HIMA F3226A

Description

1. Product Overview

2. Product Parameters

2.1 Core Input Specifications

• Input Channels: 32 isolated digital input channels (4 channels per group, galvanic isolation between groups)
• Input Type: Dry contact (NO/NC), wet contact (24V DC), TTL-compatible signals (0-5V DC)
• Input Voltage Range: 18-30V DC (wet contact), 0-5V DC (TTL)
• Response Time: ≤2ms (signal detection to backplane transmission)
• Isolation Rating: 500V AC between channels (group-to-group), 2500V AC between module and backplane

2.2 Electrical & Communication Parameters

• Power Supply: 24V DC (supplied by HIMA SIS rack), power consumption ≤12W
• Backplane Interface: HIMA SafetyBUS p (HIMax) or Ethernet (HIMatrix), 100Mbps full-duplex
• Diagnostic Features: Open-circuit detection, short-circuit detection, channel fault status feedback, module self-test (BIT), LED per-group status indicators
• Input Logic: Configurable (normally open/normally closed, positive/negative logic)
• Redundancy Support: Compatible with HIMA’s 1oo2 and 2oo3 fault-tolerant SIS architectures

2.3 Environmental & Mechanical Parameters

• Operating Temperature: -20°C to +60°C (industrial-grade range)
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 5% to 95% (non-condensing), IP20 protection
• Vibration Resistance: 5-2000Hz, 2g (IEC 60068-2-6, X/Y/Z axes)
• Shock Resistance: 15g (11ms half-sine wave, IEC 60068-2-27)
• Mounting: HIMA HIMax/HIMatrix rack-mounted, hot-swappable (plug-in module)
• Dimensions: 48mm (W) × 220mm (H) × 180mm (D) – same footprint as 16-channel modules, 32-channel density

2.4 Certifications & Compatibility

• Safety Certifications: SIL 3 (IEC 61508/61511), TÜV Rheinland, ATEX Zone 2 (Ex nA IIC T4)
• Industry Certifications: CE, UL/cUL Class 1 Div 2, FCC Class A, RoHS
• Compatibility: HIMA HIMax H51q/H81 controllers, HIMatrix F65/F75 modules, HIMA SafetyBUS p networks
• MTBF: ≥1,200,000 hours (per Telcordia SR-332 standards)

3. Advantages & Features

1. High-Density SIL 3 Design: HIMA F3226A packs 32 isolated input channels into a standard module footprint, reducing rack space requirements by 50% compared to 16-channel modules—critical for compact control cabinets in offshore platforms or modular skid systems.
2. Fast & Reliable Signal Detection: With ≤2ms response time and galvanic group isolation, HIMA F3226A ensures rapid, interference-free detection of critical discrete signals (e.g., emergency stops, pressure switch trips) in noisy industrial environments.
3. Advanced Diagnostics: Per-group fault detection and module self-test capabilities provide real-time visibility into input health, enabling maintenance teams to identify faulty sensors or wiring before they compromise system safety.
4. Hot-Swappable & Redundancy-Ready: HIMA F3226A supports hot-swapping in live SIS systems and integrates seamlessly with HIMA’s fault-tolerant architectures, eliminating downtime for maintenance and ensuring no single point of failure.
5. Harsh Environment Durability: The -20°C to +60°C operating range and robust vibration/shock resistance make HIMA F3226A suitable for deployment in extreme environments, from arctic LNG facilities to desert refineries.

4. Application Fields & Cases

4.1 Application Fields

• Oil & Gas: Offshore platform ESD systems, refinery process unit monitoring, LNG liquefaction plant fire/gas detection
• Petrochemical: Chemical reactor safety interlocks, batch process sequencing, storage terminal overfill protection
• Power Generation: Nuclear power plant auxiliary safety systems, fossil fuel power plant boiler interlocks, wind farm grid safety switches
• Mining: Mine ventilation system monitoring, ore processing plant emergency stops, hazardous material transfer interlocks

4.2 Typical Cases

1. Offshore Platform ESD System: A Norwegian offshore oil platform deployed HIMA F3226A modules in its HIMax SIS to monitor 128 safety switches (pressure, level, emergency stop) across 4 wellhead control panels. The high-density design reduced rack space by 50% compared to legacy 16-channel modules, while the ≤2ms response time ensured immediate ESD activation during a well pressure anomaly, preventing a potential blowout.
2. Refinery Process Monitoring: A U.S. Gulf Coast refinery integrated HIMA F3226A into its HIMatrix SIS to monitor 192 sensors across 6 hydroprocessing units. The modules’ group isolation prevented cross-channel interference from nearby variable frequency drives (VFDs), eliminating false alarms and improving system reliability by 30%.
3. LNG Plant Fire/Gas Detection: An Australian LNG liquefaction plant used HIMA F3226A to process signals from 256 flame and gas sensors. The hot-swappable design allowed maintenance crews to replace a faulty module during peak production without shutting down the detection system, avoiding $500,000 in potential downtime costs.

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. Density & Safety Needs: Choose HIMA F3226A for high-volume (≥20 channels) SIL 3 applications (e.g., offshore ESD, refinery process monitoring); use 16-channel HIMA F3211 modules for low-density requirements.
2. Space Constraints: Opt for HIMA F3226A if rack space is limited (e.g., skid-mounted systems, offshore control cabinets); competitor 32-channel modules may lack SIL 3 certification or isolation.
3. System Compatibility: Select HIMA F3226A for integration with HIMA HIMax/HIMatrix SIS to ensure full diagnostic and redundancy support; third-party modules may require custom interface software.

6.2 Precautions

1. Installation Guidelines:
   • Install HIMA F3226A in HIMA-certified racks only; ensure minimum 10cm clearance for ventilation to prevent overheating in high-density configurations.
   • Use shielded twisted-pair cables (24 AWG) for wet contact inputs, with separate wiring for power and signal cables to minimize EMI.
2. Configuration Notes:
   • Configure input logic and fault detection parameters via HIMA Safety Workbench software; group similar sensors (e.g., pressure switches) to simplify diagnostics.
   • Enable channel-level fault logging to track intermittent issues (e.g., loose sensor wiring) that may not trigger immediate alarms.
3. Troubleshooting:
   • For group-level faults: Isolate the affected channel group (via Safety Workbench) to identify faulty sensors or wiring without disrupting the entire module.
   • For communication errors: Verify backplane connections and update module firmware (via Safety Workbench) to ensure compatibility with the host controller.
   • Hot-swapping: Follow HIMA procedures (deactivate the module via software) to avoid voltage spikes during replacement in redundant systems.
4. Maintenance:
   • Inspect connector pins and backplane contacts every 12 months for corrosion; clean with HIMA-approved contact cleaner to maintain signal integrity.
   • Test input response time and isolation resistance every 2 years using a calibrated signal generator and megohmmeter.
   • Stock spare HIMA F3226A modules for critical high-density applications—lead times for replacement may exceed 4 weeks for specialized SIS components.

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