Description
1. Basic Information
| Item | Content |
|---|---|
| Model | T8111C |
| Series | Trusted T8000 TMR Triple‑Redundant Safety Control System |
| Product Type | Main Processor CPU Module |
| Safety Certification | IEC61508 SIL3, 2‑out‑of‑3 voting architecture |
| Special Feature | Version‑C: G3 grade conformal coating, resistant to hydrogen sulfide, salt spray and humid corrosive atmosphere |
| Installation | Slot‑mount in dedicated Trusted chassis, hot‑swap supported |
| Manufacturer | ICS‑Triplex (Rockwell Automation) |
2. Hardware Specifications
-
Power Supply
‑ Backplane supply: 20‑32 VDC (nominal 24 VDC), dual redundant backplane power; power consumption approx. 75‑82 W
-
Processor & Memory
‑ Three independent NXP PowerQUICC II processors for lock‑step synchronous TMR operation;
‑ Application memory: 960 KB; SOE sequence‑of‑event circular buffer: 1000 events; Battery‑backed NVRAM retains programs, faults and SOE logs during power loss.
-
Communication Interfaces
‑ Backplane IMB TMR bus for local and expansion I/O rack management;
‑ Ethernet, RS232 debug port, RS485; supports Modbus TCP and Trusted proprietary protocol for engineering workstation, HMI and DCS connection.
-
Environmental Conditions
‑ Operating temperature: ‑40℃ ~ +85℃ (higher upper limit than T8110C);
‑ G3 conformal coating for chemical corrosion and offshore salt‑spray environments; IP20 (inside cabinet).
3. Key Functions
- TMR Triple‑Modular Redundancy 2‑out‑of‑3 Voting: Three processors operate synchronously. Single‑channel faults are isolated automatically without system shutdown. Hot‑swap module replacement online.
- Comprehensive Hardware Self‑diagnosis: Real‑time diagnostics for CPU, memory, communication and backplane; timestamped fault logging; front‑panel LED indicators (Health, Run, Fault).
- Safety Logic Execution: Supports IEC61131‑3 (Ladder Diagram, Structured Text) for ESD emergency shutdown, F&G fire‑gas interlock, BMS boiler management and turbine protection logic.
- SOE Sequence‑of‑Event Logging: Built‑in circular buffer for 1000 events to support incident post‑mortem analysis.
- Redundancy Configuration: Supports active‑standby dual‑CPU hot‑standby mode to improve system availability.
4. Typical Applications
‑ Fire & Gas (F&G) systems, boiler BMS, turbine overspeed protection
‑ SIS safety instrumented systems under high‑corrosion, salt‑spray and high‑temperature conditions
‑ High‑risk safety interlock scenarios in petrochemical, oil‑gas and power industries
5. Important Notes
- Firmware version must strictly match all I/O modules in the system. Mismatched firmware may trigger voting faults and system shutdown. Verify firmware build number when replacing spares.
- T8111C is not equivalent to T8110C. T8111C has conformal coating, higher temperature rating up to +85℃ and larger SOE buffer for offshore/corrosive service. Do not mix‑replace with T8110C without validation.
- NVRAM depends on on‑board battery. Data may be lost upon battery ageing; periodic battery replacement is required.
- Compatible only with dedicated Trusted chassis; not for standard PLC racks.
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