Description
The TriconeX 8120E is an Enhanced Performance Main Chassis/Frame Module produced by Triconex(now part of Schneider Electric).As the core backbone of Triconex’s industry-leading Tricon Safety Instrumented System(SIS),the TriconeX 8120E is specifically designed to carry and connect redundant main processor modules(such as the Tricon 3008/3009 series MP)and various input/output(I/O)modules.It ensures that Tricon SIS can achieve triple module redundancy(TMR)architecture by providing a robust,reliable,and highly redundant platform,providing excellent safety,availability,and continuous operation capabilities for the world’s most critical industrial processes.
The TRICONEX 8120E is a key component of the Tricon V9.6 and higher systems,which houses three independently running main processor modules that vote through a proprietary TriBus system to eliminate single points of failure.By inserting the I/O module and communication module into this main chassis,the TRICONEX 8120E can achieve end-to-end security chain from field devices to control logic.Its design strictly complies with international safety standards such as IEC 61508,and can reach up to SIL3 safety integrity level.It plays a crucial role in preventing hazardous situations,protecting personnel,assets,and the environment.

8120E TRICONEX
technical specifications
Product model:8120E
Manufacturer:TRICONEX(Schneider Electric)
Product type:Main Chassis/Frame Module
Compatible system:Tricon SIS(Tricon v9.6 and higher versions)
Can accommodate modules:up to 3 main processor modules(MP)and I/O modules can be accommodated
Redundancy support:Supports Triple Modular Redundancy(TMR)architecture
I/O bus:Triple redundant RS-485 bidirectional communication bus
Installation method:19 inch standard rack installation
Working temperature:-25°C to+70°C
Storage temperature:-40°C to+85°C
Certification standards:IEC 61508(SIL3),UL,c-UL,CE,FM,TÜV,etc.(depending on the overall system certification)
Features:Hot swappable support,online diagnosis,adaptive repair
Main features and advantages
As the core of the Tricon safety instrumented system,the TRICONEX 8120E has unparalleled advantages in the field of industrial process safety due to its unique design and powerful features.
Triple Modular Redundancy(TMR)architecture support:The TriconeX 8120E is the physical foundation for implementing TMR architecture in the Tricon system.It can accommodate three independently running main processor modules and make”voting”decisions on all inputs and outputs through hardware and software mechanisms.Even if the system experiences up to two component failures,it can ensure the continuous and error free operation of the controller,thereby achieving the highest level of fault tolerance and system availability in the industry.
Extremely high system integrity and safety:The design of the main chassis complies with the IEC 61508 safety standard and is typically used to construct systems that achieve SIL3 safety integrity level.This means that the TRICONEX 8120E can effectively prevent dangerous situations,minimize risks,and protect the safety of personnel,production,and assets.
Modular and hot swappable design:The TRICONEX 8120E adopts a modular design,supporting flexible configuration of various I/O modules and communication modules.More importantly,it supports online hot swappable functionality,allowing for module replacement and maintenance without interrupting system operation.This greatly reduces downtime,improves equipment utilization and maintenance efficiency.
Excellent environmental adaptability:The TRICONEX 8120E and its supported Tricon system are designed to withstand harsh industrial environments,including high temperatures,vibrations,and electromagnetic interference.Its sturdy structure and reliable electrical connections ensure long-term stable operation under harsh working conditions,extending the service life of the system.
Simplified system management and diagnostics:As part of Tricon SIS,the TriconeX 8120E,in conjunction with Triconex’s software tools such as TriStation 1131,enables centralized configuration,programming,and diagnostics of the entire system.The intelligent microprocessor on the I/O module reduces the burden on the main processor and provides comprehensive online diagnostic capabilities,which can quickly identify and locate faults,simplifying the troubleshooting and maintenance process.

