Triconex 3301 TMR Digital Input Module

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Technical Specifications

Model:3301(DI3301)

Brand:Triconex

Product Type:TMR triple modular redundant digital input module

Channel Count:32 commoned digital input channels

Nominal Input Voltage:24VDC

Operating Voltage Range:15‑30VDC,absolute maximum 33VDC

Input Threshold:Logic low 0‑5VDC；transition 6‑14VDC；logic high 15‑30VDC

Input Delay:＜10ms (ON‑OFF / OFF‑ON)

Input Impedance:＞30kΩ(without baseplate),≈3kΩ(with matched baseplate)

Power Consumption:＜10W

Isolation:500VDC functional‑earth isolation

Architecture:2‑out‑of‑3 TMR hardware voting,three independent signal processing paths

Diagnosis:FVD force value diagnostic,continuous per‑channel self‑diagnosis

Safety Level:SIL3 IEC61508 TÜV certified

Feature:Hot‑swap supported,hot‑spare standby module compatible,front‑panel PASS/FAULT/ACTIVE LED plus per‑point channel indicator

System Compatibility:Triconex Trident SIS system;mating baseplate 2301 / 2304

Remark:Must install with matched baseplate;legacy EOL spare component

Module Form:Standard rack plug‑in module

Weight:2.00 kg

Dimension:267 mm×107 mm×302 mm

Protection Grade:IP20

Certification:SIL3,TÜV,CE

Working Temperature:‑40℃ ~ +70℃,non‑condensing

Storage Temperature:‑40℃ ~ +85℃

Humidity:5%‑95% non‑condensing

Application:Petrochemical,oil & gas,power plant SIS safety system,collect field switch,limit switch,E‑stop,valve position feedback signal,system maintenance and spare‑part replacement.

Product Details

3301 also named DI3301,is TMR triple‑modular‑redundant digital input module for Triconex Trident SIS safety instrumented system. It collects discrete switching signals from field devices and sends voting‑processed data to main processor.

32‑point common‑reference input design,high‑density channel layout saves cabinet space. Adopts 2oo3 hardware voting mechanism,three independent circuit paths process field signals respectively,single‑path hardware fault will not affect module normal operation. Supports FVD forced‑value diagnostic function for channel fault detection. Supports hot‑spare redundant backup configuration.

Hot‑swap design allows module replacement without SIS system shutdown. Front‑panel multi‑LED indicates module running,fault,active and per‑point channel status. Must cooperate with dedicated baseplate 2301 or 2304 for field wiring. Widely deployed in petrochemical,oil‑gas and thermal‑power Trident SIS safety racks for mass discrete signal collection.

Note:This is legacy EOL spare component,widely used for safety system spare‑part replacement.