ICS TRIPLEX T8111C (Trusted TMR Security Processor Module)
The core triple redundant (TMR) processor of the ICS TRIPLEX (Rockwell) Trusted system, with SIL3 level, is responsible for critical safety controls such as ESD emergency shutdown and SIS safety interlocking. It is commonly used in high-risk scenarios of chemical, oil and gas, and power industries.

1、 Model and Identity
Model: T8111C
Brand: ICS TRIPLEX (now part of Rockwell Automation)
Series: Trusted TMR (Triple Redundancy) Security System
Type: Core Processor Module (Controller)
Core certifications: IEC 61508 SIL3, T Ü V, CE, UL
2、 Core functions
Triple redundant TMR architecture (3-2-0 fault tolerance): Three independent CPUs perform synchronous operations and hardware voting, with no interruption in case of a single failure, achieving zero downtime fault tolerance.
Safety logic operation: Execute safety critical controls such as ESD emergency shutdown, SIS interlocking, combustion management, pressure/temperature protection, etc.
Full system diagnosis: real-time self check and fault reporting of processor, memory, communication, and I/O channels, supporting online hot plug maintenance.
Redundant communication: Dual Ethernet+dedicated TMR bus, connecting I/O modules (such as T8310) with upper level monitoring, data synchronization without disturbance.
Programming configuration: Comes with Control Studio software, supports function blocks/ladder diagrams, online monitoring and modification.
3、 Hardware specifications
1. Performance and redundancy
Architecture: Triple Modular Redundancy (TMR), 3CPU synchronous voting
Safety level: SIL3 (IEC 61508)
Computing speed: approximately 1000 MIPS
Memory: Built in program+data storage, supports power-off hold
2. Electrical and Environmental
Power supply: 24VDC ± 20%, dual redundant power input
Power consumption: approximately 50W
Temperature: -40 ℃ to+70 ℃ (industrial wide temperature range)
Humidity: 0% to 95% (no condensation)
Size: Approximately 270 × 303 × 90mm (standard rack)
Weight: Approximately 1.92kg
3. Interface
Ethernet: 2 × 10/100Mbps (Modbus TCP/IP, upper communication)
TMR bus: dedicated redundant bus (connecting I/O modules, such as T8310)
Debugging port: RS-232/RS-485 (local configuration/diagnosis)
4、 Typical applications
Petrochemical industry: reactor/hydrogenation unit ESD, safety valve interlock, torch ignition control.
Oil and gas extraction: shut off due to excessive wellhead pressure, pipeline leakage protection, and compressor anti surge.
Electric energy: boiler MFT, turbine trip, fuel cut-off, generator protection.
High risk pharmaceuticals: reaction process over temperature/over pressure interlock, sterile environment safety monitoring.
5、 Model positioning
T8111C (ICS TRIPLEX): SIL3 TMR safety CPU, ESD/SIS core, high-risk scenario «safety brain».
FC-RUSIO-3224 (Honeywell): SIL3 remote I/O, 32DI+24DO, responsible for on-site signal acquisition/output.
IS220PAOCH1A (GE): Mark VIe analog output, 8-channel AO, turbine/generator valve drive.
PCD235A (ABB): Excitation control module, generator AVR/excitation regulation.