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Product Overview
This PLC module executes ladder logic programs for small to medium automation tasks. You can install FUJI FEH241-1 directly into FUJI distributed I/O racks. The unit handles discrete and analog signal processing simultaneously. It operates reliably in factory environments without external cooling.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 120 mm x 90 mm x 65 mm |
| Weight | 0.32 kg |
| Digital inputs | 12 points (24V DC sink/source) |
| Digital outputs | 8 points (transistor, 0.5A per point) |
| Analog inputs | 2 channels (0–10V DC, 12-bit resolution) |
| Communication port | RS-485 Modbus RTU |
| Program memory | 16 KB flash (approx. 2000 steps) |
| Data memory | 4 KB RAM retainable |
| Total onboard components | 142 discrete parts |
| Energy storage type | Super capacitor for program retention |
| Energy storage rating | 0.22 F at 5.5V (72 hours retention) |
| Scan time | 2 ms per 1000 logic steps |
| Operating temperature | 0°C to +55°C |
Board Layout and Components
The PCB organizes I/O circuits around a 16-bit central processor unit. Twelve optoisolated inputs protect against field wiring surges. Additionally, 142 discrete components include power regulation and signal conditioning circuits. A super capacitor retains program data for up to 72 hours without external power. Consequently, you do not lose logic during short power interruptions.
Installation Process
You can mount FUJI FEH241-1 on a standard DIN rail inside any control panel. The removable terminal blocks simplify wiring replacement during maintenance. Furthermore, an RS-485 port connects directly to Modbus RTU networks. LED indicators on the front panel show I/O status at a glance.
Performance Advantages
This module completes program scans in just 2 milliseconds per 1000 steps. The 12-bit analog inputs provide adequate resolution for monitoring sensors. Therefore, small machinery applications benefit from deterministic response times. The super capacitor backup also eliminates the need for a battery.
Safety and Compliance
FUJI FEH241-1 meets CE and RoHS industrial standards. The unit stores minimal electrical charge after full power-down. Hence, technicians face no capacitor discharge risks during maintenance.