3721 TRICONEX Product Introduction
TRICONEX 3721 is a high-integrity Triple Modular Redundant (TMR) digital output module, purpose-built for safety-critical industrial control and safety instrumented systems (SIS). Engineered for reliable operation in high-risk environments including oil & gas, petrochemical processing, and power generation, it executes safe actuation commands for emergency shutdown (ESD), burner management, and fire & gas systems. Built on TMR architecture, each output channel uses three independent processing paths with 2oo3 voting logic to prevent false or missed trips, even with a single component failure. It supports hot-swappable installation and full self-diagnostics, enabling maintenance without system downtime, and complies with strict IEC 61508 SIL 3 safety standards for mission-critical applications.
TRICONEX 3721
TRICONEX 3721 Technical Specifications
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Product Model: 3721
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Product Type: TMR Digital Output Module (TRICONEX Safety System Series)
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Output Channels: 16 independent source-type transistor output channels
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Output Voltage: 20–32 V DC (nominal 24 V DC)
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Per-Channel Load Current: Up to 100 mA per channel
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Total Module Current: Maximum 1.2 A
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Redundancy Architecture: Triple Modular Redundant (TMR) with 2oo3 voting
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Protection Features: Short-circuit, overcurrent, and reverse polarity protection
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Operating Voltage: 24 V DC safety-rated power
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Operating Temperature: 0°C to +60°C
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Safety Rating: IEC 61508 SIL 3 certified
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Mounting: Hot-swappable for TRICONEX standard chassis/backplanes
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