HIMA F3334

Description

1. Product Overview

2. Product Parameters

2.1 Core Output Specifications

• Output Channels: 16 Form C (SPDT) relay channels (2 channels per group, galvanic isolation between groups)
• Relay Ratings:
  • Resistive Load: 250V AC/5A, 30V DC/5A
  • Inductive Load: 250V AC/2A, 30V DC/2A (with built-in surge suppression)
• Contact Life: Mechanical ≥10 million operations, Electrical ≥100,000 operations (at rated load)
• Response Time: ≤15ms (coil energization to contact closure)
• 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 ≤10W
• Backplane Interface: HIMA SafetyBUS p (HIMax) or Ethernet (HIMatrix), 100Mbps full-duplex
• Diagnostic Features: Coil open/short detection, contact weld monitoring, module self-test (BIT), fault status feedback to host system
• LED Indicators: Per-channel output status (ON/OFF), module power, fault, and communication status
• Safety Configuration: Configurable fail-safe state (energize-to-operate or de-energize-to-operate)

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), standard rack compatibility

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: ≥900,000 hours (per Telcordia SR-332 standards)

3. Advantages & Features

1. SIL 3 Fault Tolerance: HIMA F3334 is certified for SIL 3 applications and integrates with HIMA’s 1oo2/2oo3 redundant architectures, eliminating single points of failure and ensuring compliance with the strictest safety standards for critical actuation tasks.
2. Isolated Channel Design: Galvanic isolation between channel groups prevents cross-channel interference and protects against electrical faults, ensuring reliable switching in noisy industrial environments (e.g., near high-voltage equipment or VFDs).
3. Comprehensive Diagnostics: Contact weld monitoring and coil fault detection provide real-time alerts to potential failures (e.g., stuck valves, shorted relays), enabling predictive maintenance and reducing the risk of unplanned shutdowns.
4. Hot-Swappable & Easy to Maintain: HIMA F3334 supports hot-swapping in live SIS systems, allowing module replacement without disrupting safety operations. Front-panel LED indicators simplify troubleshooting, minimizing maintenance downtime.
5. Flexible Fail-Safe Configuration: The ability to set energize-to-operate or de-energize-to-operate modes makes HIMA F3334 adaptable to application-specific safety requirements (e.g., fail-closed valves for ESD systems).

4. Application Fields & Cases

4.1 Application Fields

• Oil & Gas: ESD valve actuation, pipeline isolation systems, offshore platform pump/motor control
• Petrochemical: Refinery burner management (fuel valve control), reactor emergency shutdown, chemical storage tank overfill protection
• Power Generation: Turbine lube oil pump control, boiler safety valve actuation, nuclear auxiliary system interlocks
• Chemical: Hazardous material transfer valve control, batch reactor dump valve actuation, fire suppression system triggering

4.2 Typical Cases

1. Refinery ESD System: A major Middle Eastern refinery deployed HIMA F3334 modules in its HIMax SIS to control 64 isolation valves across 4 hydroprocessing units. The module’s contact weld detection feature identified a faulty relay in a critical shutdown valve, allowing proactive replacement and preventing a potential hydrocarbon release that could have cost $1.5M in downtime.
2. LNG Plant Cryogenic Control: An Australian LNG plant integrated HIMA F3334 into its HIMatrix SIS to actuate cryogenic pump motors and pressure relief valves. The module’s -20°C to +60°C operating range ensured reliable performance in the plant’s low-temperature environment, while fail-safe configuration (de-energize-to-stop) prevented pump overrun during power outages.
3. Nuclear Auxiliary System Interlocks: A European nuclear power plant used HIMA F3334 to control safety interlocks in cooling water systems. The module’s SIL 3 certification and compatibility with HIMA’s 2oo3 architecture met strict regulatory requirements, ensuring 99.999% operational reliability over 5 years of service.

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. Safety Level & Actuation Needs: Choose HIMA F3334 for SIL 3 safety-critical actuation tasks (e.g., ESD valves, nuclear interlocks); for SIL 2 applications, consider HIMA’s F3330 module or competitor SIL 2 products.
2. Environmental & Diagnostic Requirements: Select HIMA F3334 for extreme temperature environments or systems requiring contact weld detection; standard DO modules lack these advanced features.
3. System Compatibility: Opt for HIMA F3334 if integrating with HIMA HIMax/HIMatrix SIS to ensure seamless communication and redundancy support; third-party modules may require custom interface hardware.

6.2 Precautions

1. Installation Guidelines:
   • Install HIMA F3334 in HIMA-certified racks only; ensure proper grounding (≤4Ω) to minimize electromagnetic interference (EMI) with relay switching signals.
   • Use twisted-pair wiring for relay outputs, with surge suppression diodes for inductive loads (e.g., motors, valves) to extend contact life.
2. Configuration Notes:
   • Configure fail-safe modes (energize/de-energize) via HIMA Safety Workbench software to match application safety requirements (e.g., de-energize-to-close for ESD valves).
   • Enable contact weld detection and fault logging to track relay degradation over time—replace modules before contact wear exceeds 50% of rated life.
3. Troubleshooting:
   • For failed outputs: Check coil power, relay contact status (via LEDs), and load wiring; use Safety Workbench to verify module communication with the host controller.
   • For false fault alarms: Inspect for EMI (reposition cables away from power lines) or loose connections; recalibrate diagnostic thresholds if needed.
   • Hot-swapping: Follow HIMA procedures (deactivate the module via Safety Workbench) to avoid voltage spikes during replacement in redundant systems.
4. Maintenance:
   • Inspect relay contacts for pitting/wear every 2 years (or after 100,000 operations) and replace modules if contact resistance exceeds 100mΩ.
   • Test fail-safe switching functionality quarterly to ensure compliance with safety requirements (e.g., valve closure within 50ms of power loss).
   • Stock spare HIMA F3334 modules for critical applications—lead times for SIL 3-certified components may exceed 6 weeks.

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