HIMA F-CPU (Fail-Safe CPU) TÜV-certified Safety Logic Solver for SIS, HIQuad X Series (F-CPU01)
HIMA F-CPU (Fail-Safe CPU) TÜV-certified Safety Logic Solver for SIS, HIQuad X Series (F-CPU01) - Image 2
HIMA F-CPU (Fail-Safe CPU) TÜV-certified Safety Logic Solver for SIS, HIQuad X Series (F-CPU01) - Image 3

HIMA F-CPU (Fail-Safe CPU) TÜV-certified Safety Logic Solver for SIS, HIQuad X Series (F-CPU01)

  • F-CPU01: HIQuad X main safety CPU (subject model)
  • F8650E: Legacy H41q/H51q classic SIL3 CPU
  • F8650X: HIMax high-performance safety CPU
  • F8652E: H41q/H51q redundant CPU variant
  • F35 011: HIMatrix compact SIL3 safety controller
  • F60 CPU01: HIMatrix modular safety CPU
  • F8627X: HIMax communication co-processor
  • F8651X: HIMax redundant power module
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Description

HIMA F-CPU (Fail-Safe CPU) TÜV-certified Safety Logic Solver for SIS, HIQuad X Series (F-CPU01)

 

Core Product Overview

The HIMA F-CPU (typically F-CPU01) is the safety processor core of the HIMA HIQuad X safety instrumented system, designed for safety-critical process applications up to SIL 3 (IEC 61508, IEC 61511). It adopts a 1oo2D dual synchronous processor architecture, continuously comparing calculation results between two internal CPUs; any mismatch triggers safe-state action. It executes safety application logic, performs comprehensive module self-tests, manages redundant synchronization and SafeEthernet safety communication, and works with HIMA safety I/O modules. Engineering is done via SILworX software. Widely used in ESD, FGS and BMS for oil & gas, LNG, power and chemical plants. Some legacy HIMA F-CPU variants (F8650E, F8652E) belong to older HIQuad H41q/H51q platforms; new HIQuad X uses F-CPU01.

 

Main Technical Specifications

  • Part Number: F-CPU01 (HIQuad X)
  • Manufacturer: HIMA Paul Hildebrandt (Germany)
  • Device Type: Fail-Safe Safety CPU / Safety Logic Solver
  • Safety Level: SIL 3, TÜV certified
  • Architecture: 1oo2D dual synchronous processor, cross-comparison, continuous self-diagnostics
  • Programming Tool: SILworX
  • Safety Communication: SafeEthernet; redundant backplane bus
  • Power Supply: 24 VDC from system backplane, wide voltage tolerance
  • Cooling: Passive cooling, relies on rack airflow
  • Operating Temperature: -20°C ~ +60°C
  • Humidity: 10%–95% non-condensing
  • Form Factor: Eurocard plug-in rack module
  • Status: F-CPU01 is active HIQuad X product; older F8650E / F8650 are obsolete, available as surplus or refurbished spares

HIMA F-CPU

Same-Series Model Recommendations (8 Models)

  • F-CPU01: HIQuad X main safety CPU (subject model)
  • F8650E: Legacy H41q/H51q classic SIL3 CPU
  • F8650X: HIMax high-performance safety CPU
  • F8652E: H41q/H51q redundant CPU variant
  • F35 011: HIMatrix compact SIL3 safety controller
  • F60 CPU01: HIMatrix modular safety CPU
  • F8627X: HIMax communication co-processor
  • F8651X: HIMax redundant power module

 

Professional Quality Control & Testing Standard Operating Procedures

All surplus and refurbished HIMA F-CPU modules follow this inspection workflow:

