HIMATRIX 984865002 (model F8650) is a SIL3 level central CPU module of the HIMA (Black Horse) HIQuad H41q/H51q series from Germany, serving as the core control unit of the safety instrumented system (SIS). Core parameters Model: F8650 (Material Number: 984865002) Safety level: SIL3 (TÜV certification, IEC 61508), PL e (EN ISO 13849) Processor: Dual Intel 386EX 32-bit, 25MHz, clock synchronization, heterogeneous redundancy Memory: 1MB system Flash, 512KB user program Flash, 256KB SRAM Communication interface: 2×RS485 (supports Modbus RTU) Diagnostic display: 4-digit digital tube, 2 status LEDs, operation buttons Power supply / Power consumption: 5VDC, 2000mA Size / Weight: 8TE (approximately 40mm wide) / approximately 500g Operating temperature: 0°C ~ +60°C Architecture: 1oo2 (binary choice) redundancy, fail-safe (Fail-Safe) Key features Dual-machine redundancy: Two processors operate synchronously and compare results. A single failure does not affect safety functions. High security and reliability: A single module achieves SIL3, suitable for high-risk scenarios such as ESD, BMS, and F&G. Rich diagnostics: Built-in self-diagnosis, real-time display of status via LED/digital tubes, facilitating maintenance. System compatibility: Specifically designed for H41q/H51q chassis, seamlessly integrated with communication modules such as F8627X. Typical applications Emergency stop system (ESD) core control Burner management system (BMS) logical operations Fire and gas detection (F&G) safety interlock Turbo machinery control (TMC) safety protection