ABB AX670 3BSE000566R1

ABB AX670 3BSE000566R1 | AX670 Series Analog Hybrid I/O Module

  • Brand: ABB
  • Model: AX670 3BSE000566R1
  • Product Type: Analog Hybrid Input/Output (I/O) Module
  • Series: AX670 Series
  • Core Function: Provides 4 analog input channels and 2 analog output channels for industrial signal acquisition and control; enables integration with PLC/DCS systems via RS-485/Modbus RTU.
  • Key Specs: 4AI (4-20mA/0-10V), 2AO (4-20mA/0-10V); RS-485/Modbus RTU communication; -25°C to +60°C operating temperature.
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Description

AX670 3BSE000566R1: Product Overview
This component is an analog hybrid input/output module within ABB’s AX670 Series, designed for integration with industrial automation systems such as PLCs and DCS. It serves as a field-to-controller interface, positioned in control cabinets to bridge sensors, actuators, and higher-level control systems. Its role is to convert physical analog signals (e.g., temperature, pressure) into digital data for processing and to translate controller outputs into analog signals for device actuation.
The core functionality involves analog-to-digital conversion (ADC) for 4 input channels (supporting 4-20mA and 0-10V signals) and digital-to-analog conversion (DAC) for 2 output channels (same signal types). It handles signal conditioning (e.g., filtering, scaling) to ensure data accuracy and includes RS-485 communication with Modbus RTU protocol for integration with ABB controllers (e.g., AC800M) or third-party systems. The module also provides basic diagnostics, such as open-circuit detection for inputs and overload indication for outputs.
It belongs to the AX670 Series, a product family optimized for modularity, compatibility, and reliability in industrial environments. The platform’s benefits include standardized form factors for easy cabinet integration, broad compatibility with ABB’s automation ecosystem (e.g., Control Builder software), and a focus on long-term availability of spare parts—critical for maintaining legacy systems.

ABB AX670 3BSE000566R1

ABB AX670 3BSE000566R1

AX670 3BSE000566R1: Technical Specifications
  • Model Number: AX670 3BSE000566R1
  • Manufacturer: ABB
  • Product Type: Analog Hybrid I/O Module
  • Number of Analog Input Channels: 4
  • Analog Input Signal Types: 4-20mA (current), 0-10V (voltage)
  • Number of Analog Output Channels: 2
  • Analog Output Signal Types: 4-20mA (current), 0-10V (voltage)
  • Resolution: 12-bit ADC/DAC (for signal conversion accuracy)
  • Communication Protocol: RS-485 (Modbus RTU)
  • Power Supply: 24V DC (±10% tolerance)
  • Operating Temperature: -25°C to +60°C
  • Storage Temperature: -40°C to +85°C
  • Protection Rating: IP20 (dust and light splash resistant)
  • Dimensions: 100mm x 100mm x 25mm (WxHxD)
  • Weight: 0.25kg
Core Features & Customer Value​
The module’s design prioritizes signal integrity, system integration, and operational efficiency. The 4AI/2AO hybrid configuration reduces the number of I/O modules required in a cabinet, saving space and wiring complexity—particularly valuable for systems with mixed analog input/output needs (e.g., a reactor monitoring temperature [input] and controlling a valve [output]). For engineers, this consolidation simplifies commissioning and inventory management.
Precision signal conversion (12-bit resolution) ensures accurate representation of field conditions. In a chemical process, for example, a 4-20mA temperature sensor reading of 12mA (mid-range) is converted to a digital value with minimal error, enabling the controller to adjust heating elements precisely. This accuracy is critical for maintaining product quality and process safety.
RS-485/Modbus RTU communication facilitates seamless integration with ABB AC800M controllers or third-party PLCs. Engineers can configure the module’s address, baud rate, and data mapping using standard Modbus tools, eliminating the need for proprietary software. This interoperability reduces integration time and allows for phased system upgrades without replacing existing components.
Robust environmental ratings (operating temperature, IP20) ensure reliability in industrial settings. The module withstands temperature fluctuations in factories or outdoor control panels and resists dust ingress in control cabinets. Its compact size (100x100x25mm) fits in dense cabinet layouts, while the lightweight design (0.25kg) simplifies handling during installation or replacement.

ABB AX670 3BSE000566R1

ABB AX670 3BSE000566R1

Typical Applications​
In a batch chemical reactor, the module acquires 4-20mA signals from temperature and pressure sensors (inputs) to monitor reaction conditions. It outputs 4-20mA signals to control a cooling water valve and a feed pump speed controller (outputs), maintaining optimal reaction parameters. The RS-485 link transmits data to an ABB AC800M controller for recipe management.
At a pharmaceutical filling line, the module reads 0-10V signals from level sensors in holding tanks (inputs) to prevent overflow. It outputs 0-10V signals to adjust the speed of filling nozzles (outputs), ensuring consistent fill volumes. The Modbus RTU protocol integrates the module with a SCADA system for real-time monitoring.
In a power plant’s cooling system, the module collects 4-20mA signals from coolant temperature sensors (inputs) across multiple heat exchangers. It sends 4-20mA outputs to control variable frequency drives (VFDs) for cooling pumps (outputs), optimizing energy use. The wide operating temperature range (-25°C to +60°C) suits outdoor control panels near cooling towers.

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