F3331 HIMA

Key Technical Specifications

Product Model: F3331
Manufacturer: HIMA
System Platform: Compatible with HIMA HIMatrix and HIMax Safety Controllers
Digital Input Channels: 16 (configurable for sink/source inputs)
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), 12W (max load)
Response Time: <15 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 F3331 is a high-integrity digital I/O safety module designed for use in Safety Instrumented Systems (SIS). It integrates 16 digital inputs and 16 digital outputs, making it an ideal solution for safety-critical applications that require reliable input-output handling in accordance with SIL3 certification standards.

System Role:

The F3331 module serves as a vital interface in a safety system, managing signals from safety devices and actuators. The 16 inputs monitor field sensors, such as pressure or temperature switches, while the 16 relay outputs control critical actuators like emergency shutdown valves or alarms. This module is essential for ensuring the rapid response of safety functions in hazardous conditions, maintaining system integrity in real-time.

Core Technology:

The F3331 employs robust safety technologies, including fail-safe relay outputs, configurable input types, and channel-to-channel isolation, all designed to meet the rigorous demands of SIL3 systems. The channel isolation ensures that the failure of one input or output does not impact other signals, thus enhancing system reliability and fault tolerance. Furthermore, it integrates seamlessly with HIMA HIMatrix and HIMax controllers, which form the backbone of high-integrity safety systems in various industrial applications.

Engineering Value:

The primary value of the F3331 lies in its ability to provide 16 inputs and 16 outputs in a single module, reducing system complexity and saving valuable space on the control panel. The module’s SIL3 certification ensures that it can be relied upon for the most critical safety functions, such as emergency shutdown, pressure relief, and fail-safe operations, across industries like chemical manufacturing, oil and gas, and nuclear power.

Typical Application Scenarios:

Applied in chemical plants to manage emergency shutdown systems, controlling critical valves and sensors.
Used in oil and gas production for safety interlocks and emergency systems that protect personnel and equipment from hazardous conditions.
Installed in nuclear power plants to monitor and control reactor protection systems and ensure compliance with safety regulations.
Integrated into offshore platforms to manage fire detection systems and control shutdown devices for preventing oil spills or explosions.
Implemented in pharmaceutical manufacturing for SIL3-rated batch control systems, ensuring the safe operation of high-risk processes.

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