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Controller Overview
This CPU programmable controller serves as the main logic processor for small automation systems. You can install FUJI NB1U24X directly into control panels or distribute it as a standalone unit. The device executes ladder logic programs at high speed. It manages I/O locally while communicating with other network devices.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 90 mm x 90 mm x 65 mm |
| Weight | 0.38 kg |
| Digital inputs | 14 points (24V DC, sink/source) |
| Digital outputs | 10 points (transistor, 0.5A per point) |
| Output protection | Short-circuit and overcurrent |
| Program memory | 16 KB flash (approx. 8,000 steps) |
| Data memory | 4 KB RAM with battery backup |
| Scan time | 2 ms per 1,000 logic steps |
| Communication ports | RS-232 and RS-485 (Modbus RTU master/slave) |
| Power supply | 24V DC (built-in) |
| Total onboard components | 168 discrete parts |
| Energy storage type | Lithium battery + super capacitor |
| Battery life | 5 years typical |
| Operating temperature | 0°C to +55°C |
Controller Layout and Components
The PCB places the 16-bit CPU at the center of the board. Fourteen input optoisolators line the left edge for signal conditioning. Moreover, 168 discrete components include transistor drivers and power regulation circuits. A lithium battery maintains data memory for five years typically. The super capacitor also provides backup during battery replacement.
Installation Process
You can mount FUJI NB1U24X on a standard 35 mm DIN rail. The hinged terminal cover allows safe access to field wiring connections. Furthermore, front panel ports enable program uploads and network connections. LED indicators show CPU status, I/O states, and communication activity clearly.
Performance Advantages
This controller scans 1,000 ladder steps in just 2 milliseconds typically. Transistor outputs switch at high speed without mechanical wear. Therefore, it suits applications requiring fast output response and frequent cycling. The dual communication ports also connect to HMIs and drives simultaneously.
Safety and Compliance
FUJI NB1U24X 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.