This expansion unit adds 56 I/O points to Fuji NB series programmable controllers. It serves as a reliable extension module for NB1U56R-11 host systems in automation applications. Engineers choose this unit for its compact design and flexible I/O configuration. Its relay-based architecture allows easy point reallocation through simple plug-and-play adjustments.
I/O Architecture and Field Connectivity
The Fuji NB1W56R-11 provides 28 digital input points and 28 relay output points for field device connectivity . Its input channels accept 24 VDC signals from sensors, switches, and other field devices. The relay outputs handle 2 A per point at 240 VAC for controlling motors, solenoids, and indicator lamps. Users can reconfigure I/O points easily by plugging or unplugging relays on the terminal section. This modular approach reduces downtime during system modifications and expansions.
Mechanical Design and Physical Specifications
The Fuji NB1W56R-11 measures 110 mm in width, 52 mm in depth, and 37 mm in height . Its ultra-compact footprint saves valuable panel space in crowded control cabinets. The unit weighs approximately 0.26 kg for straightforward handling during installation. It supports both DIN rail mounting and rear-side screw mounting for flexible deployment options. The terminal cover includes an identification area for device numbering and labeling.
Terminal Features and Installation Convenience
The unit utilizes push-set terminals that eliminate screw tightening time during wiring . This design prevents screw loss and significantly speeds up installation procedures. The terminal section accepts wire sizes from 0.2 to 1.5 mm² (24 to 16 AWG). LED indicators provide 1:1 correspondence with each relay for clear I/O ON/OFF status verification . A built-in relay remover simplifies maintenance and replacement tasks. Furthermore, surge protection diodes safeguard the outputs from voltage spikes.
Key Technical Specifications
The table below summarizes the critical parameters for the Fuji NB1W56R-11.
| Parameter | Specification |
|---|---|
| Model Number | NB1W56R-11 |
| Manufacturer | Fuji Electric |
| Product Category | Expansion Unit |
| Series | NB Series |
| Product Type | Expansion unit for NB1U56R-11 host |
| Input Points | 28 points, 24 VDC |
| Output Points | 28 points, relay type |
| Output Current | 2 A per point at 240 VAC |
| Surge Protection | Built-in diode |
| Dimensions (W x D x H) | 110 mm x 52 mm x 37 mm |
| Weight | Approx. 0.26 kg |
| Mounting Options | DIN rail or rear-side screw mounting |
| Terminal Type | Push-set (screwless) terminal block |
| Wire Size | 0.2–1.5 mm² (24–16 AWG) |
| Status Indication | 1:1 LED per relay |
| Compatible Host | NB1U56R-11 |
| Backward Compatibility | Compatible with NB2 series extensions |
| Analog Support | Supports analog I/O modules |
| Country of Origin | Japan |
System Integration and Application Benefits
The Fuji NB1W56R-11 integrates seamlessly with NB1U56R-11 host processors for expanded control capability . The unit supports NB2 series extension compatibility for enhanced system flexibility. Users can combine this expansion unit with analog modules for mixed signal processing. Consequently, engineers can deploy this solution in packaging machinery, conveyor systems, and process automation. The compact and reliable design makes it ideal for space-constrained retrofit projects.
Details
| Weight | 0.26 kg |
|---|---|
| Dimensions | 110 × 52 × 37 mm |
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