TRICONEX 8112 High-Density Remote Expansion Chassis for Tricon SIL 3 Safety Instrumented Systems

Product Description

The TRICONEX 8112 is a high-density Remote Expansion Chassis (RXM Chassis) engineered by TRICONEX (Schneider Electric, former Invensys) for Tricon/Tricon CX SIL 3 safety instrumented systems (SIS) in critical industrial environments. As a core remote I/O expansion component, this rack-mount chassis is designed to extend the I/O capacity of the main Tricon chassis to remote locations via triplicated RS-485 I/O expansion bus or fiber-optic links (with RXM modules). It supports high-density hot-swappable TMR I/O modules (analog/digital/pulse), redundant power supplies, and seamless integration with Tricon main chassis—making it ideal for distributed emergency shutdown (ESD), fire & gas (F&G), process safety, and turbine/compressor control systems in oil & gas, chemical, petrochemical, and power generation industries where remote I/O placement is required.

Key Functions

The 8112 remote expansion chassis delivers fault-tolerant, distributed I/O expansion for safety-critical applications. Key functions include: High-density configuration supporting up to 16 hot-swappable TMR I/O modules (3 modules per TMR set) with channel-level diagnostics; triplicated RS-485 I/O expansion bus (two redundant paths, 375 kbps data rate) for communication with main chassis; fiber-optic RXM module compatibility for long-distance remote I/O (up to multi-kilometer range) with electrical isolation; redundant power module slots (hot-swappable) for 24 VDC or 120/230 VAC input; backplane with TMR voting and fault isolation; LED status indicators for chassis health, power, bus communication, and module diagnostics; and compliance with IEC 61508 SIL 3, FM, CSA, ATEX, IECEx standards—ensuring reliable operation in harsh industrial environments.

Application Scenarios

The TRICONEX 8112 remote expansion chassis is deployed in safety-critical industrial applications requiring distributed high-density I/O expansion with SIL 3 compliance. In offshore oil & gas platforms, it houses remote I/O modules for wellhead ESD valves, subsea sensor arrays, and fire protection systems—connected to the main Tricon chassis via fiber optics to avoid electrical noise and long cable runs. For chemical and petrochemical plants, it extends I/O capacity to remote process units, storage tanks, and toxic gas detection zones—supporting coordinated safety shutdowns and reducing installation costs. In power generation facilities, it is used for turbine hall, boiler house, and switchyard remote I/O, enabling real-time monitoring and control of critical safety equipment. The chassis is also suitable for mining, pharmaceutical, and water/wastewater treatment—all scenarios where distributed, fault-tolerant I/O expansion is mandatory.

Technical Specifications

• Global Inventory Network: 121 shared inventories worldwide, enabling direct procurement from overseas warehouses—supporting faster delivery and reduced logistics costs.
• Pricing & After-sales: Competitive prices paired with reliable after-sales warranty services.
• Customer Coverage: Serving clients across regions including the United States, Germany, Japan, South Korea, United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, Netherlands, Switzerland, Sweden, Belgium, Austria, and Turkey.
• Product Quality Assurance: All products are brand new and original. Spare parts include a 1-year warranty, and all items undergo pre-delivery testing and certification.
• Discount Policy:
• Multi-product orders qualify for custom discounts (contact us for details).
• We offer further price adjustments if you receive a lower quote for identical products from other suppliers, tailored to your budget.