Product Short Description
Product Name: HIMA F8650X High-Performance Safety Central Unit (CPU)
Product Overview: The F8650X (material code 984865065) is the current-production high-performance safety CPU of the HIMA F8650 series, serving as the brain of the HIMax safety control system. It executes safety-related logic, manages QMR redundancy, and coordinates system-wide diagnostics for critical process control.
Description
Technical Specifications:
- Processor: Dual-core Intel 386EX 32-bit microprocessor, 25 MHz per core
- Memory: 1 MB Flash-EPROM (OS) + 1 MB Flash-EPROM (user program) + 1 MB SRAM per processor
- Communication: 2 × isolated RS485 serial interfaces; Fast Ethernet (SafeEthernet, Modbus TCP, OPC) via expansion
- Safety Certification: SIL 3 (IEC 61508), AK6
- Supply: 5 V DC via backplane, typical 2 A
- Diagnostics: 4-digit matrix display, dual LED indicators, ACK reset button
- Safety Watchdog: 24 V DC output, max 500 mA, short-circuit protected
Functional Features: Built on HIMA’s proprietary QMR (Quadruple Modular Redundant) architecture; continuous synchronous self-diagnostic capability; automatic fault isolation upon discrepancy detection. Supports hot-swapping for safe online replacement during continuous plant operation.
Application Scenarios: Safety Instrumented Systems (SIS) in petroleum & natural gas (offshore ESD, HIPPS, pipeline protection), chemical & petrochemical (reactor safety interlock, tank emergency shutoff), power generation (turbine overspeed protection, boiler safety control), pharmaceutical/food (freeze-dryer vacuum monitoring, sterilization valve control), and rail transit signaling safety interlock.
Structural & Environmental Characteristics:
- Module width: 8 SU (approx. 128 × 165 × 130 mm)
- Weight: approx. 0.3 – 0.85 kg
- Operating temperature: -20 °C to +60 °C
- Storage temperature: -40 °C to +85 °C
- Humidity: up to 95 % non-condensing
- Protection class: IP20
Installation Requirements: Seated in the dedicated CPU slots of the HIMax chassis. Must be paired with an exact redundant counterpart (another F8650X or compatible F8652X variant) in the correct CPU slots.
Usage Notes: Never mix different CPU revisions in a redundant pair. Matching firmware versions across the redundant pair is crucial. The module’s continuous self-diagnostics reduce MTTR by automatically detecting channel faults and triggering alarms.
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