ABB 3BHE022333R0101
ABB 3BHE022333R0101
ABB 3BHE022333R0101
ABB 3BHE022333R0101
ABB 3BHE022333R0101

ABB 3BHE022333R0101 | UNS3020a-EI Analog Input Module

  • Brand: ABB
  • Model: 3BHE022333R0101
  • Product Type: Analog Input Module
  • Series: UNS3020a-EI
  • Core Function: Converts analog signals (e.g., 4-20mA) from field devices into digital data for industrial control systems.
  • Key Specs: 8-channel input; 4-20mA current loop support; high accuracy (±0.1%).
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Description

3BHE022333R0101: Product Overview
The ABB 3BHE022333R0101 is an 8-channel analog input module from the UNS3020a-EI series, designed for industrial control systems such as ABB’s S800 I/O distributed architecture. It serves as a critical interface for acquiring analog signals from field-mounted devices like sensors and transmitters, converting them into digital data for processing by a central controller. This module is typically mounted in an S800 I/O station, enabling decentralized signal acquisition close to the process equipment.
The core functionality involves signal conditioning, isolation, and digitization of analog inputs (e.g., 4-20mA current loops). Each channel independently processes signals, performs linearization, and filters noise to ensure accurate representation of process variables such as temperature, pressure, or flow. The module supports HART protocol communication, allowing bidirectional data exchange for device configuration and diagnostics. It interfaces with the controller via the S800 I/O backplane, transmitting data over a high-speed fieldbus.
Belonging to the UNS3020a-EI series, this module inherits benefits such as high precision, modularity, and robust performance in harsh industrial environments. The S800 I/O platform enhances system flexibility by allowing mixed signal types (analog/digital) in the same rack, reducing cabinet space and simplifying wiring. Additionally, the module’s compatibility with ABB’s engineering tools (e.g., Control Builder M) streamlines configuration and maintenance.

ABB 3BHE022333R0101

ABB 3BHE022333R0101

3BHE022333R0101: Technical Specifications
  • Model Number: 3BHE022333R0101
  • Manufacturer: ABB
  • Product Type: Analog Input Module
  • Series: UNS3020a-EI
  • Number of Channels: 8 differential inputs
  • Input Signal: 4-20mA (configurable for 0-20mA or 0-10V)
  • Accuracy: ±0.1% of full scale
  • Resolution: 16-bit ADC
  • Isolation: Channel-to-channel and channel-to-backplane (500Vrms)
  • HART Protocol Support: Yes (for smart device communication)
  • Power Supply: 24 V DC (from S800 I/O backplane)
  • Operating Temperature: -40°C to +70°C
  • Storage Temperature: -40°C to +85°C
  • Dimensions: 45 mm (width) x 119 mm (height) x 112 mm (depth)
  • Weight: ~0.3 kg
Core Features & Customer Value
High Precision and Resolution: With 16-bit resolution and ±0.1% accuracy, the module ensures faithful representation of analog signals, critical for processes requiring tight control (e.g., chemical dosing or temperature regulation). Engineers benefit from reduced measurement errors, leading to better process optimization and product quality.
HART Protocol Support: The ability to communicate with HART-enabled devices allows technicians to remotely configure, calibrate, and diagnose field instruments (e.g., pressure transmitters) without interrupting operations. This feature reduces maintenance downtime and enhances asset management efficiency.
Electrical Isolation: Channel-to-channel and channel-to-backplane isolation (500Vrms) protects the control system from ground loops and transient voltages common in industrial settings. For end-users, this improves system reliability by preventing noise-induced errors or damage to the controller.
Modular Design: As part of the S800 I/O system, the module can be easily integrated with other I/O types (digital, serial) in the same rack. This scalability allows system expansions without architectural changes, saving engineering time and costs during upgrades.

ABB 3BHE022333R0101

ABB 3BHE022333R0101

Typical Applications
In an oil refinery, the module is used to monitor reactor temperatures via RTDs and pressure transmitters. The 4-20mA signals are converted to digital values for the DCS, which adjusts heating and cooling valves to maintain optimal reaction conditions.
At a water treatment plant, it acquires pH and dissolved oxygen levels from sensors in aeration tanks. The HART functionality enables remote calibration of these sensors, ensuring compliance with environmental discharge standards.
In a pharmaceutical manufacturing facility, the module interfaces with flow meters and level sensors in batch reactors. Its high accuracy guarantees precise ingredient mixing, critical for product consistency and regulatory compliance.

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