Honeywell 80366481-175 MC-TAOY22 Analog Output Module

This module converts digital signals into precise analog outputs for field actuators. It provides eight independent output channels with selectable voltage or current configurations. Engineers use this unit for control valves, variable speed drives, and chart recorders. The design incorporates high-resolution conversion for smooth, accurate control responses. Its rugged construction suits Honeywell Experion PKS and TDC 3000 systems.

Channel Architecture and Output Modes

The 80366481-175 MC-TAOY22 offers eight fully isolated analog output channels with independent settings. Each channel generates either 0-10V voltage signals or 4-20mA current loops. Users configure output types via software parameters without hardware jumpers. The module supports simultaneous mixed output types across all eight channels. This flexibility accommodates diverse actuator requirements within a single module.

Resolution and Accuracy Specifications

The module achieves 16-bit resolution for precise analog output generation. Output accuracy reaches ±0.1% of full scale at 25°C reference temperature. The digital-to-analog converters maintain linearity within ±0.05% across the entire range. Temperature drift remains below ±50 ppm per degree Celsius. This precision ensures accurate and repeatable actuator positioning for critical process loops.

Physical Dimensions and Rack Mounting

The 80366481-175 MC-TAOY22 measures 12.7 cm in width, 25.4 cm in height, and 20.3 cm in depth. It weighs approximately 1.0 kg, which ensures stable placement within the rack assembly. A steel housing with ventilated panels provides effective thermal management. The unit mounts directly into Honeywell Experion PKS or standard 19-inch racks. Its front panel locates all connectors and status indicators for convenient accessibility.

Connector Interfaces and Field Wiring

A 24-pin barrier-style terminal block handles all output terminations on the front face. This terminal block accepts wire gauges from 0.2 mm² to 2.5 mm² for secure connections. Separate terminals provide positive and return connections for each channel. The module includes dedicated shield terminals for grounding cable braids properly. Strain relief clamps protect terminations from vibration-induced movement and disconnection.

Internal Components and Conversion Architecture

The printed circuit board contains eight 16-bit DACs, eight operational amplifiers, and sixteen precision resistors. A precision voltage reference provides stable 5.000 V for conversion accuracy. The module also includes 16 surface-mount capacitors for output filtering and noise reduction. A 47 µF tantalum capacitor filters the reference voltage for enhanced stability. No battery or non-volatile memory exists on this purely analog conversion assembly.

Power Requirements and Isolation

The 80366481-175 MC-TAOY22 draws 250 mA from the 5 VDC backplane under full operational load. It also requires 200 mA from an external 24 VDC supply for output loop excitation. Channel-to-channel isolation provides 500 VDC separation for preventing ground loops. The module includes transient protection on each output for surge immunity. These features protect the control system from field wiring faults and electrical noise.

Status Indication and Diagnostic Functions

Eight front-panel LEDs indicate the operational status of each output channel individually. Green LEDs confirm normal operation while red LEDs signal open-circuit or short-circuit conditions. The module provides a fault relay output for external alarm annunciation. This relay activates when any channel exceeds its configured output range limits. Maintenance personnel can quickly identify actuator faults without complex troubleshooting procedures.

Environmental Specifications and Compliance

The 80366481-175 MC-TAOY22 operates reliably across temperatures from 0°C to 55°C. It withstands humidity levels up to 95% non-condensing without performance degradation. The module complies with IEC 61000-4-2 for electrostatic discharge immunity. Vibration tolerance meets IEC 60068-2-6 requirements for industrial environments. This robust construction suits chemical processing, power generation, and refinery automation applications.

Technical Data Sheet – Honeywell 80366481-175 MC-TAOY22