Description
| Model Number | T9110 |
| Manufacturer | ICS Triplex / GE Automation & Controls |
| System Platform | Triconex® Safety Instrumented System (SIS) |
| Module Type | Main Processor (Central Processing Unit) |
| Architecture | Triple-Modular Redundant (TMR) – 3 independent CPUs |
| Processor | High-performance industrial-grade CPU (proprietary design) |
| Memory | 8 MB Flash (program + configuration), 16 MB RAM (runtime) |
| Cycle Time | As fast as 50 ms (typical), programmable |
| Programming Language | IEC 61131-3: Ladder Diagram (LD), Function Block Diagram (FBD), Statement List (ST) |
| Supported Software | Tristation 1131 (Version 3.x and earlier) |
| Communication Ports | |
| – Front Port | RS-232 (for local programming/service) |
| – Backplane | High-speed TMR bus for I/O and inter-processor sync |
| Redundancy | Full TMR: three identical CPUs execute logic in parallel with real-time voting |
| Hot-Swap Support | Yes – individual CPUs can be replaced online |
| Diagnostics | Continuous self-diagnostics, fault detection, and error logging |
| LED Indicators | ACTIVE, READY, 2x COM (TMR comms), FAULT, MAINT |
| Compatibility | Works with T8000, T8400, T8451, T1025, T8800, etc. |
| Chassis Compatibility | Tricon Models 8008, 8009, 8010 (older generation) |
| Safety Certification | TÜV-certified for SIL 3 per IEC 61508 |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Installation | Occupies CPU slots (Slots 1–3) in compatible Tricon chassis |
📦 Product Introduction
The ICS Triplex T9110 is a Triple-Modular Redundant (TMR) main processor module designed for the Triconex safety instrumented system (SIS). It serves as the central brain of the safety controller, executing safety logic, processing I/O data, and ensuring fault-tolerant operation in mission-critical industrial environments.
As part of the older generation Triconex platform, the T9110 was widely deployed in the 1990s and early 2000s in industries such as oil & gas, chemical processing, power generation, and refining. It runs safety programs developed in Tristation 1131 (Version 3.x or earlier) and supports Ladder Logic, Function Block Diagrams, and Statement List programming.
Each T9110 system uses three identical processors operating in parallel. Inputs are voted across all three CPUs, logic is executed simultaneously, and outputs are synchronized with real-time comparison. This TMR architecture ensures that the system continues to operate safely even if one CPU fails — a key requirement for SIL 3 applications.
⚠️ Note: The T9110 is legacy/obsolete and has been superseded by newer models such as T8110B, T8300, and T8311. However, many T9110 systems remain in service due to their proven reliability.
ICS TRIPLEX T9110
✅ Core Advantages & Technical Highlights
1. Triple-Modular Redundancy (TMR)
- Three independent CPUs execute the same logic in lockstep.
- Real-time votingon inputs, logic execution, and outputs.
- Automatic fault detection and masking— no single CPU failure affects safety.
2. High Reliability & Proven Field Performance
- Thousands of T9110 systems have operated for decades without failure.
- Designed for 24/7 continuous operationin harsh industrial environments.
- MTBF (Mean Time Between Failures) exceeds 100,000 hours.
3. Hot-Swap & Online Maintenance
- Any one of the three CPUs can be replaced while the system is running.
- Critical for maintaining process uptimeduring maintenance or upgrades.
4. Comprehensive Diagnostics
- Continuous self-tests on CPU, memory, and communication paths.
- Faults are logged and indicated via LEDsand Tristation 1131.
- Supports event recordingand root cause analysis.
5. Secure Local Programming Port
- Front-panel RS-232 portallows local connection for:
- Program download
- Diagnostics
- Troubleshooting
- Password-protected access ensures security.
🏭 Typical Application Scenarios
| Industry | Application | Role of T9110 |
| Oil & Gas Platforms | Emergency Shutdown (ESD) | Executes shutdown logic upon detection of hazardous conditions |
| Refineries | Fire & Gas (F&G) System | Processes detector signals and triggers alarms/suppression |
| Chemical Plants | Reactor Interlock System | Monitors temperature, pressure, level and enforces safe states |
| Power Plants | Boiler Protection | Implements burner management logic for safe startup/shutdown |
| Petrochemical Facilities | Process Isolation | Controls valve sequences during emergency isolation |
🔗 Related Model Recommendations
| Model | Type | Relationship to T9110 |
| T8110B / T8311 | Modern CPU | Successors to T9110 with faster processing and more memory |
| T8800 | Power Supply | Powers T9110 chassis (Models 8008/8009/8010) |
| T8451 / T1025 | I/O Modules | Connected via backplane; data processed by T9110 |
| T8403 / T8151B | Ethernet Module | Enables remote monitoring of T9110-based systems |
| 8008 / 8009 / 8010 | Chassis | Physical housing for T9110 CPUs |
| Tristation 1131 v3.x | Engineering Software | Required to program and maintain T9110 systems |
| T9401B | Discrete Input Module | Common I/O paired with T9110 in legacy systems |
ICS TRIPLEX T9110
⚙️ Installation, Commissioning & Maintenance
Installation
- Install three T9110 modulesin Slots 1, 2, and 3 of compatible chassis (8008/8009/8010).
- Ensure proper grounding and ESD protection.
- Connect AC power via T8000 or similar power supply.
Commissioning
- Connect Tristation 1131 via RS-232 or network (with communication module).
- Download safety logic program and configuration.
- Perform I/O loop checksand TMR synchronization test.
- Validate hot-swap functionby removing one CPU — system should remain operational.
- Monitor LED status: ACTIVE (flashing), READY (solid), no FAULT.
Maintenance
- Regularly inspect LED indicatorsfor abnormal patterns.
- Backup configuration and logic monthly.
- Monitor event logsfor CPU faults or communication errors.
- Replace failed CPUs using hot-swap
- Keep spare T9110 modules and Tristation 1131 v3.x software on-site.
