TRICONEX

1.Term Explanation

1. Triconex: Brand name (Kangjisen), a Tricon Triple Modular Redundant (TMR) SIS Safety Instrumented System brand under Schneider Electric, applied to ESD, F&G, BMS furnace safety interlock for high-risk industries including chemical, oil & gas and power plants.
2. EMP II: Abbreviation of Enhanced Multi-Processor Generation 2, the second-generation enhanced main CPU series of Tricon, upgraded successor model of MP3005.
3. MP3006: Complete hardware model of main processor card with fully upgraded hardware architecture, memory capacity and computing performance compared with MP3005.
4. Main Processor Module: The core unit responsible for calculation, scheduling and management of the whole SIS safety system.
5. Enhanced 2MB SRAM: Upgraded configuration with 2MB high-speed static RAM; SRAM is high-speed non-volatile cache memory for real-time process data, interlock logic and millisecond SOE event storage.

Supplementary Core Architecture Note:

Adopts TMR triple redundant 2-out-of-3 fault-tolerant architecture. Three MP3006 processors must be installed synchronously in one rack. Three CPUs execute independent synchronous calculations and compare results via hardware in real time. Failure of one single CPU, memory or bus will not trigger spurious trip or fail-to-trip, fully certified SIL3.

The 2MB large-capacity SRAM is the key upgrade: double memory capacity versus MP3005, supporting more IO points, longer SOE event storage cycles, complex interlock logic and concurrent communication cache, ideal for large integrated chemical plants.

Equipped with built-in TriBus triple private synchronous bus controller to coordinate local IO, SRXM fiber remote IO extenders and CIM/TCM communication modules, with independent hardware fault diagnosis, clock synchronization and program verification unit.

Compatible with Tricon V10 systems and backward compatible with V9.6 platform, supporting online hot-swap and bumpless redundant switchover.

2. Core Main Purposes

1. Execute full-plant safety interlock logic calculation (core function) Run safety logic programs downloaded via TriStation software, including ESD emergency shutdown, F&G fire & gas monitoring, HIPPS high-integrity pipeline protection, boiler BMS furnace safety and TS3000 large compressor unit protection. Three processors run parallel independent calculations, and hardware 2oo3 voting outputs final interlock commands to drive SDO, AO output modules for cut-off and unit shutdown actions.
2. 2MB SRAM high-speed cache for real-time data and SOE events Large-capacity SRAM caches real-time analog AI, digital DI process values, interlock status and alarm messages; millisecond-level SOE sequence events are stored persistently for a short period after power loss, supporting safety accident traceability and compliance audit. The expanded memory supports thousands of plant points and hours of continuous event recording without overflow.
3. Unified scheduling & management of all rack IO, communication and remote extension modules

• Periodically collect data and diagnose faults of local DI/AI/SDO/AO I/O cards;
• Manage remote explosion-proof IO cabinets hundreds of meters away through SRXM4210 fiber optic extenders;
• Coordinate TCM/WOPC, CIM Ethernet communication modules to handle bidirectional data exchange with DCS, HMI, MES and third-party PLCs uniformly;
• Diagnose faults such as wire breakage, short circuit, offline modules and communication attenuation for all cards, and generate unified alarms.

4. Triple redundant data synchronization, hardware voting and fault tolerance Three MP3006 units synchronize operation data, programs and clocks via high-speed TriBus bus in real time. Calculation results from three channels are compared every scan cycle. If memory or computing unit of one processor is damaged, the other two will output correct interlock commands continuously, eliminating all single-point failure risks.
5. System clock synchronization to guarantee uniform SOE timing accuracy Built-in high-precision hardware clock; clocks of three processors are synchronized within milliseconds. All channels of local and fiber remote IO share unified time sequence, ensuring no timestamp offset for plant-wide interlock and alarm events, complying with safety audit codes of petrochemical and safety supervision authorities.
6. Safety program storage, verification, online download and modification Onboard flash memory solidifies safety logic, automatically verifying program integrity upon power-on to prevent tampering or corruption. Supports bumpless online full download and partial logic modification via TriStation without plant shutdown, convenient for technical renovation and debugging during continuous production.
7. Redundant hot-swap maintenance to sustain continuous safe production A single faulty MP3006 can be hot-swapped online directly. The remaining two processors maintain full interlock calculation, eliminating huge economic losses caused by full plant shutdown of refineries, LNG plants and power stations.
8. Communication load balancing to improve upper system interaction performance 2MB large memory caches concurrent data of multiple protocols including OPC and Modbus TCP, reducing cache pressure of communication cards. No data lag occurs when multiple HMI and servers access the system simultaneously without consuming logic computing resources.

