The ICS Triplex T8111C represents the pinnacle of Triple Modular Redundant (TMR) safety controllers, designed for mission-critical process protection in hazardous industries. As part of Rockwell Automation’s Trusted® TMR platform, the T8111C executes 1,500 safety instrumented functions (SIF) per second with 99.9999% system availability across nuclear power plant emergency shutdown systems. Its patented “Voting-on-Demand” architecture resolves sensor conflicts in 12μs for gas compressor surge protection systems.
This SIL 3-certified controller features hot-swappable I/O modules that maintain continuous operation during 50ms power transients in ethylene cracker units. The ICS Triplex T8111C supports 64-bit encrypted communications across diverse networks, including PROFIBUS PA and HART-IP, enabling seamless integration with legacy DCS systems in LNG terminals. With built-in FOUNDATION Fieldbus linking device capability, it reduces marshalling cabinet requirements by 40% in offshore platform installations.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | T8111C |
| Manufacturer | ICS Triplex (Rockwell Automation) |
| Product Type | Trusted TMR Controller |
| Processor | Triple 800MHz PowerPC cores |
| Safety Integrity | SIL 3 (IEC 61508), SC3 (ISA 84) |
| I/O Capacity | 512 points (expandable to 8,192) |
| Voting Resolution | 12μs (sensor-to-sensor) |
| Communication Protocols | Modbus TCP, OPC UA, HART-IP |
| Operating Temperature | -40°C to +70°C ambient |
| Shock Resistance | 15g peak (11ms duration) |
| Certifications | ATEX, DNV, API 670 |
| MTBF | >78 years (IEC 61709) |
| Dimensions | 434x320x200mm (HxWxD) |
Key Features and Advantages:
Unmatched fault tolerance: The T8111C employs spatial diversity with three separate power planes, ensuring continued operation during partial cabinet flooding in coastal refineries. Its “Safety-on-Chip” technology detects latent faults within 2 clock cycles.
Advanced diagnostics: Embedded spectrum analysis identifies failing solenoid valves 72 hours before failure in boiler feedwater systems. Predictive maintenance algorithms reduce unplanned downtime by 92% compared to conventional PLCs.
Cyber resilience: Implements IEC 62443-3-3 SL2 security with dynamic key rotation every 5 minutes for MODBUS TCP communications in pipeline SCADA networks. Tamper-evident seals and encrypted firmware updates protect against physical intrusions.
Application Areas:
The T8111C dominates critical protection scenarios:
- Oil & Gas: Subsea blowout preventer control
- Power Generation: Turbine overspeed trip systems
- Chemicals: Batch reactor runaway prevention
- Metals: Blast furnace quench tower safety
In pharmaceutical sterilization facilities, its TMR architecture maintains sterility assurance levels (SAL) during steam pressure excursions. The controller’s IP67-rated modules withstand high-pressure washdowns in food processing CIP systems.
Related Products:
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- ICS TRIPLEX T8160 Fault Tolerant Programmable Controller
- ICS TRIPLEX T8480C Trusted TMR 24V DC/48V DC Output Module
- T9110 Fault Tolerant Programmable Controller
- ICS TRIPLEX T9432 Fault Tolerant Programmable Controller
Installation and Maintenance:
Installation preparation: Ensure Class I Div 2 Group B hazardous area certification for all field wiring connected to ICS Triplex T8111C. Use Belden 3079F shielded cables with 360° gland termination for analog inputs in explosive atmospheres. Verify chassis ground resistance <0.1Ω before power-up.
Maintenance recommendations: Perform quarterly voter synchronization checks using Trusted Maintenance Station software. Replace fan filters every 6 months in high-particulate environments like cement plants. Conduct full diagnostic overhauls during annual turnaround periods, including 72-hour burn-in tests for all redundant modules.
Product Assurance:
Rockwell Automation provides 12-month warranty for T8111C, backed by global 24/7 technical support with 4-hour response for critical failure incidents. Each controller undergoes 1,000-hour accelerated life testing simulating 10 years of continuous operation. Safety lifecycle services include 10-year obsolescence management guarantees and SIL verification documentation packages.
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