8120E TRICONEX
application area
The TRICONEX 8120E main chassis module,as the core of the Tricon safety instrumented system,is widely used in various industrial fields with the highest requirements for safety and high availability,especially in continuous production and high-risk processes.
In the oil and gas industry,including upstream drilling platforms,midstream pipeline transportation,and downstream refineries and petrochemical plants,the TRICONEX 8120E is widely used in emergency shutdown systems(ESD),fire and gas systems(F&G),high integrity pressure protection systems(HIPPS),and burner management systems(BMS).It ensures that in the event of a dangerous situation,the process can be quickly and safely placed in a safe state,preventing accidents from escalating.
In the field of power production,whether it is gas turbines,steam turbines,or nuclear power plants,the TRICONEX 8120E is used for key applications such as turbine machinery control,boiler safety interlocking,and furnace safety management.It ensures the reliable start-up,smooth operation,and emergency safe shutdown of the generator set,thereby ensuring the continuity of power supply and the safety of operators.
In addition,TRICONEX 8120E is also used in various safety critical control systems in industries such as chemical,pharmaceutical,mining,and metallurgy,such as reactor safety protection,hazardous chemical storage management,and important equipment interlock protection.Its excellent fault tolerance and security certification make it the preferred solution for protecting personnel,environment,and expensive assets,effectively reducing operational risks and unplanned downtime.
Related products
The main chassis module of the Triconex 8120E is a core component of the Tricon safety instrumented system ecosystem,which works in conjunction with a range of other Triconex modules and software.
TRICONEX 3008/3009:The enhanced main processor module of the Tricon system typically requires three TRICONEX 3008 or TRICONEX 3009 modules to be inserted into the TRICONEX 8120E chassis to achieve TMR architecture.
TRICONEX 8110:The standard main chassis of the Tricon system functions similarly to the 8120E,but is typically suitable for lower performance or earlier versions of the system.
TRICONEX 8101/8102/8103:Various I/O module chassis used to expand I/O capabilities,connected to TRICONEX 8120E through an I/O expansion bus.
TRICONEX 3501E/3502E:Enhanced digital input module for receiving discrete signals on site.
TRICONEX 3601E/3603E:Enhanced digital output module for controlling field actuators.
TRICONEX 3700A/3703E:Analog input module used to receive analog process variables.
TRICONEX 3805E/3806E:Analog output module used to control analog actuators.
TRICONEX 4351B/4352B:Communication Module(TCM),used for data exchange with other systems such as DCS,PLC,or SCADA.
Triconex TriStation 1131 Developer’s Workbench:an engineering software used for configuring,programming,debugging,and maintaining the Triconex 8120E and the entire Tricon SIS system.
Triconex Safety Validator:A TÜV certified automated logic testing tool used to validate the application logic of Tricon controllers running in the Triconex 8120E.
Installation and maintenance
Preparation before installation:Before installing the TRICONEX 8120E main chassis module,it is essential to ensure that all power circuits have been completely disconnected and all necessary safety precautions have been taken,such as tagging and locking,to prevent accidental power on.Please carefully read the system planning and installation guide provided by Triconex,as well as the detailed technical manual of Triconex 8120E,to understand the correct installation process,rack installation specifications,grounding requirements,and environmental conditions.Install the TRICONEX 8120E chassis onto a standard 19 inch rack,ensuring that the chassis is securely fixed and leaving sufficient heat dissipation space.The chassis usually needs to be connected to the common grounding bus of the rack through grounding screws to ensure system electromagnetic compatibility and operational safety.Gently insert the main processor module and I/O module into the corresponding slots of the TRICONEX 8120E chassis according to their respective slot keying mechanisms,ensuring that the module is fully aligned and securely fastened to the chassis backplane connector.After the installation of all modules is completed,carefully check all connections to ensure that there are no loose or incorrect wiring,especially power and ground connections.
Maintenance suggestion:As a key component of the safety system,the TRICONEX 8120E is designed for high reliability and low maintenance,but regular inspections and preventive maintenance are crucial to ensure its long-term stable operation.Regularly conduct visual inspections of the TRICONEX 8120E chassis and its installed modules to ensure no physical damage,signs of corrosion,loose connectors,or dust accumulation.Keep the interior and exterior of the chassis clean,ensure that the cooling fan(if applicable)is running properly,and that the ventilation openings are not blocked to maintain a good heat dissipation environment.Regularly check the system diagnostic logs and status information of the Triconex 8120E and its modules using diagnostic software tools such as TriStation.The Triconex system has a powerful built-in self diagnostic function,and any abnormal or faulty indication should be immediately investigated and handled.Thanks to its hot swappable capability,if a module reports a fault,it can be replaced online without interrupting the process,greatly simplifying the maintenance process and improving system availability.Follow the manufacturer’s recommended maintenance cycle and procedures,including regular functional testing and validation of the entire safety system,to ensure that the TRICONEX 8120E and its carried Tricon SIS always meet safety performance requirements.

8120E TRICONEX
Product Guarantee
TRICONEX(a brand under Schneider Electric)provides the highest standard of product assurance for its 8120E main chassis module,reflecting the company’s excellent reputation in industrial process safety and firm commitment to customers.



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