HIMA F8650X Central Module

HIMA F8650X Key parameters

Processing Architecture & Redundancy

Utilizes dual Intel 386EX 32-bit processors operating at 25 MHz with synchronized redundancy. One CPU executes standard code, while the other runs inverted logic for real-time error detection and fault tolerance.

Memory Configuration: 1 MB Flash-EPROM (for firmware/user programs) and 1 MB SRAM (data storage), featuring hot-swappable redundancy with backup batteries to prevent data loss during power interruptions.

Achieves SIL 3 certification (IEC 61508/61511) with a fault detection time of ≤50 ms, ensuring uninterrupted operation in critical safety systems like nuclear reactors.

Communication & I/O Interfaces

RS-485 Interfaces: Two galvanically isolated serial ports, configurable for Modbus RTU/ASCII at 9,600/57,600 bps via hardware switches.

Ethernet Expansion: Supports Modbus TCP/IP through the F8627X add-on module, enabling integration with DCS/SCADA systems.

Analog Connectivity: Configurable analog input channels for voltage/current signals (e.g., 4-20 mA) and digital I/O for sensor/actuator control.

Power & Environmental Resilience

Input Voltage: 24 V DC (±15% tolerance) with ≤15% ripple, consuming ≤5 W under nominal loads.

Operating Range: Functions at -40°C to +70°C, with IP20 protection against dust and moisture.