Modern PLC systems require fast and reliable processing power. The FUJI NP1PU-048E delivers robust control for mid-sized automation applications. This unit functions as a dedicated CPU module from FUJI Electric. It serves as the central processor for MICREX-SX series racks.
Technical Specifications & Dimensions
This CPU module integrates both processing logic and discrete I/O points. The table below outlines its core technical parameters.
| Parameter | Specification |
|---|---|
| Integrated I/O Points | 48 points (24 inputs / 24 outputs) |
| Input Type | 24V DC sink/source |
| Output Type | Transistor (NPN) 0.5A per point |
| Program Memory | 48 KB (ladder logic) |
| Execution Speed | 0.3 µs per basic instruction |
| Power Supply | 24V DC ±10% |
| Current Consumption | 280 mA typical |
| Unit Weight | 0.42 kg (0.93 lbs) |
| Dimensions (WxHxD) | 90 x 100 x 75 mm |
| Number of PCBs | 2 internal boards |
Construction and Interface Layout
This module features a reinforced plastic housing with EMC shielding. Such a design protects the processor from industrial electrical noise. Furthermore, the FUJI NP1PU-048E provides a front-accessible connector panel. You will find two 25-pin D-sub connectors on this interface. The module also includes an RS-232 port for programming connections. An LED status bar shows power, run, and error conditions clearly.
Energy Storage and Data Retention
Unlike basic relay controllers, this CPU module uses capacitor-backed SRAM for data retention. The internal supercapacitor provides up to 72 hours of backup power. Consequently, you will retain critical register values during short power outages. For longer shutdowns, the module stores programs in flash ROM permanently. A dedicated lithium battery maintains the real-time clock for calendar functions. This battery typically lasts five years under normal operating conditions.
Installation and Mounting Requirements
Installing the FUJI NP1PU-048E takes only a few minutes of work. The unit slides directly into a MICREX-SX backplane slot. It also locks securely with two top-mounted retaining clips. Always disconnect the 24V DC supply before inserting or removing this module. The unit uses passive cooling without any internal fans or vents. This design eliminates dust ingestion and fan replacement costs. The module requires a single slot in the main rack.
Processing Capabilities and Integration
This CPU executes ladder logic and SFC programs simultaneously. It handles up to 2,048 external I/O points when using expansion modules. Operators can connect a programming console via the RS-232 port. The FUJI NP1PU-048E also supports Modbus RTU communication for SCADA integration. Consequently, this processor remains an excellent choice for machine control. The unit delivers consistent scan times even with complex math operations.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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