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The ICS Triplex T8110B is a high-integrity safety-certified controller from Rockwell Automation’s legacy ICS Triplex Trusted® platform, designed for mission-critical safety instrumented systems (SIS). This triple modular redundant (TMR) controller delivers fault-tolerant control for processes where failure is not an option, such as emergency shutdown (ESD) in oil refineries or fire-and-gas systems. The ICS Triplex T8110B employs three parallel processing channels that vote on outputs, ensuring continued operation even with a single-channel failure. Its robust architecture includes patented “fault masking” technology to isolate errors without disrupting processes. Engineered for extreme environments, the ICS Triplex T8110B supports hot-swappable modules and seamless integration with legacy Trusted® I/O systems. With TÜV-certified SIL 3 compliance (IEC 61508/61511), this controller provides unparalleled safety assurance for high-risk industries, minimizing spurious trips while maximizing operational availability.
ICS TRIPLEX T8110B
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | T8110B |
| Manufacturer | Rockwell Automation (formerly ICS Triplex) |
| Product Type | TMR Safety Controller |
| Safety Certification | SIL 3 (TÜV Rheinland) |
| Redundancy | Triple Modular Redundant (TMR) |
| Processor Channels | 3x 32-bit RISC processors |
| Voting Mechanism | 2-out-of-3 (2oo3) |
| Communication Ports | 2x RS-232, 1x Ethernet (10/100 Mbps) |
| Supported Protocols | Modbus RTU/TCP, Trusted Network Protocol (TNP) |
| Operating Temperature | -40°C to +70°C |
| Power Supply | 24 VDC (±10%) |
| Power Consumption | 25 W (max) |
| MTBF | >75 years (calculated) |
| Voting Delay | <15> |
| Dimensions | 318 x 45 x 220 mm (HxWxD) |
Main Features and Advantages
Fault tolerance and diagnostics: The ICS Triplex T8110B uses continuous channel-to-channel comparison to detect discrepancies within nanoseconds. Integrated diagnostics cover 99% of potential failures, including processor, memory, and I/O communication faults. Automatic fault isolation prevents error propagation, achieving >99.9999% system availability.
Deterministic performance: Execute safety logic in 1-50 ms scan times with microsecond-level synchronization between channels. This precision is critical for gas compressor surge control or turbine overspeed protection. The controller’s patented “Voter Cross-Check” technology ensures output accuracy even during transient faults.
Legacy integration and cybersecurity: Compatible with existing Trusted® TMR I/O modules (e.g., T8431, T8461) and supports migration from older T8100 controllers. Physical write-protection switches and encrypted firmware updates defend against unauthorized modifications.
Engineering efficiency: Program using IEC 61131-3 languages in Rockwell’s Trusted Tool Manager software. Online module replacement and automatic configuration restoration reduce downtime during maintenance.
Application Field
The ICS Triplex T8110B dominates ultra-hazardous environments requiring zero-fail tolerance. In oil & gas, it governs offshore platform ESD systems, pipeline leak detection, and flare control, where SIL 3 compliance is mandatory. Power plants deploy it for burner management (BMS) and turbine protection, leveraging its immunity to EMI from high-voltage equipment.
Chemical processors rely on the ICS Triplex T8110B for reactor pressure relief and toxic gas monitoring, utilizing its -40°C cold-start capability in outdoor installations. For liquefied natural gas (LNG) terminals, the controller manages cryogenic valve safety sequences. In mining, it operates hoist brake controls and ventilation fail-safes. Pharmaceutical batch processes use it for fire suppression system activation in cleanrooms.
Related Products
T8100C: Next-gen TMR controller with enhanced cybersecurity.
T8431C: Analog input module (16-channel) for SIL 3 loops.
T8461: Digital output module with fused outputs.
T8800: Communications gateway for OPC DA/UA.
Trusted TMR I/O Baseplate: Backplane for module expansion.
T8310: Power supply module (redundant).
Trusted Tool Manager V4.1: Configuration software suite.
ICS TRIPLEX T8110B
Installation and Maintenance
Pre-installation preparation: Verify DIN-rail clearance (min. 100 mm above/below) and ambient humidity (<95>ICS Triplex T8110B chassis directly to plant earth bus (<5>
Maintenance recommendations: Perform channel integrity tests quarterly using simulated fault injection. Replace cooling fans every 5 years in dusty environments. Monitor “Fault” LEDs on processor modules; amber indicators require immediate investigation. Always maintain spare voter modules on-site for the ICS Triplex T8110B. Never hot-swap processor modules without disabling outputs.
