The TRICONEX 3401 Digital Output Module is a 16-channel TMR (Triple Modular Redundancy) module specifically designed for Safety Instrumented Systems (SIS), seamlessly integrating into the Trident safety system. It receives data from the main processor through three independent channels and employs a patented Quad Voter circuit to ensure the safety and reliability of output signals, maintaining normal system operation even in the event of a single-channel failure. The module supports hot-swapping for easy replacement during system operation and features comprehensive diagnostic capabilities to monitor channel status in real time, providing a stable and secure digital output solution for industrial automation control.
Technical Specifications (TRICONEX 3401 Digital Output Module)
Output Channels: 16 commoned outputs, supporting a triple modular redundancy (TMR) architecture where each channel independently receives and votes on data from the main processor.
Voting Mechanism: Utilizes the patented Quad Voter circuit to achieve "two-out-of-three" voting via parallel-series paths, ensuring the accuracy and safety of output signals.
Diagnostic Functions: Features continuous channel diagnostics capable of detecting stuck switches, drive circuit failures, etc., activating system alarms in the event of faults.
Electrical Connections: Supports a nominal output voltage of 24VDC, is compatible with an operating range of 15-30VDC, and has self-limiting output current functionality.
Key Features and Advantages (TRICONEX 3401 Digital Output Module)
High-Reliability Redundancy Design: The TMR architecture combined with the patented voting circuit ensures reliable system operation even in the event of single or multiple channel failures, enhancing system availability.
Comprehensive Fault Diagnostics: Monitors the status of each channel in real time, capable of detecting stuck output points and other faults within 500 milliseconds to reduce system downtime.
Hot-Swap Functionality: Supports module replacement while the system is running without shutdown, maximizing production efficiency.
Wide-Range Adaptability: Adapts to an output voltage range of 15-30VDC, with self-limiting output current in different modes to enhance system compatibility.
Safety Integrity Level: Achieves SIL3 (IEC 61508), meeting the requirements of high-safety industrial applications.
Technical Parameters
Output Voltage：Nominal 24VDC, operating range 15-30VDC, absolute maximum output voltage 33VDC, reverse input voltage -0.6VDC.
Output Current：Typical value 3.0A in switching state, self-limiting maximum 4.8A; typical value 1.5A in degraded mode, self-limiting >0.7A.
Electrical Characteristics：Load leakage current <1mA in off state, voltage drop <1.0VDC @1.5A in on state, loop scan time <1.0ms for all 16 points.
Isolation Characteristics：Isolation voltage ≥500VDC between functional ground and protective ground, isolation voltage ≥800VDC between functional grounds (logic).
Environmental Adaptability：Operating temperature -20°C to +70°C, storage temperature -40°C to +85°C, relative humidity 5%-95% (non-condensing).
Application Fields
Emergency Shutdown System：Used in chemical, petroleum and other industries to cut off power to hazardous equipment in emergencies, preventing accident escalation.
Process Control：Controls the start and stop of actuators such as valves and motors to ensure stable operation of industrial production processes.
Safety Interlock System：Works with sensors, relays and other devices to achieve safety interlock control between equipment, protecting personnel and equipment.
Turbine Machinery Control：Monitors and controls the operating status of turbine machinery (e.g., steam turbines, compressors) to maintain optimal performance.
Fire & Gas Detection System：Activates corresponding fire-fighting equipment or shuts down equipment in hazardous areas when detecting dangers such as fires or gas leaks.
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