Description

The HONEYWELL DC-TUIO31 is a versatile,high-reliability universal discrete I/O module engineered for Honeywell’s Experion®Process Knowledge System(PKS),including integration with the Safety Manager platform.Designed for mission-critical applications in oil&gas,refining,power,and chemical processing,this module supports up to 16 channels that can be individually configured—via software—as digital inputs(DI)or digital outputs(DO),eliminating the need for separate hardware types.With robust electrical isolation,wide voltage tolerance,and full compliance with IEC 61508(up to SIL2),the HONEYWELL DC-TUIO31 delivers operational flexibility,safety integrity,and reduced lifecycle costs in demanding industrial environments.

Application Scenarios

At a North Sea offshore platform,space constraints and frequent equipment changes made maintaining fixed I/O configurations impractical.Legacy systems required hardware swaps whenever a valve feedback signal was repurposed as a pump start command—causing days of downtime.After deploying the HONEYWELL DC-TUIO31,engineers reconfigured channels remotely via Experion Studio:one week a channel monitored a fire damper status(DI),the next it triggered an emergency vent solenoid(DO).During a major storm-induced shutdown,the module’s 125 VDC compatibility ensured reliable operation despite voltage sags from generator instability.Over two years,the platform reduced I/O-related work orders by 60%and cut spare parts inventory by consolidating five legacy card types into a single HONEYWELL DC-TUIO31 standard.This adaptability transformed I/O from a rigid constraint into a dynamic asset.

Parameter

Main Parameters Value/Description

Product Model HONEYWELL DC-TUIO31

Manufacturer Honeywell Process Solutions

Product Category Universal Discrete I/O Module for Experion PKS

Channels 16 independently configurable channels(DI or DO per channel)

Input Voltage Range 24–125 VDC or 24–120 VAC(sinking or sourcing)

Output Type Relay or solid-state(depending on terminal base);max 2 A per channel

Configuration Software-defined via Experion Studio—no jumpers or DIP switches

Redundancy Support Yes—supports redundant FTE(Fault Tolerant Ethernet)and controller pairing

Diagnostic Features Per-channel LED indicators,open-wire detection,short-circuit protection

Isolation 2500 Vrms channel-to-backplane;channel-to-channel optional

Operating Temperature-20°C to+70°C(extended range available)

Certifications CE,UL,CSA,ATEX,IEC 61508(SIL2),IEC 61010-1

Mounting Plugs into Honeywell I/O chassis(e.g.,XC-IO or Safety Manager I/O base)

Communication Via C300 controller over FTE network

Technical Principles and Innovative Values

Innovation Point 1:True Per-Channel Universality

Unlike“universal”I/O cards that group channels into fixed banks,the HONEYWELL DC-TUIO31 allows each of its 16 channels to be set independently as DI or DO—maximizing hardware utilization in mixed-signal panels.

Innovation Point 2:Wide-Voltage Field Compatibility

The module natively supports both 24 VDC(standard automation)and 125 VDC(common in power/utility trip circuits)—eliminating external relays or isolators in hybrid plants.

Innovation Point 3:Integrated Safety&Basic Process I/O

When used with Honeywell Safety Manager,the HONEYWELL DC-TUIO31 can participate in SIL2 safety instrumented functions(SIFs),while simultaneously handling non-safety logic—reducing system complexity.

Innovation Point 4:Predictive Diagnostics via Asset Model

Channel health data(e.g.,contact wear estimation,load current trends)is automatically published to the Experion Asset Model,enabling condition-based maintenance without custom scripting.

Application Cases and Industry Value

In a U.S.Gulf Coast ethylene cracker,a furnace shutdown sequence required coordination between 42 discrete signals—some safety-critical(SIL2),others for sequencing.Previously,this demanded separate safety and BPCS I/O racks.By deploying HONEYWELL DC-TUIO31 modules across both domains,the plant unified its architecture.During a proof test,engineers discovered a failing output driver via the module’s diagnostic log before it caused a spurious trip.The result:30%less panel space,25%lower wiring costs,and a single point of configuration for all discrete logic.Reliability engineers now use the DC-TUIO31’s historical fault data to predict terminal block degradation—turning passive I/O into an active reliability tool.

Related Product Combination Solutions

Honeywell C300 Controller:Primary host for DC-TUIO31 in Experion PKS systems.

Honeywell Safety Manager:Enables SIL2 applications using DC-TUIO31 in safety loops.

Honeywell XC-IO Chassis:Standard I/O carrier for DC-TUIO31 modules.

Honeywell DC-TBIO31:Terminal base with screw terminals—required for field wiring to DC-TUIO31.

Honeywell CC-TDIN31:Dedicated digital input alternative—but lacks universal flexibility of DC-TUIO31.

ABB AC 800M PM864:Can interface via OPC if integrating legacy ABB logic with Honeywell I/O.

Rockwell GuardLogix:Competing safety PLC—but DC-TUIO31 offers deeper integration within native Honeywell ecosystems.

Phoenix Contact AXC F 2152:Third-party I/O—but DC-TUIO31 provides certified SIL support and Experion-native diagnostics.

Installation,Maintenance,and Full-Cycle Support

Installation of the HONEYWELL DC-TUIO31 involves inserting the module into a compatible I/O chassis(e.g.,XC-IO)and attaching the DC-TBIO31 terminal base.Field wiring uses standard shielded cable,with polarity-insensitive connections for AC/DC inputs.Configuration is performed entirely in Experion Studio:select DI or DO per channel,set alarm thresholds,and assign to control strategies—no physical changes needed.

The module features hot-swap capability in redundant systems and self-diagnostics visible via front-panel LEDs and Experion HMI.In case of failure,replacement takes under 5 minutes,with automatic parameter restoration from the controller.Our company maintains a ready stock of factory-tested HONEYWELL DC-TUIO31 units,each verified for channel functionality,isolation integrity,and communication handshake on live Experion test benches.We provide 12-month warranty,terminal wiring diagrams,SIL compliance documentation,and remote commissioning support.

Contact us for a customized solution—whether you’re building a new Experion PKS system,modernizing legacy controls,or securing spares for critical operations,the HONEYWELL DC-TUIO31 delivers unmatched flexibility,safety,and intelligence at the edge of your process.

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