Description
HIMA F8650X Central Safety CPU Module
Product Brand & Model Title
Official Product Name: F8650X Central Safety CPU Module Brand: HIMA (Germany) Model No: F8650X Order code: 984865065Triconex1 … Product Grade: SIL3 certified safety‑CPU for HIMA HIMax safety instrumented system; legacy EOL spare‑part grade
General Product Overview
The F8650X is a rack‑mounted central processing unit for HIMA HIMax safety‑related SIS system. It adopts dual synchronized 32‑bit Intel 386EX processor architecture at 25 MHz, executes safety logic programs, handles system bus communication, I/O data processing and comprehensive system diagnostics. It features front‑panel 4‑digit alphanumeric display and multi‑LED status indicators for quick on‑site fault reading. Equipped with dual isolated RS485 interfaces for internal system bus, it communicates with all I/O modules inside the rack. Certified for SIL 3 safety integrity level per IEC 61508, widely used for emergency shutdown, fire & gas protection and safety interlock loops in process industries. Original manufacturing discontinued, supplied as spare‑part stock for existing installed‑base projects。
F8650X
Model Coding Definition
- F: HIMA safety‑system series identifier
- 8650: Core CPU hardware platform for HIMax system
- X: Hardware variant with front‑panel digital diagnostic display, dual RS485 system‑bus ports
Technical Specifications
Processor & Memory
‑ CPU: Dual synchronized Intel 386EX 32‑bit, 25 MHz clock frequency ‑ Flash memory: 1 MB for safety firmware & application program ‑ SRAM: 1 MB user data memory with ECC error correction ‑ Safety standard: SIL 3 (IEC 61508), Category 4, diagnostic coverage＞99 %
Electrical Parameters
‑ Supply Voltage: 24 VDC (supplied via rack backplane) ‑ Typical power consumption: 12 W ‑ On‑board watchdog: Safety watchdog with 24 V fail‑safe output ‑ Front‑panel elements: 4‑digit alphanumeric display, ERROR / CPU / ACK / IO LED indicators, acknowledge button, two selector switches for fault inquiry
Communication Interfaces
‑ Dual isolated RS485 ports: Internal HIMax system bus, also supports Modbus‑RTU ‑ Backplane connector: High‑speed parallel bus for I/O modules data exchange
Environmental Specifications
‑ Operating Temperature: −20 ℃ ~ +60 ℃ (cabinet installation) ‑ Storage Temperature: −40 ℃ ~ +85 ℃ ‑ Relative Humidity: 5 %‑95 %, non‑condensing ‑ Vibration & Shock: Compliant with IEC 60068‑2 industrial cabinet standard ‑ Ingress Rating: IP20 (cabinet‑mount only)
Mechanical & Certification
‑ Form Factor: Standard European rack plug‑in module (8 slot width) ‑ Weight: Approx. 1.45 kg ‑ Certifications: TÜV‑Rheinland SIL3, ATEX / IECEx Zone 2, CE, UL508 ‑ Lifecycle Status: End‑of‑life production; spare‑part supply only
F8650X
Core Product Features
- SIL3 safety‑grade dual‑CPU architecture: Synchronized dual‑processor design for safety‑critical logic execution, meets IEC 61508 safety requirements.
- Front‑panel comprehensive diagnostics: 4‑digit digital display plus multi‑LED indicators, directly shows fault codes without extra diagnostic tools.
- Dual isolated RS485 system bus: Reliable data exchange with all rack I/O modules, supports Modbus‑RTU for upper‑system connection.
- ECC memory error correction: Detects and corrects memory bit errors to avoid unsafe system operation.
- Safety watchdog supervision: Hardware watchdog ensures fail‑safe reaction upon CPU‑malfunction.
- Complete system‑wide diagnosis: Collects fault information from CPU itself and all I/O modules for fast troubleshooting.
- Rack‑based hot‑swap capability: Supports hot‑swap replacement within HIMax rack, minimizes plant downtime during maintenance.
- TÜV‑certified safety performance: Suitable for ESD, FGS and other safety‑interlock protection loops.
Application Fields
‑ Petrochemical & chemical plants: SIS safety‑system main CPU for emergency shutdown (ESD) ‑ Oil & gas industry: Fire & gas (FGS) safety protection, offshore platform safety‑related control ‑ Power generation: Power‑plant safety interlock and turbine protection system ‑ Refineries: Process safety instrumented system for critical process units ‑ Heavy‑process industry: Safety‑related interlock for chemical and fertilizer plants ‑ Retrofit & maintenance projects: Spare‑part replacement for existing HIMax installed‑base systems
Product Advantages & Value
‑ TÜV‑approved SIL 3 safety performance, satisfies global process‑safety project requirements. ‑ Built‑in front‑panel display enables local on‑site fault reading without laptop connection. ‑ Dual‑CPU synchronized architecture improves safety reliability for hazardous‑area applications. ‑ Hot‑swap maintainability reduces production stop risk during module replacement. ‑ Mature proven hardware for large installed‑base of HIMax safety‑system sites.
Compatible System & Interface Description
‑ Compatible Platform: HIMA HIMax safety instrumented system ‑ Installation: Plug‑in module inserted into HIMax system rack, powered via rack backplane ‑ Matched accessories: HIMax rack, system backplane, HIMA series safety I/O modules, rack power‑supply ‑ Configuration Tool: HIMA SILworX engineering software for safety‑program download, parameter setting and fault diagnosis
Related Recommended Products
- F8651X: Extended safety CPU module for HIMax system
- F3230: Digital input safety module matched for HIMax rack
- F3330: Digital output safety module for SIS interlock output
- F8627: HIMax system power‑supply unit
- F8650E: Previous‑generation CPU module of HIMax series
- HIMax standard system rack: Hardware carrier for F8650X and series I/O cards
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