ABB 802A028D-3 – High-Precision I/O Control Module_Xiamen XingRuiJia Import and Export CO,LTD

Model：ABB 802A028D-3 – High-Precision I/O Control Module

Brand: ABB
Price range (USD): 100-20000
Country: Switzerland
Parameter: Input Signal Range:±10 V DC (typical for analog channels)
Output Type:Analog / Digital (model-dependent)
Communication Interface:INFI 90 system bus
Power Supply:24 V DC nominal
Operating Temperature:0°C to +60°C
Mounting Method:Plug-in rack mounting
Construction:Conformal-coated PCB with industrial-grade components
Weight:Approx. 0.5 kg

ABB 802A028D-3 – High-Precision I/O Control Module for Industrial Automation

Product Overview

The ABB 802A028D-3 is a high-performance I/O control module engineered for demanding industrial automation environments. It is commonly used within ABB’s INFI 90 and Bailey DCS systems, serving as a reliable interface for process control, data acquisition, and communication between field devices and the control system. Known for its exceptional stability, long-term reliability, and fast signal processing, this module ensures optimal control accuracy in critical process applications.

Key Advantages

High Reliability: Designed for continuous 24/7 operation in industrial plants with strict uptime requirements.
Precision Control: Offers stable and accurate signal conditioning for both analog and digital inputs/outputs.
Seamless System Integration: Fully compatible with ABB INFI 90/Bailey control platforms, allowing drop-in replacement or system expansion.
Enhanced Diagnostics: Equipped with self-checking features and LED indicators for status and fault identification.
Industrial-Grade Design: Withstands vibration, temperature variations, and electromagnetic interference (EMI).

Technical Specifications

Parameter	Details
Model	802A028D-3
Type	I/O Control Module
System Compatibility	ABB Bailey INFI 90 Distributed Control System
Input Signal Range	±10 V DC (typical for analog channels)
Output Type	Analog / Digital (model-dependent)
Communication Interface	INFI 90 system bus
Power Supply	24 V DC nominal
Operating Temperature	0°C to +60°C
Mounting Method	Plug-in rack mounting
Construction	Conformal-coated PCB with industrial-grade components
Weight	Approx. 0.5 kg

Functional Description

The ABB 802A028D-3 acts as a critical intermediary between field-level sensors/actuators and the DCS controller. It processes analog and digital signals, filters noise, and transmits real-time data to the central processing unit. Its onboard microprocessor ensures precise signal conversion and integrity throughout the control loop.

Applications

Power Generation: Control of turbines, boilers, and auxiliary systems.
Petrochemical and Refining Plants: Reliable monitoring of process variables like pressure, flow, and temperature.
Metallurgy and Mining: Integration with ABB DCS for equipment sequencing and load control.
Pulp & Paper Industry: Ensures stable automation in continuous process operations.
Water Treatment Plants: For managing pump stations, valve control, and feedback monitoring.

Installation & Maintenance Guidelines

Rack Mounting: Insert the module into the designated INFI 90 rack slot, ensuring correct orientation and secure locking.
Wiring: Connect to field terminals via shielded cables; maintain correct grounding to minimize noise.
Commissioning: Verify communication link status using ABB configuration tools.
Maintenance: Minimal—perform regular visual inspection, clean contacts if necessary, and monitor LED diagnostics.
Replacement: The module is designed for hot-swap capability in supported systems, minimizing downtime during maintenance.

Design & Construction Highlights

The 802A028D-3 uses industrial-grade printed circuit boards protected with conformal coating to resist dust and humidity. Its modular form factor allows easy insertion and removal from the DCS rack. Thermal stability and component-level protection ensure consistent operation under fluctuating load conditions.

Compliance and Quality Assurance

Manufactured under ABB’s ISO 9001-certified quality management, the 802A028D-3 meets or exceeds international standards for safety, electromagnetic compatibility (EMC), and reliability. It has been field-proven in critical process environments worldwide for decades.

Summary

The ABB 802A028D-3 I/O Module exemplifies ABB’s engineering excellence in distributed control technology. Its combination of precision, durability, and compatibility makes it an ideal choice for maintaining and expanding legacy Bailey/INFI 90 control systems or for ensuring long-term performance in process automation.

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