Product Overview

The Honeywell 8C-TAOXB1 (Part Number 51307137-175) is a high-density, 16-channel Analog Output module designed for the Experion PKS Series 8 I/O platform. This module acts as the primary interface between the DCS controller and field-mounted final control elements, providing precise current loop signals to modulate valves, variable speed drives, and actuators.

A standout feature of the 8C-TAOXB1 is its integrated HART (Highway Addressable Remote Transducer) communication capability. This allows the control system to perform digital data exchange with "smart" field devices over the same 4-20mA analog wiring, facilitating remote calibration, device diagnostics, and multivariable data retrieval. With its conformal-coated electronics and robust thermal management, this module is engineered for continuous duty in the most demanding industrial process environments.

Hardware Parameters and Technical Characteristics

The 8C-TAOXB1 is built with high-fidelity conversion circuitry to ensure deterministic control and long-term signal stability.

• Channel Capacity: 16 Independent Analog Output Channels

• Output Signal Range: Settable between 2.9 mA and 21.1 mA (supports standard 4-20mA)

• Digital Communication: Native HART protocol support per channel

• Signal Resolution: ±0.05% of full scale

• Load Compatibility: Supports load resistances from 50Ω to 800Ω

• Voltage Rating: 24V DC nominal supply

• Open Circuit Voltage: 22V Maximum

• Environmental Protection: Conformal coating for resistance against moisture and contaminants

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Redundancy Options: Supports optional redundant module configurations for critical safety loops

• Physical Weight: 0.34 kg

• Module Dimensions: 29.3 x 12 x 6.5 cm

• Manufacturing Origin: USA

Industrial Applications and Operational Use Cases

This Series 8 module is a cornerstone for modern automation strategies where smart device integration is essential:

• Petrochemical and Refining: Precise positioning of control valves in high-pressure loops while utilizing HART to monitor valve travel health and friction.

• Chemical Processing: Managing complex batch dosing systems where high-density I/O (16 channels) minimizes the required cabinet footprint.

• Power Generation Facilities: Coordinating the operation of variable frequency drives (VFDs) and feed pumps with high reliability and diagnostic feedback.

• Water & Wastewater Treatment: Driving distributed actuators and flow controllers across expansive treatment sites.

• Pharmaceutical Manufacturing: Maintaining high-accuracy current signals for sensitive temperature and pressure modulation systems.