Description

5 SEO Product Titles

• Honeywell MC-TAOY22 51204172-175 Analog Output Field Termination Assembly
• 51204172-175 Honeywell MC-TAOY22 16-Channel Analog Output FTA
• Honeywell TDC 3000 MC-TAOY22 51204172-175 Analog Output Module
• New Honeywell MC-TAOY22 51204172-175 UCN Interface Termination Board
• Honeywell 51204172-175 MC-TAOY22 Analog 16-Point Output Assembly

Product Overview

The Honeywell MC-TAOY22 (51204172-175) is a professional-grade Analog Output Field Termination Assembly (FTA) engineered for the TDC 3000 Distributed Control System. This 16-channel interface board facilitates the precise transmission of 4-20mA signals from the control system to field-level actuators, valves, and variable frequency drives.

Precise Analog Signal Distribution

The MC-TAOY22 serves as the critical physical interface between High-Level Analog Output (HLAO) processors and industrial field equipment. By providing 16 dedicated points of connectivity, the assembly ensures that control signals maintain high resolution and minimal drift over long distances. This precision allows operators to modulate valve positions or motor speeds with extreme accuracy, which is fundamental for maintaining process stability in chemical refineries and power generation facilities.¹ Additionally, the FTA design simplifies cable management by providing organized termination points for multi-core field wiring.

Industrial Resilience and Hardware Architecture

Honeywell engineered the 51204172-175 to function within the Universal Control Network (UCN) architecture, utilizing a robust PCB layout that resists electrical noise and interference. The module handles standard 24 Vdc power distribution to loop-powered devices, ensuring that each of the 16 channels receives stable current. Because the board features a compact, low-profile footprint, it permits high-density mounting in standard cabinet rows without causing thermal congestion. This streamlined design effectively reduces the total space required for I/O hardware while maintaining easy access for maintenance and loop testing.

System Lifecycle and Integration

As a specialized component of the TDC 3000 ecosystem, the MC-TAOY22 supports seamless integration with existing UCN hardware. While this specific model reached its official discontinuation phase in late 2018, it remains a vital spare part for facilities maintaining legacy DCS infrastructure. The assembly meets Honeywell’s rigorous quality control standards, ensuring that replacement units provide identical impedance and electrical characteristics to original installations. Consequently, upgrading or repairing existing I/O subsystems with the 51204172-175 prevents the need for costly system-wide overhauls or software reconfigurations.

Technical Characteristics