Description
Core Product Summary
The Honeywell DC-TUIO31 is a Universal Input/Output (UIO) module designed for integration within the Honeywell Experion PKS Series C process automation system. It serves as a field interface unit, connecting various analog and digital field instruments directly to the C300 controller architecture. The module consolidates multiple signal types onto a single hardware platform, streamlining field wiring and reducing cabinet footprint requirements.
Each channel on the DC-TUIO31 can be independently configured via software to operate as an analog input, analog output, digital input, or digital output. The module supports 2-, 3-, and 4-wire analog field devices with integrated HART 7 communication protocols. Built-in channel-level electronic short-circuit protection and open-wire detection ensure continuous system availability and diagnostic reporting across all configured channels.
Key Technical Specifications
| Parameter | Specification |
| Product Type | Universal Input Output Module (UIO) |
| System Compatibility | Honeywell Experion PKS Series C |
| Total Channels | Up to 32 channels per module |
| Channel Configuration | Per-channel selectable: Analog Input (AI), Analog Output (AO), Digital Input (DI), Digital Output (DO) |
| Pulse Input Support | Supported (up to 4 channels) |
| Analog Input Signal Ranges | 0–20 mA, 4–20 mA |
| Analog Output Range | 0 mA, 2.9 mA to 21.1 mA |
| HART Support | HART 7 protocol on analog channels with dedicated modem per channel |
| Digital Output Type | Solid-state current sourcing, 0.5 A max per channel |
| Input Impedance (AI) | 250 Ω |
| Hardware Accuracy | 0.1% of full scale (+23.5 °C ±2 °C) |
| Channel Scan Rate | 10 ms (Input) |
| Ambient Operating Temp | -40 °C to +70 °C |
| Hazardous Location Scope | Suitable for Nonincendive / Energy Limited field wiring (Zone 2 / Division 2) |
Detailed Product Overview
The Honeywell DC-TUIO31 Universal I/O module eliminates the need for dedicated single-function I/O cards by permitting software-level signal selection per channel. In a process control architecture, the DC-TUIO31 interfaces sensors, transmitters, switches, and final control elements to the process controller, executing high-speed signal processing and diagnostic monitoring.
The flexibility of channel configuration reduces spare parts inventory, as one hardware model fulfills analog and digital point requirements across field junctions. Integrators can reconfigure channel functions dynamically in engineering software without changing hardware modules or field wiring terminations.
Integrated HART modem capabilities per channel allow direct pass-through of smart field instrument diagnostics and calibration data to asset management software without adding external HART multiplexers or secondary communication cards. Individual channel isolation and short-circuit protection ensure that field wiring faults on a single point do not compromise adjacent operations on the same module.
Dimensions, Mounting & Connection Notes
- Mounting Structure: Mounts directly to Experion Series C Input Output Termination Assemblies (IOTA).
- Carrier Sizing: Available for standard 12-inch (non-redundant) and 18-inch (redundant) Series C IOTA footprints.
- Channel Short-Circuit Limit: Individual channels isolate short circuits to under 25 mA (AI) or shut off DO channels if shorts persist past 10 ms.
- Hazardous Area Mounting: Approved for installation driving Nonincendive field wiring into Class I, Division 2 / Zone 2 environments.
- Operating Ambient Limits: Rated for operation from -40 °C to +70 °C.
DC-TUIO31
DC-TUIO31
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Control System | Experion PKS Series C | Interfaces with Series C control networks. |
| I/O Termination Assembly | Series C IOTA (12-inch non-redundant / 18-inch redundant configurations) | Physical mounting requires a matching Series C IOTA carrier. |
| Field Devices | 2-, 3-, or 4-wire current transmitters, contact inputs, solenoid loads, switch inputs | Analog I/O supports HART 7 protocol. |
| Engineering Tool | Experion PKS Control Builder / Configuration Studio | Channel types (AI, AO, DI, DO, Pulse) are defined via software. |
FAQ
What is the primary function of the Honeywell DC-TUIO31?
The Honeywell DC-TUIO31 is a universal input/output module for the Experion PKS Series C control system that provides flexible software-configurable analog and digital channel interfaces for field instrumentation.
How many channels are available on the DC-TUIO31?
The module supports up to 32 channels, each of which can be configured individually.
Which channel types can be configured on the module?
Each channel can be software-configured as an Analog Input (0–20 mA / 4–20 mA), Analog Output, Digital Input, or Digital Output. Up to four channels can also be configured for Pulse Input.
Does the DC-TUIO31 support HART communication?
Yes, the module supports HART 7 communication protocol across analog channels, utilizing an onboard HART modem per channel.
What happens if a field device shorts out on one channel?
The module features electronic short-circuit protection. A short on one channel is current-limited and isolated, preventing damage to the module and allowing other channels on the same module to continue operating normally.
What is the operating temperature range for the DC-TUIO31?
The module is rated for an extended ambient operating temperature range of -40 °C to +70 °C.
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