Model Interpretation

4409: Safety Management/Communication Module, TMR, SIL3, multi‑protocol

P/N: 3000xxx series

Family: 4409 (safety comms processor; vs 4329 NCM, 4351B/4352A TCM)

Compatibility: Tricon 8110/8111/8112 chassis; hot‑swappable; TMR/non‑TMR

Key Distinction: Combines safety logic processing + multi‑protocol communication in one module; optimized for high‑integrity SIS workflows.

Technical Parameters

Electrical & Power

Power: 24VDC (backplane, 20.4–28.8VDC), 1.2A max, ~6W

Isolation: 500VDC port‑to‑backplane; galvanic isolation for all interfaces

Redundancy: TMR 2oo3 voting; supports dual‑network redundancy

Communication Interfaces

Ethernet (2×RJ45, 10/100 Mbps):

NET 1: Safety network (peer Tricons, TSAA, time sync)

NET 2: Open network (DCS, OPC, TriStation, SOE)

Protocols: Modbus TCP, TSAA, SNTP, OPC UA

Serial (4×DB‑9, RS‑232/422/485):

Speed: Up to 115.2 kbps per port

Protocols: Modbus RTU/ASCII, TriStation, custom serial

Fieldbus (Optional): FOUNDATION Fieldbus, PROFIBUS DP (varies by firmware)

Mechanical

Form Factor: 3U, 19” rack, 1 slot

Dimensions (W×H×D): 483 × 127 × 305 mm

Weight: ~2.3 kg

Environmental

Operating Temp: 0°C to +60°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: IEC 61508 SIL3, TÜV, UL, CE, ATEX, FM

Diagnostics & Indicators

LEDs: PASS, FAULT, ACTIVE, LINK1, LINK2, TX/RX per serial port

Monitoring: TMR voting health, link status, error counters, time sync

Protection: ESD, surge, short‑circuit, overtemperature

Core Functions

Integrated Safety Logic + Communication

Executes SIL3 safety logic (ESD/F&G/BMS) while managing bidirectional data exchange with external systems—eliminating separate controller/communication modules.

Multi‑Protocol Industrial Connectivity

Simultaneously supports Modbus TCP (Ethernet) and Modbus RTU (serial) plus TSAA for peer Tricon communication; connects DCS, HMI, PLCs, and legacy serial devices.

TMR Fault Tolerance for Safety

Triple Modular Redundancy (2oo3 voting) ensures no single‑point failure; all safety data paths comply with SIL3.

Hot‑Swap & Redundant Networking

Online replacement without shutdown; dual Ethernet ports support network redundancy for maximum uptime.

System Diagnostics & SOE

Enables SOE logging, remote diagnostics, and TriStation programming; propagates system alarms to external hosts.

Applications

Oil & Gas: Offshore ESD/F&G; safety logic + DCS communication in one module

Chemical/Refining: High‑integrity BMS/ESD; peer Tricon sync + serial device integration

Power Generation: Boiler BMS/Turbine TMC; safety logic execution + SCADA connectivity

Legacy System Upgrades: Replacing discrete 4329+CPU setups with a single integrated module.