firmware supports the E40X-AC expansion.
- Step 5 – Consider future growth: If expansion beyond 40 DI is anticipated, evaluate the NB1-E64X-AC instead.
Quality Assurance & Sourcing
- ✅ Genuine FUJI Electric components sourced from authorized distribution channels
- ✅ Full inspection prior to shipment – functional and visual checks performed
- ✅ Traceability – batch records and documentation available on request
- ✅ Warranty – 12-month warranty against manufacturing defects
- ✅ Export compliance – properly classified and documented for international shipment
How to Order
- Confirm part number: NB1-E40X-AC
- Specify quantity required
- Contact us via email or phone for lead time and pricing
- Provide your shipping destination for freight quotation
- Purchase order or proforma invoice issued upon confirmation
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I use NB1-E40X-DC instead of NB1-E40X-AC?
A: Functionally equivalent in I/O count, but the DC variant requires a DC power source. Ensure your panel wiring supports this before substituting.
Q: Is NB1-E40X-AC discontinued?
A: FUJI periodically updates its product lineup. Contact Konmask.com to confirm current availability and recommended successors.
Q: Can this module work with non-FUJI PLCs?
A: No. The NB1 expansion bus is proprietary to FUJI NB1 Series base units. Cross-brand use is not supported without significant hardware and software modification.
Q: What is the maximum number of expansion units per base unit?
A: This depends on the specific NB1 base unit model. Refer to the FUJI NB1 Series hardware manual for the maximum expansion configuration.
Q: Do you provide datasheets or manuals?
A: Yes. Contact us at support@konmask.com and we will provide the relevant FUJI technical documentation.
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Contact: support@konmask.com | +0086 19859288691
