Triconex 3805E TMR Analog Output Module

Technical Specifications

Model:3805E

Brand:Triconex

Product Type:TMR triple modular redundant analog output module

Channel Count:8 analog output channels,common‑return non‑isolated

Output Signal:4‑20mA DC,+6% over‑range(0‑21.2mA)

Resolution:12‑bit

Accuracy:＜0.25%FSR @0‑60℃

Max Loop Voltage:+42.5VDC continuous over‑range protection

Load Requirement:250‑1000Ω external load

Leg Failure Switch Time:Typical＜10ms

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

Safety Level:SIL3 IEC61508 TÜV certified

Feature:Hot‑swap supported,comprehensive channel self‑diagnosis,front‑panel PASS/FAULT/ACTIVE LED indicator

System Compatibility:Tricon SIS rack

Remark:Must install inside Tricon rack,match Tricon CPU,power supply and backplane;legacy EOL spare component

Module Form:Standard rack plug‑in module

Weight:4.0 kg

Dimension:490 mm×453 mm×68 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 ESD safety interlock system,drive control valves,positioners and other 4‑20mA field actuators,system maintenance and spare‑part replacement.

Product Details

3805E is TMR triple‑modular‑redundant analog output module for Triconex Tricon safety instrumented system. It converts internal safety logic digital signals into 4‑20mA analog field signals for process control valve and positioner driving.

8‑channel common‑return output without channel‑channel isolation; adopts 2oo3 hardware voting mechanism,each channel processed by three independent circuit paths; when single leg fault occurs,the module switches within 10ms to maintain normal output without unsafe state. 12‑bit resolution,＜0.25% full‑scale accuracy ensures stable analog control performance.

Hot‑swap design allows module replacement without SIS system shutdown. Front‑panel LED displays module running,fault and channel active status,with built‑in channel diagnostic function. External load resistance shall be kept within 250‑1000Ω to guarantee output performance. Widely deployed in petrochemical,oil‑gas and thermal‑power SIS safety racks for safety‑related analog control loop.

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