HIMA F3331

Description

Product Description

Product Parameters

• Brand/Model: HIMA F3331
• Core Output Parameters
  • Number of Channels: 8 isolated digital output channels (1 channel per isolation group)
  • Output Type: Form A (SPST) electromechanical relays
  • Rated Voltage: 24V DC / 230V AC (configurable per channel)
  • Rated Current: 2A per channel (resistive load), 1A per channel (inductive load)
  • Switching Time: ≤10ms (make), ≤5ms (break)
  • 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: Relay contact status monitoring, overcurrent detection, power supply fault alerts
  • 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 ≤ 4W
  • 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

1. SIL 3-Certified Fail-Safe Design: HIMA F3331 uses electromechanical relays with inherent fail-safe operation (contacts open on power loss), critical for safety-critical applications like emergency shutdown valves. Its SIL 3 certification ensures compliance with the highest safety integrity requirements for industrial processes.
2. Per-Channel Isolation & Diagnostics: Each channel of HIMA F3331 is independently isolated, preventing cross-channel interference and fault propagation. Real-time diagnostics monitor relay contact wear, overcurrent conditions, and power supply status, sending alerts to the SIS controller to enable predictive maintenance and reduce unplanned downtime.
3. Dual Voltage Compatibility: Supporting both 24V DC and 230V AC output, HIMA F3331 provides flexibility to control a wide range of field actuators (e.g., low-voltage valves, high-voltage pumps) without requiring additional modules, simplifying system design and reducing costs.
4. Extreme Environmental Tolerance: Operating in -40°C to +70°C and withstanding 15g vibration/50g shock, HIMA F3331 performs reliably in harsh industrial environments, including offshore platforms, desert refineries, and nuclear power plant auxiliary facilities.

Application Fields & Cases

1. LNG Plant Emergency Shutdown (ESD) Valves: A major LNG terminal deployed HIMA F3331 modules in its HIMatrix SIS to control ESD valves for cryogenic storage tanks. The module’s fail-safe relay design ensured valves closed automatically during a power outage, preventing LNG leakage, while ATEX certification supported operation in the terminal’s hazardous environment.
2. Chemical Plant Reactor Relief Valve Control: A petrochemical plant integrated HIMA F3331 into its reactor safety system to trigger relief valves and emergency cooling pumps during overpressure events. The module’s 1ms response time (signal processing) enabled rapid actuator activation, avoiding a reactor rupture and potential environmental incident.
3. Nuclear Power Plant Auxiliary Cooling System: A nuclear power plant used HIMA F3331 to control auxiliary cooling pumps and isolation valves for its reactor containment system. The module’s shock resistance (50g) and wide temperature range ensured reliable operation during seismic events, complying with strict nuclear safety regulations.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: HIMA F3331 is the optimal choice for HIMA HIMatrix users requiring SIL 3-certified, fail-safe digital outputs for hazardous or high-risk applications (e.g., ESD systems, nuclear auxiliary controls). For high-density output needs (16 channels), HIMA F3332 is recommended. Non-HIMA system users may prefer Triconex 3664 for high channel density or Siemens S7-400F for PROFINET integration.
2. Precautions:
   • Match relay output voltage/current ratings to connected actuators (e.g., 230V AC for pumps, 24V DC for valves) to avoid relay damage or actuator malfunction.
   • Use shielded cables for output wiring to minimize EMI interference and prevent false relay triggering in noisy industrial environments.
   • Regularly inspect relay contact status via SILworX diagnostics (quarterly) to replace worn relays before failure, especially in high-cycle applications.
   • Ensure the module is grounded to HIMA specifications (≤4Ω ground resistance) to maintain isolation integrity and safety certification.
   • Avoid exceeding inductive load ratings (1A per channel) to prevent relay contact arcing and premature failure.

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