Triconex 3301

Description

• Model:​ Triconex 3301 (DI3301, TMR Digital Input Module)
• Product Type:​ Triple Modular Redundancy (TMR) safety-rated digital input module
• I/O Channels:​ 32 commoned digital input channels
• Configurable Operation:​ Single or dual-channel
• Input Signal Types:​ Digital signals (switch states, relay outputs, limit switches), AC/DC signals, high-speed pulse signals
• Voltage Range:​ Operational 15–30 VDC; Nominal 24 VDC; Absolute max 33 VDC; Reverse -0.6 VDC
• Input Impedance:​ >30 kΩ without baseplate; ≈3 kΩ with baseplate
• Response & Scan Time:​ Input delay <10 ms; ADC scan time <1 ms for all 32 points
• Isolation Voltage:​ ≥500 VDC (functional earth to protective earth); ≥800 VDC (functional to logic ground)
• Redundancy & Configuration:​ TMR architecture with 2oo3 voting; hot-swappable; TriStation 1131 configurable
• Power Requirements:​ 24 VDC (15–30 VDC compatible); 0.2 W/pt (@24VDC), 0.5 W/pt (@33VDC)
• Protection:​ Overcurrent, overvoltage, reverse-polarity protection
• Operating Temperature:​ -40 °C to 85 °C
• Storage Temperature:​ -65 °C to 90 °C
• Relative Humidity:​ 5%–95% non-condensing
• Physical:​ Standard Tricon rack mounting; weight approx. 1.42 kg; mechanically keyed
• Protection Level:​ IP20 (installed in NEMA enclosure)
• Supporting Software:​ TriStation 1131 Engineering Software
• Compatible Systems:​ Tricon v8/v9/v10 racks, MP3008/MP3009 main processors
• Special Features:​ TMR redundancy, FVD diagnostics, hot swap, channel isolation, low power consumption, mechanical keying

• Triple modular redundant architecture with 2oo3 voting ensures highest safety integrity
• Force-to-Value Diagnostic (FVD) with <2 ms test time continuously validates channel health
• Hot-swappable design allows replacement without system shutdown
• Mechanical keying prevents incorrect module insertion
• Comprehensive channel isolation protects against ground faults and transients
• Full compatibility with TriStation 1131 engineering software

• Emergency Shutdown (ESD) systems in oil & gas and petrochemical plants
• Pharmaceutical production equipment switch status monitoring
• Mining equipment switch signal collection for production safety
• Turbine and compressor protection systems
• Any SIL 3 safety instrumented function requiring high-speed digital input acquisition

• Install in Tricon v8/v9/v10 racks with compatible 2301 baseplates
• Verify 24 VDC power supply within 15–30 VDC range
• Ensure mechanical keying aligns correctly with the baseplate
• Mount within a NEMA enclosure to achieve IP20 protection
• Ground the functional earth separately from protective earth per isolation requirements

• Maximum input toggle rate to maintain diagnostic fault coverage is <20 transitions per second
• FVD off-state glitch duration is <2 ms with magnitude approximately 36% of test voltage
• Module is hot-swappable but replacement must match exact firmware and configuration
• Regularly monitor PASS/FAULT/ACTIVE LED indicators for diagnostic status