Honeywell DC-TUIO31 51307772-176 Experion Series C Non-Redundant Universal I/O Termination Assembly

Description

The Honeywell DC-TUIO31 51307772-176 is a 9-inch non-redundant Input Output Termination Assembly (IOTA) designed for the Experion Process Knowledge System (PKS) Series C Mark II architecture. Serving as the physical and electrical interface between process field instrumentation and control electronics, the assembly hosts a single Honeywell CC-PUIO31 Universal Input/Output (UIO-2) module. It distributes field wiring across 32 individual software-configurable channels without requiring external signal conditioners or interposing hardware.

Designed for compact DIN rail or carrier mounting in DCS cabinets and Universal Process Cabinets (UPC), the DC-TUIO31 routes power, communications, and signals directly through high-density terminal blocks to the seated I/O module. Conformal coating across the printed wiring board assembly (PWA 51307772-176) protects sensitive traces and components against industrial airborne contaminants and corrosive chemical atmospheres.

Features

• Non-redundant 9-inch Series C form factor tailored for single CC-PUIO31 module hosting.
• Terminates up to 32 universal channels supporting Analog Input (with HART), Analog Output (with HART), Digital Input, and Digital Output configurations.
• Integrated power distribution bus routing 24 VDC excitation power to connected process transmitters and discrete field loops.
• Conformal-coated circuit board protecting against harsh Class G3 environmental contaminants.
• Direct integration with Experion C300 controllers over standard Series C I/O Link backplane infrastructure.

Applications

• DCS field terminations in chemical refining, upstream oil and gas processing, and power generation control enclosures.
• Universal marshalling cabinets where mixed discrete and analog signals require field termination without dedicated single-purpose I/O modules.
• Space-constrained retrofit projects requiring maximum I/O point density on standard 9-inch mounting footprints.

Technical Specifications

Connections / Interfaces

• 32 dedicated multi-tier terminal block positions for signal, common return, and field power wiring.
• Edge-connector interface designed for CC-PUIO31 module insertion and retention.
• Standard Series C 24 VDC bus power connectors and ground grounding lug.

Compliance and Certifications

• ATEX: II 3 G Ex nA nC IIC T4 Gc
• IECEx: Ex nA nC IIC T4 Gc
• North American Hazardous Locations: Class I, Division 2, Groups A, B, C, D, T4
• CSA / FM Approved for hazardous industrial environments
• RoHS compliant