  1. Visual Inspection: Check PCB, edge connectors, front-panel LEDs, capacitors and soldering; verify part number, serial and TÜV safety label.
  2. Backplane Power Bench Test: Install on matching HIQuad/HIMax backplane, apply 24VDC, confirm stable power rails without cycling or overcurrent.
  3. Boot & Firmware Validation: Complete power-on self-test, read firmware revision, confirm no permanent hardware fault codes.
  4. Dual-CPU Comparison Test: Verify 1oo2D cross-check function; inject internal fault simulation to validate fault detection.
  5. SafeEthernet & Backplane Test: Connect to HIMA safety I/O, validate safety telegram transmission and fault reporting.
  6. Safety Logic Test: Download SILworX test safety project, run scan cycle, verify trip logic and safe-state response.
  7. Thermal Soak Test: Operate at elevated cabinet temperature to expose intermittent memory, timing or connector faults.
  8. Final Cleaning & Packaging: Clean edge contacts, reset configuration, ESD packaging with printed test certificate.

 

New / Refurbished Module Installation Guidelines

  1. Pre-Installation Safety: Execute lockout-tagout; isolate SIS rack 24V supply and all field safety circuits to prevent spurious trips.
  2. Rack & Backplane Check: Confirm compatible HIQuad X backplane, protective earth, cabinet cooling and ventilation clearance.
  3. Mechanical Insertion: Align the F-CPU edge connector carefully, insert smoothly without force, secure front panel fasteners.
  4. Network & I/O Wiring: Terminate SafeEthernet and backplane links; use shielded cables, separate safety wiring from high-power cables.
  5. System Configuration: Use SILworX to configure hardware, assign safety addresses, compile safety program and generate safety CRC signature.
  6. Pre-Commissioning Functional Test: Power rack offline; test self-diagnostics, I/O wire-break detection, communication failure response and safe trip.
  7. Safety Acceptance: Perform site fault injection test, verify redundant synchronization, archive SILworX project and safety signature for audit.

 

Application Scenarios & Product Features

Typical Application Scenarios

  • Emergency Shutdown System (ESD) for petrochemical, refinery and offshore platforms
  • Fire and Gas System (FGS) flame and gas detection interlocks
  • Burner Management System (BMS) for gas turbines and boiler safety
  • LNG storage and compressor safety protection
  • Power plant auxiliary safety interlocks
  • Retrofit spare replacement for legacy HIMA HIQuad H41q/H51q racks

Core Product Features

  • 1oo2D dual-core fault-tolerant architecture certified SIL 3
  • Deterministic safety scan, continuous cross-comparison of dual processor results
  • Comprehensive self-diagnosis covering CPU, memory, clock, bus and I/O channels
  • SafeEthernet for high-integrity safety communication between rack nodes
  • Redundancy support for bumpless takeover in dual-CPU configurations
  • SILworX engineering software with safety signature and traceable change log
  • Passive cooling, robust EMC design for noisy process cabinet environments
  • Fail-safe response: force plant to predefined safe state upon detected hardware or communication fault

 

Frequently Asked Questions (FAQ)

Q1: What is the difference between HIMA F-CPU and Siemens F-CPU? A1: HIMA F-CPU is dedicated SIS safety logic solver for process ESD/FGS, based on 1oo2D. Siemens F-CPU is safety PLC for machine safety, uses PROFIsafe. Different platforms, engineering tools and typical industries.

Q2: Can I run non-safety control logic on HIMA F-CPU? A2: It is designed primarily for safety-related SIS logic. Non-safety DCS/PLC control normally runs on separate controllers, not on HIMA F-CPU.

Q3: Is HIMA F-CPU hot-swappable? A3: HIMax/HIQuad X support hot-swap hardware replacement, but removing an active F-CPU will interrupt safety execution and trigger safe trip. Replacement must be arranged under controlled shutdown or bypass procedures.

Q4: What software is required for programming HIMA F-CPU? A4: SILworX. Older H41q/H51q systems used ELOP II Factory.

Q5: What are common failure modes? A5: Edge connector oxidation, backup battery depletion, ageing electrolytic capacitors, SafeEthernet port ESD damage, flash firmware corruption from voltage transients.

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