Description
ICS TRIPLEX T8471C Trusted TMR Digital Output Module
Product Overview
T8471C is a conformal‑coated 32‑channel 120 VDC digital output module for Rockwell ICS TRIPLEX Trusted safety‑instrumented system (SIS). It adopts Triple Modular Redundancy (TMR) 2‑out‑of‑3 voting architecture, delivers safe discrete output signals to field solenoid valves, relays and trip circuits. The suffix ‑C denotes conformal coated PCB for corrosive, high‑humidity cabinet environments. This module installs in Trusted system chassis and works with corresponding FTA termination assemblies. It carries SIL 3 safety certification for critical process safety applications.
Typical Applications
- Emergency Shutdown System (ESD): Solenoid valve driving for process plant emergency trip loops
- Fire & Gas (F&G) safety system: Output for alarm relays, fire suppression trigger and interlock circuits
- Burner Management System (BMS): Safety‑related discrete output for furnace and boiler protection
- HIPPS high‑integrity pressure protection system: Safety valve actuation control
- Oil & gas, petrochemical, refinery, chemical and power‑plant safety‑instrumented systems
- Brown‑field spare‑part replacement and system expansion for existing Trusted SIS installations
T8471C
Specifications & Technical Parameters
| Item | Specification |
|---|---|
| Model | T8471C |
| Module Type | 32‑Channel TMR Digital Output Module |
| Rated Field Voltage | 120 VDC (90‑140 VDC operating range) |
| Channel Count | 32 digital output channels |
| Redundancy Architecture | Triple Modular Redundancy (TMR), 2oo3 voting |
| Conformal Coating | Yes (‑C coated version) |
| Safety Certification | TÜV certified SIL 3 per IEC 61508 |
| Hot‑swap Support | Yes, online replacement without system shutdown |
| Status Indication | Front‑panel LED indicators for module health and channel diagnostics |
| Compatibility | Trusted system chassis, matching FTA field termination assemblies |
| Operating Temperature | ‑20 ℃ ~ +60 ℃ |
| Humidity | 5 %‑95 % RH, non‑condensing |
| Mounting | Plug‑in for Trusted series rack chassis |
| Protection Class | IP20 (cabinet‑only installation) |
| Weight | Approx. 2.05 kg |
| Related Variant | T8471CX: Non‑RoHS variant of T8471C |
Key Features & Benefits
- TMR triple‑modular‑redundant voting: 2‑out‑of‑3 hardware voting eliminates single‑point‑of‑failure, meets SIL 3 safety integrity requirements for safety‑instrumented systems.
- Conformal‑coated PCB: Enhanced moisture‑resistant and anti‑corrosion performance, suitable for coastal, high‑humidity and corrosive cabinet environments.
- 32‑channel high‑density output: Large‑channel‑count discrete safety outputs, optimizes cabinet space for complex safety‑loop projects.
- Hot‑swappable design: Module can be replaced online while the safety system keeps running, reduces plant downtime during maintenance.
- Comprehensive built‑in diagnostics: Circuit fault detection, channel‑level fault indication via front‑panel LEDs, simplifies on‑site troubleshooting.
- Seamless Trusted platform integration: Direct plug‑and‑play with Trusted chassis, matches dedicated FTA termination hardware for field‑wiring connection.
- Proven process‑industry safety hardware: Widely deployed in ESD, F&G, BMS and HIPPS safety‑critical loops across oil‑gas and chemical industries.
Related Trusted Series‑Family Models
ICS TRIPLEX Trusted SIS I/O module portfolio
- T8471C: 32‑CH 120 VDC TMR digital output module (conformal coated, target model)
- T8471CX: Non‑RoHS variant of T8471C
- T8403: 24 VDC digital input module
- T8423: 24 VDC digital output module
- T8461: Analog input module
- T8480: Communication interface module
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