Key Technical Specifications
- Product Model: F-CPU01 984866100
- Manufacturer: HIMA
- System Platform: HIMax XMR (eXtended Modular Redundancy)
- Processor: 1.5 GHz Quad-Core ARM Cortex-A9 with lock-step and 1oo4D diversity
- Safe Memory: 32 MB application memory + 8 MB retained data (MRAM)
- Cycle Time: Minimum 5 ms deterministic for 100 % safe logic (up to 300,000 safe I/O points)
- Diagnostic Coverage: > 99.9 % (IEC 61508), internal 1oo4D + time-triggered architecture
- Communication Interfaces: 4 × 1000Base-T Ethernet (safeethernet SIL 3, IEC 61784-3), 2 × RS485 service ports
- Backplane Bandwidth: 1.6 Gbit/s non-blocking via X-BASE high-speed interconnect
- Redundancy Modes: 1oo4D, 1oo2D, or non-redundant with automatic fault isolation < 1 ms
- Power Consumption: 18 W typical, 24 V DC (18–32 V)
- Operating Temperature: –20 °C to +60 °C (extended range –40 °C optional)
- Vibration / Shock: 5g continuous, 50g shock (IEC 60068-2-6/27)
- Certifications & Standards: IEC 61508 SIL 3 (SC 3), TÜV certified, EN 50156, NFPA 72, ATEX/IECEx Zone 2, marine DNV-GL
- MTBF: > 1,200,000 hours at 40 °C
Technical Architecture & Functional Positioning
The F-CPU01 is the central processing heart of the HIMax safety system and represents the highest evolution of HIMA’s patented XMR (eXtended Modular Redundancy) architecture. Four completely diverse processor cores execute the identical safety application in parallel, with continuous cross-comparison of all intermediate results at clock-cycle level. Any deviation triggers immediate isolation of the faulty core without process interruption — achieving diagnostic coverage beyond classic 1oo2D systems while maintaining true non-stop operation.
Unlike traditional safety PLCs that separate safety and basic process control, the F-CPU01 executes both safe and non-safe logic on the same processor with strict time and memory partitioning. This eliminates the need for gateway coupling between ESD and DCS, reducing latency to < 20 ms for critical interlocks.
Typical Application Scenarios:
- Applied in large-scale LNG liquefaction trains as integrated ESD, F&G, and BMS controller
- Used in refinery FCCU and hydrocracker units requiring SIL 3 emergency shutdown with > 50,000 I/O points
- Serves as direct replacement for obsolete HIQuad H51q/H41q systems with full program conversion
- Deployed in offshore FPSO topsides combining turbine control, HIPPS, and fire & gas in one platform
- Utilized in chemical batch reactors demanding validated safety logic according to IEC 61511 and FDA requirements
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