Description
Product Description
HIMA F3349 is a high-performance digital output module belonging to HIMA’s HIMatrix safety instrumented system (SIS) portfolio, engineered to deliver fail-safe control signal output for mission-critical industrial applications including oil & gas processing, chemical manufacturing, and power generation. HIMA F3349 integrates 4 isolated digital output channels with solid-state relay (SSR) technology, enabling fast, reliable switching of high-power field actuators (e.g., motor starters, solenoid valves, heating elements) while maintaining compliance with IEC 61508 SIL 3 safety standards. HIMA F3349 features advanced diagnostic capabilities, wide voltage compatibility, and rugged design for operation in harsh environments, making it a critical component for safety interlock systems requiring rapid response and high load capacity. Additionally, HIMA F3349 supports hot-swappable installation and seamless integration with HIMA’s SILworX configuration software, minimizing maintenance downtime and simplifying system setup. As a key module in HIMA’s safety solutions, HIMA F3349 ensures precise, fail-safe control to protect personnel, assets, and the environment.
Product Parameters
- Brand/Model: HIMA F3349
- Core Output Parameters
- Number of Channels: 4 isolated digital output channels (1 channel per isolation group)
- Output Type: Solid-state relays (SSR) with zero-cross switching
- Rated Voltage: 24-230V AC/DC (universal voltage compatibility)
- Rated Current: 5A per channel (resistive load), 2A per channel (inductive load)
- Switching Time: ≤1ms (turn-on/off)
- Isolation: Channel-to-channel isolation (2500V AC), module-to-backplane isolation (3000V AC)
- System & Diagnostic Parameters
- Compatible Systems: HIMA HIMatrix F3/F4, HIMA Safety Manager
- Diagnostic Functions: SSR overload detection, thermal monitoring, short-circuit protection, 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 ≤ 6W
- 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
- Universal Voltage Compatibility & High Load Capacity: HIMA F3349 supports 24-230V AC/DC output and 5A resistive load per channel, enabling control of a wide range of high-power actuators (e.g., industrial motors, heating systems) without additional modules. This versatility reduces system complexity and installation costs.
- SIL 3 Certification & SSR Reliability: With IEC 61508 SIL 3 certification and zero-cross switching SSRs, HIMA F3349 eliminates contact arcing (a common failure point in electromechanical relays) and ensures fast, bounce-free switching—critical for safety-critical applications requiring rapid response to process anomalies.
- Advanced Thermal & Overload Diagnostics: HIMA F3349 monitors SSR temperature and load current in real time, triggering alerts for overloads or overheating before component failure. This predictive diagnostic capability minimizes unplanned downtime and extends module service life.
- Extreme Environmental Tolerance: Designed to operate in -40°C to +70°C and withstand 15g vibration/50g shock, HIMA F3349 performs reliably in harsh industrial environments, including offshore platforms, desert refineries, and high-vibration manufacturing facilities.
Application Fields & Cases
- Oil Refinery Heater Control System: A major oil refinery deployed HIMA F3349 modules in its HIMatrix SIS to control high-power heater elements in crude oil distillation units. The module’s 5A load capacity and universal voltage compatibility simplified actuator integration, while thermal diagnostics prevented SSR overheating during peak operation, avoiding a costly heater shutdown.
- Chemical Plant Motor Starter Safety Interlock: A petrochemical plant integrated HIMA F3349 into its reactor safety system to control motor starters for agitator and pump systems. The SSR zero-cross switching eliminated contact wear, and SIL 3 certification ensured compliance with safety regulations, while the 1ms switching time enabled rapid motor shutdown during process anomalies.
- Power Plant Boiler Auxiliary System Control: A coal-fired power plant used HIMA F3349 to control solenoid valves and fan motors in its boiler auxiliary systems. The module’s wide temperature range (-40°C ~ +70°C) and vibration resistance ensured reliable operation in the boiler room environment, and hot-swappable design allowed maintenance during peak power generation hours.
Competitor Comparison
| Comparison Dimension | HIMA F3349 | Competitor 1 (Triconex 3664) | Competitor 2 (Siemens S7-400F DO Module) |
|---|---|---|---|
| Output Type | Solid-state relay (SSR) | Electromechanical relay | Electromechanical relay |
| Rated Current | 5A per channel | 2A per channel | 2A per channel |
| Voltage Compatibility | 24-230V AC/DC | 24V DC only | 24V DC only |
| SIL Certification | SIL 3 | SIL 3 | SIL 2 |
| Switching Time | ≤1ms | ≤10ms | ≤5ms |
| Core Advantages | High load capacity, SSR reliability, universal voltage | High channel density, TMR integration | Siemens TIA portal compatibility |
Selection Suggestions & Precautions
- Selection Suggestions: HIMA F3349 is the optimal choice for HIMA HIMatrix users requiring high-power, SIL 3-certified digital outputs for controlling motors, heaters, or other high-load actuators. For low-power applications (≤2A), HIMA F3331 (electromechanical relay) is a cost-effective alternative. Non-HIMA system users may prefer Triconex 3664 for high channel density or Siemens S7-400F for PROFINET integration.
- Precautions:
- Ensure inductive loads (e.g., motors) are paired with surge suppressors to protect SSRs from voltage spikes during switching.
- Do not exceed the module’s rated current (5A resistive/2A inductive) to prevent SSR overheating and failure.
- Use shielded cables for output wiring to minimize EMI interference and ensure stable SSR operation.
- Regularly review diagnostic data via SILworX software to monitor SSR temperature and load levels, scheduling maintenance for degraded channels before failure.
- Verify compatibility with HIMA HIMatrix system firmware (V3.0+) to ensure full diagnostic and communication functionality.

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