Description

The Honeywell 8C-TAIX61, with part number 51306977-175, is a high-performance analog input IOTA module purpose-built for the Honeywell Experion Process Knowledge System (PKS) and Series 8 distributed control architecture. Available in a conformal-coated version (8C-TAIX61) for harsh environments and an uncoated version (8U-TAIX61) for standard conditions, this module serves as the precision signal acquisition front-end for C300 controllers.

Engineered to accept high-level current inputs from field transmitters and sensing devices, the Honeywell 8C-TAIX61 converts 4-20mA analog signals into conditioned digital data with high accuracy and speed. Its robust design, extensive self-diagnostics, and optional redundancy make it a cornerstone of reliable process measurement in demanding industrial applications.

 

Application Scenarios

Consider a large petrochemical refinery where dozens of critical temperature, pressure, and flow loops must be monitored continuously to ensure safe and efficient operation. A single failed analog input channel could mean undetected overpressure or temperature excursion, leading to costly unplanned shutdowns or safety incidents. When the plant engineer deploys the Honeywell 8C-TAIX61 in their Series 8 I/O rack, they gain immediate visibility into every process variable. The module’s 16 channels simultaneously handle signals from multiple transmitters, while its 50ms scan rate ensures rapid detection of process deviations. With individual channel isolation preventing a single faulty transmitter from affecting adjacent channels, and real-time diagnostics alerting operators to loop break or over-range conditions, the Honeywell 51306977-175 empowers the control room team to maintain safe, continuous operation and respond proactively to developing issues.

In a power generation plant, the 8C-TAIX61 provides the backbone for boiler control and emissions monitoring. The optional redundancy feature allows the module to be paired with another Honeywell 8C-TAIX61, ensuring that a single module failure does not compromise critical control loops. Combined with its non-incendive field power supply, which eliminates the need for external marshalling in Division 2 hazardous areas, the Honeywell 8C-TAIX61 offers a safe, reliable, and streamlined solution for the most challenging process environments.

 

Parameters

Main Parameters	Value/Description
Product Model	8C-TAIX61 (Coated) / 8U-TAIX61 (Uncoated)
Part Number	51306977-175
Manufacturer	Honeywell
Product Category	Analog Input IOTA Module / Series 8 I/O Module
Input Channels	16 channels (single-ended)
Input Signal Type	4-20 mA current (2-wire or self-powered transmitters)
Input Range	4-20 mA through 200 Ω
A/D Converter Resolution	16 bits
Measurement Accuracy	±0.075% of full scale (23.5°C ± 2°C); ±0.15% of full scale (0 to 60°C)
Input Scan Rate	50 ms per channel
Normal Mode Rejection (60Hz)	19 dB
Electrical Isolation	Channel-to-backplane 2500VAC ; Single-channel independent isolation
Field Power	Non-incendive, individually protected current limiting (Class I Div 2)
Operating Temperature	0°C to +60°C
Mounting	Series 8 I/O rack; hot-swappable
Certifications	Class I Div 2 / Zone 2; CE, UL, CSA, SIL 2
Weight	Approx. 0.56 kg (non-coated)