3. Applicable Application Scenarios

Scenario 1: Large integrated petrochemical plants (Core Application)

10-million-ton oil refineries, ethylene, PX, hydrogenation and catalytic reforming ESD emergency shutdown systems. Featuring tens of thousands of IO points and complex interlock logic, MP3006 with 2MB SRAM supports massive process points and stably manages full safety interlocks of furnaces, reactors and pipe racks.

Scenario 2: Offshore oil platforms, LNG liquefaction plants & long-distance oil/gas pipelines

F&G safety systems for offshore platforms, LNG tank yard safety systems, HIPPS overpressure protection systems of pipeline compressor stations. Matched with SRXM4210 fiber remote IO to remotely control wellheads, valve chambers and flare shutoff valves. Large memory stores massive leakage and pressure alarm events.

Scenario 3: High-temperature & high-pressure sections of coal chemical, ammonia and methanol plants

High-risk units including gasifiers, shift converters and synthesis towers with complex interlock logic and scattered IO points. Triple redundant MP3006 guarantees reliable cut-off logic for oxygen and gasification agents, meeting strict SIL3 safety codes for chemical industries.

Scenario 4: BMS furnace safety systems of thermal power, waste incineration & gas power plants

Interlock control for boiler purge, ignition and fuel cut-off. Power plants generate massive equipment points and alarm records; 2MB SRAM supports long-term SOE storage, complying with power industry safety supervision requirements.

Scenario 5: Explosion-proof multi-reactor workshops of fine chemical & pharmaceutical industries

Multiple sets of distributed explosion-proof reactors share one Tricon safety system with dense remote fiber IO points. MP3006 large memory monitors temperature, pressure and relief interlocks of all reactor groups simultaneously.

Scenario 6: TS3000 protection systems for large compressors & air separation units

Anti-surge and ESD shutdown protection for large centrifugal compressors and air separation equipment in chemical plants. Heavy logic calculation and frequent real-time data interaction are handled smoothly by high-performance MP3006 without scan delay.

Scenario 7: Overseas complete oil & gas, chemical and power plant export projects

Certified TÜV SIL3 for international applications. Large memory fits large overseas integrated plants; standardized model with globally available spare parts complies with safety and explosion-proof codes of all countries.

4. Supplementary Key Hardware & Safety Features

1. Safety Certifications: TÜV Rheinland IEC61508 SIL3, IEC61511 process safety standard, UL & CE industrial certifications;
2. Core Storage: 2MB high-speed SRAM for real-time cache, independent program Flash for solidified safety logic;
3. Redundancy Architecture: TMR 2-out-of-3 fault tolerance, three units operated synchronously per rack;
4. Bus Interface: TriBus triple redundant synchronous bus, compatible with SRXM fiber remote extenders;
5. Computing Upgrade: Double memory capacity vs MP3005, supporting more IO points, extended SOE logging and multi-client concurrent communication;
6. Timing Performance: High-precision synchronized clock, zero millisecond offset for SOE timestamps;
7. Maintenance Function: Support online hot-swap and online logic download/modification without plant shutdown;
8. System Compatibility: Full compatibility with Tricon V9.6 / V10 safety systems, matched with complete series of IO and communication cards including SDO, AI, DI, TCM and SRXM.

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