Honeywell 8C-TAOX51 Analog Output Module

Technical Overview

The Honeywell 8C-TAOX51 is a high-performance 16-channel analog output IOTA (Input/Output Termination Assembly) module engineered for the Experion PKS Series C distributed control system . This module converts digital control signals from the C300 controller into precise 4-20 mA or 0-10 VDC analog outputs for driving field devices such as control valves, actuators, positioners, and variable frequency drives . It supports 1:1 hardware redundancy and features a compact, hot-swappable design . The Honeywell 8C-TAOX51 also includes integrated HART pass-through on each channel, enabling smart instrument diagnostics and configuration . Its rugged construction and comprehensive self-diagnostics ensure reliable operation in demanding industrial environments.

Technical Specifications

Parameter	Specification
Manufacturer	Honeywell
Model Number	8C-TAOX51
Part Number	51306983-175
Product Type	Analog Output IOTA Module
System Compatibility	Experion PKS Series C, C300 Controller, PlantCruise
Output Channels	16 (isolated)
Output Signal Types	4-20 mA, 0-20 mA, 0-10 VDC
Output Accuracy	±0.1% to ±0.35% of full scale
Resolution	12-bit or 16-bit
Output Ripple	<100 mV peak-to-peak at 250Ω load
Temperature Drift	0.005% of full scale / °C
Maximum Load Resistance	750Ω
HART Support	Pass-through on each channel
Isolation	1500V DC (channel to backplane)
Redundancy	1:1 hardware redundant
Hot-Swap Capability	Yes
Power Supply	24 VDC nominal (20-30 VDC)
Power Consumption	≤5W typical
Operating Temperature	-40°C to +70°C
Storage Temperature	-55°C to +85°C
Weight	0.24 kg to 0.5 kg
Dimensions	5.1 x 26.7 x 17.8 cm
Mounting	DIN rail, Series C IOTA baseplate
Certifications	CE, UL, CSA, SIL 2
Country of Origin	USA

Key Features

16 High-Density Output Channels – The module provides 16 independent analog outputs in a single IOTA assembly, maximizing cabinet space efficiency and reducing system costs .

High Precision and Stability – The module delivers exceptional output accuracy with low temperature drift (0.005% FS/°C) and minimal output ripple (<100 mV peak-to-peak) .

HART Communication Pass-Through – Each output channel includes built-in HART pass-through, enabling remote diagnostics and configuration of smart field devices without external multiplexers .

Redundant Architecture – The Honeywell 8C-TAOX51 supports 1:1 hardware redundancy, ensuring uninterrupted analog output control for mission-critical process loops .

Comprehensive Self-Diagnostics – The module performs continuous self-monitoring and reports open-circuit, short-circuit, and output fault conditions to the control system, simplifying troubleshooting .

Hot-Swap Capability – Users can replace the module without powering down the system, minimizing process disruption during maintenance .

Fail-Safe Configuration – The module supports configurable fail-safe states (hold last value, low value, or high value), ensuring safe behavior during module or power failures .

Applications

The Honeywell 8C-TAOX51 excels in oil and gas refineries, chemical processing plants, power generation facilities, pharmaceutical manufacturing, and water treatment applications. It provides precise analog output control for valves, variable frequency drives, and positioning systems within Experion PKS-based distributed control architectures .