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Controller Overview
This programmable controller handles small to medium automation tasks efficiently. You can install FUJI NB1W24R directly into control panels or small enclosures. The unit accepts digital inputs and drives relay outputs for machine control. It operates standalone or connects to a larger network master.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 90 mm x 90 mm x 65 mm |
| Weight | 0.41 kg |
| Digital inputs | 14 points (24V DC, sink/source) |
| Digital outputs | 10 points (relay, 2A per point) |
| Output contact form | Form A (SPST, normally open) |
| Program memory | 8 KB flash (approx. 4,000 steps) |
| Data memory | 2 KB RAM (battery-backed) |
| Scan time | 8 ms per 1,000 logic steps |
| Communication port | RS-485 (Modbus RTU slave) |
| Power supply | 24V DC (built-in) |
| Total onboard components | 156 discrete parts |
| Energy storage type | Super capacitor for program retention |
| Retention time | 72 hours without external power |
| Operating temperature | 0°C to +55°C |
Controller Layout and Components
The PCB places the CPU at the center for efficient signal routing. Ten relay output devices sit along one edge of the board. Additionally, 156 discrete components include optoisolators and power regulation circuits. A super capacitor retains program data for 72 hours after power loss. Consequently, you do not lose logic during short power interruptions.
Installation Process
You can mount FUJI NB1W24R on a standard 35 mm DIN rail. The hinged terminal cover provides safe access to field wiring connections. Furthermore, a front panel port allows program uploads from a PC. LED indicators show power, run, error, and I/O status clearly.
Performance Advantages
This controller executes 4,000 ladder steps within 32 milliseconds typically. The relay outputs switch up to 2A at 250V AC or 30V DC. Therefore, it directly drives small contactors and indicator lamps. The built-in Modbus RS-485 port also integrates with HMI panels easily.
Safety and Compliance
FUJI NB1W24R meets CE and RoHS industrial standards. The unit stores negligible electrical energy after full power-down. Hence, technicians face no capacitor discharge hazards during maintenance.