Hima F3334 Digital Input Module

The HIMA F3334 Digital Input Module is a high-performance, safety-rated input interface designed for use in HIMA’s HIQuad safety systems. It provides secure and reliable acquisition of digital signals from field devices such as push buttons, limit switches, relay contacts, and other binary input sources. The F3334 is built to meet strict SIL3 requirements (Safety Integrity Level 3) according to IEC 61508, making it suitable for use in safety-critical applications in the process and automation industries.

Each F3334 module offers 16 isolated input channels, supporting a wide input voltage range. Its robust design allows it to withstand harsh environmental conditions, including electrical noise, vibration, and temperature variations. The module features comprehensive diagnostic capabilities, such as wire-break and short-circuit detection, ensuring not only the functionality but also the integrity of the input signals at all times. Integration into the HIQuad safety system is seamless, supporting hot-swap and online diagnostics without shutting down the plant.

Technical Specifications

Applications

The HIMA F3334 module is specifically engineered for use in high-reliability safety systems, typically found in process automation. Its role in these systems is to gather binary input signals with high integrity and communicate them to safety controllers for logic processing and protective action.

Typical application scenarios include:

• Emergency shutdown systems (ESD)

• Fire and gas detection systems (F&G)

• Turbine control and monitoring systems

• Boiler and burner management systems

• Petrochemical and refinery automation

• Pipeline monitoring and compressor stations

• Pharmaceutical and chemical production plants

• Substations and power generation systems

Due to its SIL3 certification and reliable design, it is especially suited to environments where any signal failure could pose a risk to life, the environment, or expensive equipment.

Advantages

• SIL3-certified reliability ensures the highest standards for functional safety.

• 16 isolated digital input channels enable compact and efficient system design.

• Built-in diagnostics for wire-break and short-circuit detection improves plant availability.

• Hot-swappable design allows for module replacement without shutting down the system.

• Robust mechanical design suitable for challenging industrial environments.

• Low power consumption supports energy-efficient system operations.

• Seamless integration with HIMA HIQuad and HIMax safety platforms.

• DIN rail mounting simplifies panel installation and maintenance.

• Real-time diagnostics provide early warning of system degradation or faults.

• Proven field performance in thousands of installations globally.

FAQ

1. What is the primary function of the HIMA F3334?

   It collects digital (binary) signals from field devices and transfers them to a HIMA safety controller.

2. How many channels does the F3334 module have?

   It offers 16 individual, isolated digital input channels.

3. Is the module suitable for SIL3 applications?

   Yes, it fully complies with SIL3 safety standards per IEC 61508.

4. Can the F3334 module be replaced during system operation?

   Yes, it supports hot-swapping without the need to power down the system.

5. What diagnostics are available on this module?

   It provides real-time detection of wire breaks, short circuits, and voltage irregularities.

6. What is the voltage range supported for inputs?

   The input voltage range is from 18 to 30 V DC, nominally 24 V DC.

7. Is the F3334 compatible with all HIMA systems?

   It is primarily compatible with HIQuad and HIMax systems.

8. How is the module powered?

   It draws its operating power from the system’s backplane connection.

9. Does it offer signal filtering or debounce?

   Yes, it includes configurable filtering for signal debounce.

10. What industries typically use the F3334?

    It is used in oil & gas, petrochemical, power generation, pharmaceutical, and other high-integrity automation sectors.