Honeywell DC-TUIO31 51307772-176 Input Module The Honeywell DC-TUIO31 51307772-176, also cataloged as the DC-TUIO31 Analog Input Module, operates as a...
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Honeywell DC-TUIO31 51307772-176 Input Module
The Honeywell DC-TUIO31 51307772-176, also cataloged as the DC-TUIO31 Analog Input Module, operates as a dedicated hardware component for current-loop signal acquisition within the Experion Series C I/O subsystem.
Configured for multi-channel analog current measurement in Experion Series C distributed control architecture, the DC-TUIO31 (51307772-176 Analog Input Module) provides direct electrical interface execution for 0-20 mA and 4-20 mA field instruments, including HART-enabled transmitters.
Suffix Breakdown & Model Matrix
No official manufacturer-published decomposition of the suffix structure (51307772-176) is provided for functional segmentation. The base functional designation remains DC-TUIO31 within the Universal Input/Output IOTA family.
Hardware Specifications
Parameter
Specification
Model
DC-TUIO31 51307772-176
Brand
Honeywell
Origin
USA
Weight
0.45 kg
Dimensions
22 x 12 x 7.5 cm (shipping envelope)
Operating Temp
Not specified
Power Consumption
Not specified
Input Type
Current
Input Channels
Up to 32 per module
A/D Resolution
16 bit
Input Range
0-20 mA / 4-20 mA
Input Impedance
250 Ohm
Input Voltage Range
+33 VDC to -1 VDC
Scan Rate
10 ms
NMRR
18 dB at 50 Hz / 20 dB at 60 Hz
Crosstalk Rejection
60 dB (DC to 60 Hz)
Input Filter
Single pole, -3 dB at 6 Hz
Protection Features
Short circuit protection, open wire detection
Process I/O Signal Conditioning and HART Layer Integration
Honeywell DC-TUIO31 implements per-channel current loop conditioning for 4-20 mA HART 7 field devices. Each channel incorporates HART modem functionality to support simultaneous analog signal and digital communication overlay without external multiplexing layers.
Channel architecture includes galvanic isolation behavior at I/O termination level, enabling reduction of inter-channel coupling effects during mixed-signal acquisition. The 250 Ohm input impedance is aligned with standard loop current-to-voltage conversion for 4-20 mA transmitters.
The module supports DISOE (Sequence of Events) acquisition behavior with 10 ms scan resolution, allowing time-aligned event capture across multiple input channels in fast I/O scan priority mode.
Frequently Asked Questions (FAQ)
Q: Does the DC-TUIO31 support hot-swapping of I/O channels during operation? A: The module is implemented within a termination assembly architecture; field-side replacement behavior depends on system-level Experion Series C I/O carrier design rather than the module itself.
Q: What is the electrical limitation of the input voltage range per channel? A: Each channel supports a specified input voltage window of +33 VDC to -1 VDC, consistent with loop-powered current measurement constraints.
Q: Can HART communication operate simultaneously with analog 4-20 mA signal acquisition? A: Yes. Each channel includes a dedicated HART modem enabling concurrent analog current measurement and digital HART 7 protocol communication.
Field Installation Guidelines
The DC-TUIO31 module shall be installed on compatible Experion Series C I/O termination assemblies with verified backplane seating and secured mechanical retention.
Shield termination for 4-20 mA loops shall be grounded at a single system reference point to prevent ground loop formation. Twisted pair cabling is required for HART-enabled loops to maintain signal integrity under high-frequency modulation.
Minimum conductor separation shall be maintained between analog current loops and high-energy switching conductors to reduce induced noise coupling. All field wiring shall be verified for polarity consistency prior to energization.
