Overview
Manuals
Redundant UIO-2 Pair
Channel Terminal Map
Signal Mode Limits
Features:
- Redundant, coated UIO-2 IOTA accommodates the matched module pair and separates field termination from the signal-processing electronics.
- Thirty-two channel connections are divided into two 16-channel terminal groups, with an additional four-position +24 V terminal block.
- The paired UIO-2 system supports configured AI, AO, DI and DO channels; analog current signals and direct-sensor restrictions must be checked for each connected device.
The CC-TUI041 provides the field-side interface for a redundant Honeywell UIO-2 installation. Honeywell's Universal Process Cabinet guide identifies it as a redundant UIO2 IOTA, while the Series C guide uses the CC-TUIO41 designation for the coated redundant assembly paired with CC-PUIO31. Its terminal arrangement covers 32 channels rather than four analog inputs: TB1 carries channels 1–16 and TB2 carries channels 17–32. Two module positions support the redundant hardware arrangement, and TB3 supplies the documented additional +24 V connection points.
Universal I/O does not mean that every sensor can be connected directly. With the matching UIO-2 modules, channels can be configured for analog current input, analog current output, digital input or digital output. The guide supports 0–20 mA or 4–20 mA analog inputs and explicitly excludes direct voltage, thermocouple, RTD and NAMUR inputs without suitable external interfacing. Check each loop's selected mode, transmitter power requirements and terminal assignment before applying power, and treat the module configuration and termination-board identity as separate verification items.
The CC-TUI041 Honeywell Redundant Universal I/O Termination Assembly may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell CC-TUI041 official technical documentation and product links.
This multi-page Honeywell technical document contains the exact model and its technical data. Apply the values to the supplied type number and verify its revision before installation.
The Series C guide identifies the coated redundant UIO-2 IOTA as CC-TUIO41 and pairs it with CC-PUIO31; the UPC component list writes the IOTA designation as CC-TUI041. The redundant board has two IOM mounting positions. Verify the complete board and module labels and the required system release. The IOTA is not itself a universal input/output processing module.
TB1 terminates channels 1–16 and TB2 terminates channels 17–32, using the documented return and power screw pair for each channel. TB3 has +24 V connections at screw positions 1 through 4. Use the redundant IOTA drawing and terminal tables for the actual board revision; do not transplant the wiring assignments from the smaller non-redundant assembly.
UIO-2 analog inputs accept 0–20 mA or 4–20 mA current signals, and analog outputs drive 4–20 mA. A configured digital-output channel can supply up to 0.5 A under the applicable module conditions. Direct voltage, thermocouple, RTD and NAMUR inputs are not supported by the documented AI interface. Match external conversion, loop power and channel configuration to the field device before commissioning.
