Description
Product Description
HIMA F3221 is a high-performance digital input module designed for HIMA’s HIMatrix safety instrumented system (SIS), tailored to meet the rigorous demands of safety-critical industrial processes including oil & gas refining, chemical manufacturing, and nuclear power plant auxiliary systems. HIMA F3221 features 8 isolated digital input channels with ultra-fast response times, enabling real-time detection of critical process signals from sensors such as emergency stop buttons, pressure switches, and valve position indicators. HIMA F3221 is certified to IEC 61508 SIL 3 and complies with ATEX/IECEx standards for hazardous environments, ensuring fail-safe operation even in explosive atmospheres. Additionally, HIMA F3221 integrates advanced diagnostic capabilities and supports hot-swappable installation, minimizing maintenance downtime and enhancing the reliability of safety interlock systems. As a core component of HIMA’s HIMatrix portfolio, HIMA F3221 delivers unmatched precision and robustness for protecting personnel, assets, and the environment.
Product Parameters
- Brand/Model: HIMA F3221
- Core Input Parameters
- Number of Channels: 8 isolated digital input channels (1 channel per isolation group)
- Input Voltage: 24V DC (18-30V DC operating range)
- Input Type: Sinking (NPN) or sourcing (PNP) configurable per channel
- Response Time: ≤1ms (unfiltered), up to 100ms (software-filterable for noise suppression)
- Isolation: Channel-to-channel isolation (1500V AC), module-to-backplane isolation (2500V AC)
- System & Diagnostic Parameters
- Compatible Systems: HIMA HIMatrix F3/F4, HIMA Safety Manager
- Diagnostic Functions: Channel short/open circuit detection, overvoltage/undervoltage monitoring, backplane communication diagnostics
- Communication Protocol: HIMA proprietary SafetyBUS p, Ethernet/IP (optional)
- Configuration Software: HIMA SILworX V3.0+
- Environmental & Physical Parameters
- Operating Temperature: -40°C ~ +70°C
- Storage Temperature: -40°C ~ +85°C
- Vibration Resistance: 15g (10-2000Hz, IEC 60068-2-6 standard)
- Shock Resistance: 50g (11ms half-sine wave)
- Power Supply: 24V DC (redundant input supported), power consumption ≤ 3W
- Protection Grade: IP20 (cabinet installation), IP65 (optional ruggedized enclosure)
- Installation Method: HIMA HIMatrix standard rack slot or DIN 35mm rail mounting
- Dimensions: 100mm × 80mm × 40mm
Advantages & Features
- Ultra-Fast Response Time: With a ≤1ms unfiltered response time, HIMA F3221 detects critical process anomalies (e.g., emergency stop activation, pressure spikes) in real time, enabling immediate execution of safety interlock logic to prevent accidents—critical for high-speed industrial processes.
- SIL 3 Certification & Hazardous Environment Compliance: HIMA F3221 meets IEC 61508 SIL 3 safety standards and is ATEX/IECEx-certified for use in Zone 2/22 hazardous areas, making it suitable for explosive environments such as oil refineries and chemical plants.
- Per-Channel Isolation & Diagnostics: Each channel of HIMA F3221 is independently isolated, preventing cross-channel interference and ensuring fault containment. Advanced diagnostics (short/open circuit, voltage monitoring) provide real-time alerts for potential faults, enabling predictive maintenance and reducing unplanned downtime.
- Compact Design & Hot-Swap Support: The compact form factor of HIMA F3221 saves valuable rack space in control cabinets, while hot-swappable installation allows module replacement without shutting down the SIS—critical for continuous-process industries where downtime is costly.
Application Fields & Cases
- Chemical Plant Reactor Emergency Shutdown: A petrochemical plant deployed HIMA F3221 modules in its HIMatrix SIS to monitor high-temperature and high-pressure sensors on ethylene cracking reactors. The module’s 1ms response time triggered an immediate shutdown when a temperature sensor detected an abnormal spike, preventing a reactor rupture and potential explosion.
- Offshore Oil Platform Fire & Gas System: An offshore oil platform integrated HIMA F3221 into its fire & gas (F&G) system to detect gas leaks and fire alarms. The module’s ATEX certification and wide temperature range (-40°C ~ +70°C) ensured reliable operation in the platform’s harsh marine environment, while per-channel diagnostics identified a faulty gas detector before it caused a false alarm.
- Nuclear Power Plant Auxiliary System Control: A nuclear power plant used HIMA F3221 to monitor safety-related signals in its cooling water and emergency shutdown systems. The module’s SIL 3 certification and shock resistance (50g) complied with strict nuclear safety regulations, ensuring reliable performance even during seismic events.
Competitor Comparison
| Comparison Dimension | HIMA F3221 | Competitor 1 (Triconex 3501E) | Competitor 2 (Siemens S7-400F DI Module) |
|---|---|---|---|
| Response Time | ≤1ms (unfiltered) | ≤2ms | ≤5ms |
| SIL Certification | SIL 3 | SIL 3 | SIL 2 |
| Per-Channel Isolation | Yes (1500V AC) | Yes (1500V AC) | No (group isolation) |
| Hazardous Environment Cert | ATEX/IECEx | ATEX/IECEx | Optional |
| Vibration Resistance | 15g | 5g | 5g |
| Core Advantages | Ultra-fast response, per-channel isolation, ATEX compliance | TMR redundancy integration | Siemens TIA portal compatibility |
Selection Suggestions & Precautions
- Selection Suggestions: HIMA F3221 is the top choice for HIMA HIMatrix users requiring ultra-fast response times, SIL 3 certification, or operation in hazardous environments (e.g., offshore platforms, chemical reactors). For applications with 16 channels, HIMA F3231 is recommended. Non-HIMA system users may prefer Triconex 3501E for TMR redundancy or Siemens S7-400F for broader ecosystem integration.
- Precautions:
- Configure input type (NPN/PNP) and response time filters correctly for connected sensors to avoid signal delays or false triggers.
- Use shielded, intrinsically safe cables in hazardous environments to maintain ATEX/IECEx compliance and prevent EMI interference.
- Regularly check diagnostic data via SILworX software to identify channel degradation (e.g., increasing leakage current) and schedule proactive maintenance.
- Ensure the module is grounded to HIMA specifications (≤4Ω ground resistance) to maintain isolation integrity and safety certification.
- Avoid exceeding the module’s voltage/current ratings (18-30V DC input) to prevent permanent damage to input channels.
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