8120E Triconex | Enhanced Low-Density Expansion Chassis

Description

The 8120E is an enhanced 10-slot expansion chassis (frame) designed for the Triconex™ Triple Modular Redundant (TMR) safety system. This “E” version represents the modern, high-reliability mechanical frame used to house I/O modules, providing the physical backplane and power distribution necessary for critical safety instrumented functions.

Technical Parameters

• Manufacturer: Triconex (Schneider Electric)

• Model Designation: 8120E

• Slot Capacity: 10 Logical Slots (Low-Density)

• Architecture: TMR (Triple Modular Redundant) Backplane

• Input Power: Dual Redundant 24V DC / 115V AC (Power Supply dependent)

• Communication: I/O Bus Extension for Main Chassis link

Specifications

• Mounting: 19-inch rack-mount or panel-mount configuration

• Construction: Ruggedized industrial-grade steel frame

• I/O Connectivity: Supports both Digital and Analog TMR modules

• Diagnostics: Integral health monitoring for power and communication rails

• Protection Class: G3 conformal coating for harsh/corrosive environments

Application Areas

• Emergency Shutdown Systems (ESD)

• Fire and Gas (F&G) detection and mitigation

• Burner Management Systems (BMS) in power plants

• Critical process control in Oil & Gas refineries

• High-integrity pressure protection systems (HIPPS)

Q&A Section

• Q: What is the difference between the 8110 and the 8120E?

  • A: The 8110 is typically the main processor chassis, while the 8120E is an expansion chassis used to add more I/O modules to the system.

• Q: Does the 8120E require its own power supplies?

  • A: Yes, it requires two redundant power supply modules (typically 8310, 8311, or 8312) to provide power to the hosted I/O cards.

• : Can this frame be used with Tricon CX modules?

  • A: No, the 8120E is part of the “Classic” Tricon (v9/v10/v11) hardware line and is not physically compatible with the smaller CX form factor.

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