Key Technical Specifications

• Product Model: F3422
• Manufacturer: HIMA
• System Platform: Compatible with HIMA HIMatrix and HIMax Safety Controllers
• Digital Input Channels: 16 (configurable for sink/source)
• Digital Output Channels: 16 (relay outputs, dry contact)
• Input Voltage Range: 24V DC ±20%
• Output Voltage Range: 24V DC ±20%
• Current Rating (Input): 10 mA per channel
• Current Rating (Output): 0.5A per channel
• Power Consumption: 7W (no load), 10W (max load)
• Response Time: <20 ms for both input and output channels
• Certification Standards: SIL3 (IEC 61508, IEC 61511), ATEX, UL, CE
• Mounting: Rail-mounted (35mm DIN rail)
• Operating Temperature Range: -20°C to +60°C
• Enclosure Rating: IP20
• Isolation Voltage: 500V DC (channel-to-channel isolation)
• Communication Interface: HIMA backplane bus (direct connection to safety controllers)
• Status Indicators: LED indicators for input/output status and diagnostics
• Material: Flame-retardant plastic housing
• Weight: 550g

 

Technical Architecture & Functional Positioning

The HIMA F3422 is a high-integrity digital I/O safety module designed for use in Safety Instrumented Systems (SIS). This module integrates 16 digital inputs and 16 digital outputs, enabling high-speed, reliable control of critical safety devices in SIL3-certified applications. Its role is to ensure the safe operation of industrial processes by interfacing directly with field devices like sensors and actuators in safety-critical environments.

System Role:

The F3422 module plays a central role in managing safety inputs and outputs within an SIS. It collects signals from safety sensors (e.g., pressure switches, emergency stop buttons) and drives outputs to actuators or alarms, such as shutdown valves or fire suppression systems. Its SIL3 certification ensures the module is highly reliable and can be safely used in applications where human safety and asset protection are the top priorities.

Core Technology:

The F3422 utilizes fail-safe relay outputs, which ensure that any failure in the module defaults to a safe condition. The module features configurable input types (sink or source), making it flexible for various sensor configurations. Channel-to-channel isolation is another crucial feature, preventing a fault in one channel from affecting the others, which enhances system reliability and safety. The HIMA backplane bus enables seamless integration with HIMatrix and HIMax controllers, ensuring high-speed, error-free communication within the safety system.

Engineering Value:

This module simplifies system design by consolidating both 16 inputs and 16 outputs into a single unit, reducing wiring complexity and saving space on control panels. The SIL3 certification guarantees the module can meet the highest standards of industrial safety, making it ideal for applications in chemical plants, nuclear power stations, and offshore oil platforms.

 

Typical Application Scenarios:

• Applied in chemical processing facilities for monitoring and controlling safety shutdown valves and emergency stop circuits.
• Used in oil & gas platforms to manage safety interlocks, pressure relief valves, and emergency systems to protect personnel and equipment.
• Installed in nuclear power plants to handle reactor protection systems, ensuring that the reactor’s operational parameters remain within safe limits.
• Integrated into pharmaceutical manufacturing to manage critical safety functions in sterile environments where process integrity is crucial.
• Utilized in offshore platforms for controlling fire detection systems and safety critical alarms in harsh environmental conditions.

 

Quality Standards & Testing Procedures

Quality Philosophy:

HIMA prioritizes the integrity and reliability of our products, particularly in safety-critical applications. The F3422 module undergoes a comprehensive testing protocol to ensure it performs consistently under all environmental conditions and meets the stringent requirements for SIL3 safety certification. Every unit is rigorously tested to guarantee that it functions as expected, providing our customers with the confidence they need to rely on our products in high-risk environments.

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