Fuji NB1W56R-11 PLC Module | Compact Controller

I/O Architecture and Field Device Connectivity

The Fuji NB1W56R-11 functions as a compact programmable logic controller module for small to mid-sized automation systems. It provides 16 digital input points and 16 digital output points for field device connectivity. This module integrates CPU and I/O functionality into a single unit for space-constrained installations. It manages machine control, process monitoring, and data handling efficiently.

Each input channel accepts 24 VDC signals from sensors, switches, and other field devices. The output channels deliver 0.5 Amps per point at 24 VDC for controlling relays, solenoids, and indicator lamps. Consequently, engineers can deploy this unit in applications requiring both input and output capabilities without additional modules.

Physical Specifications and Mounting

The NB1W56R-11 measures 11.5 cm in height, 8.2 cm in width, and 7.8 cm in depth. It weighs approximately 0.26 kg, allowing for flexible mounting in control cabinets and enclosures. This compact unit features integrated mounting tabs for DIN rail or panel installation. The front panel includes LED indicators for power, run, and I/O status monitoring. These visual indicators provide immediate feedback during system startup and troubleshooting.

A removable terminal block accommodates all field wiring connections for the 32 I/O points. This terminal block accepts wire sizes ranging from 0.2 to 1.5 mm² (24 to 16 AWG). The module also includes dedicated terminals for connecting external power to the output field circuits.

Power Consumption and Energy Storage

This PLC module draws 180 mA from the backplane at 24 VDC for internal logic operation. It incorporates energy storage capacitors that maintain I/O status during brief power interruptions. These capacitors provide approximately 10 milliseconds of hold-up time to prevent nuisance fault reporting. The module also features non-volatile memory that retains user programs and configuration settings without battery backup.

Technical Specifications

Parameter	Specification
Manufacturer	Fuji Electric
Model	NB1W56R-11
Category	PLC Module / Compact Controller
Series	NB Series
Input Points	16 points, 24 VDC
Output Points	16 points, transistor type
Output Current	0.5 A per point
Memory Type	Non-volatile, battery-free
Backplane Current Draw	180 mA at 24 VDC
Dimensions (H x W x D)	11.5 cm x 8.2 cm x 7.8 cm
Weight	0.26 kg
Mounting	DIN rail or panel mount
Wiring	Removable terminal block, 0.2–1.5 mm²

System Integration and Programming

The NB1W56R-11 serves as a standalone controller for small automation systems or as a remote I/O device. It supports programming through Fuji standard software or handheld programmers for flexible configuration options. Users can connect this module to operator interfaces and other controllers through serial communication ports. This compact design makes it ideal for conveyor control, packaging machines, and small process automation applications.