Product Short Description

Product Introduction

The ABB AX670 is a high-performance analog mixed I/O module designed for integration into ABB’s Advant OCS (Open Control System) and other industrial distributed control systems (DCS). It serves as a critical interface between field sensors, actuators, and the central control system, combining analog input (AI) and analog output (AO) functions in a single, compact unit. Engineered for precision and reliability in demanding industrial environments, the module delivers accurate signal conversion, fast response times, and robust communication capabilities. It supports a wide range of standard industrial analog signals, making it highly versatile for process monitoring and closed-loop control applications across various industries. The AX670 is a field-replaceable unit, ensuring minimal downtime during maintenance or system expansion.

Description

Technical Specifications

Core Module Parameters

  • Product Type: Analog Mixed I/O Module
  • Part Number: 3BSE000566R1
  • Compatibility: ABB Advant OCS DCS, ABB 800xA System
  • Form Factor: Compact DIN-rail mountable module
  • Dimensions (W×H×D): 85 mm × 55 mm × 120 mm
  • Weight: 0.2 kg (Net), 1.26 kg (Gross)
  • Country of Origin: Sweden
  • Protection Rating: IP20 (Front Panel)
  • Pollution Degree: 2 (IEC 60664-1)

Analog Input (AI) Specifications

  • Number of Channels: 2 differential/single-ended channels
  • Input Signal Ranges:
    • Voltage: 0–10 V DC, -10–10 V DC
    • Current: 0–20 mA, 4–20 mA
  • Input Impedance: >1 MΩ (Voltage), 50 Ω (Current)
  • Resolution: 16-bit
  • Accuracy: ±0.1% of Full Scale (F.S.)
  • Response Time: 10 microseconds
  • Isolation: Galvanic isolation between channels and system bus (2.5 kV)
  • Measurement Modes: Single-ended, differential, and ratiometric measurement

Analog Output (AO) Specifications

  • Number of Channels: 2 channels
  • Output Signal Ranges:
    • Voltage: 0–10 V DC, -10–10 V DC
    • Current: 0–20 mA, 4–20 mA
  • Output Drive Capability:
    • Voltage: ≥10 mA
    • Current: ≥500 Ω load resistance
  • Resolution: 16-bit
  • Accuracy: ±0.1% of Full Scale (F.S.)
  • Settling Time: <1 ms
  • Isolation: Galvanic isolation between outputs and system bus

Power & Communication

  • Operating Voltage: 24 V DC (±10%)
  • Power Consumption: <3 W
  • Communication Interface: Advant OCS proprietary bus (integrated with DCS)
  • Data Update Rate: Up to 1 kHz
  • Diagnostics: Built-in self-test, channel status monitoring, fault reporting

Environmental Specifications

  • Operating Temperature: -20°C to +70°C
  • Storage Temperature: -40°C to +85°C
  • Relative Humidity: 5–95% RH (Non-condensing)
  • Vibration Resistance: IEC 60068-2-6 (10–2000 Hz, 2 g)
  • Shock Resistance: IEC 60068-2-27 (15 g, 11 ms)
  • EMC Compliance: EN 61000-6-2, EN 61000-6-4

Certifications

  • Safety: CE, UL 508
  • EMC: EN 55022 Class B, EN 61000-3-2, EN 61000-3-3
  • Environmental: RoHS Compliant

Functional Features

1. High-Precision Signal Processing

  • 16-bit Resolution: Delivers exceptional resolution for both input sampling and output control, ensuring fine-grained process monitoring and regulation.
  • Low Drift Design: Utilizes high-stability components to minimize thermal drift, maintaining long-term measurement and control accuracy.
  • Fast Response: 10 μs input response time and <1 ms output settling time enable real-time control of fast-changing process variables.
  • Multi-Range Support: Flexible configuration for voltage and current signals eliminates the need for signal conditioning external hardware.

2. Robust Isolation & Noise Immunity

  • Galvanic Isolation: 2.5 kV isolation between field signals and the control system bus protects against ground loops, electrical surges, and common-mode noise.
  • Differential Inputs: Rejects common-mode interference, ensuring accurate signal acquisition in electrically noisy industrial environments.
  • EMC Hardened: Designed to meet strict industrial EMC standards, guaranteeing reliable operation in the presence of variable frequency drives and other high-power equipment.

3. Versatile Configuration & Flexibility

  • Mixed I/O Design: Combines AI and AO channels in one module, optimizing cabinet space and reducing wiring complexity.
  • Configurable Measurement Modes: Supports single-ended, differential, and ratiometric measurements to adapt to diverse sensor types.
  • Field-Programmable: Parameters such as signal range, filtering, and scaling are configurable via the DCS engineering toolset.
  • Hot-Swappable: Allows for installation, removal, or replacement without powering down the entire control system, maximizing uptime.

4. Advanced Diagnostics & Reliability

  • Continuous Self-Monitoring: Performs ongoing self-tests on all channels and internal circuits, detecting faults such as open circuits, short circuits, and out-of-range signals.
  • Fault Reporting: Generates detailed diagnostic messages and alarms for the DCS, enabling proactive maintenance and rapid troubleshooting.
  • Industrial-Grade Construction: Built with high-quality components to withstand extreme temperatures, vibration, and humidity, ensuring long service life.
  • MTBF: High Mean Time Between Failures, reducing maintenance costs and enhancing overall system availability.

5. Seamless System Integration

  • DCS Native Integration: Fully integrated with ABB Advant OCS and System 800xA, providing plug-and-play functionality and native communication.
  • Scalable Architecture: Supports easy expansion of the I/O system by adding multiple AX670 modules to the control network.
  • Standardized Wiring: Uses industry-standard terminal blocks for field connections, simplifying installation and maintenance.
  • Software Compatibility: Fully compatible with ABB’s Control Builder M engineering software for configuration, commissioning, and diagnostics.

Application Scenarios

1. Process Industries

  • Chemical & Petrochemical: Monitors and controls reactor temperatures, pressures, flow rates, and liquid levels; regulates valve positions and pump speeds for precise process control.
  • Oil & Gas: Used in upstream production (wellhead monitoring), refining (distillation column control), and pipeline operations (flow and pressure regulation).
  • Pharmaceuticals: Ensures accurate control of batch processes, including temperature, pH, and mixing speed in bioreactors and fermenters.
  • Food & Beverage: Manages parameters such as temperature, pressure, and flow in cooking, pasteurization, and packaging lines.

2. Power Generation & Utilities

  • Thermal Power Plants: Controls boiler feedwater flow, steam pressure, turbine speed, and flue gas emissions.
  • Hydroelectric Power: Monitors water level, flow rate, and gate position in dams and penstocks.
  • Renewable Energy: Integrates with solar inverter control and wind turbine pitch systems for power output regulation.
  • Water & Wastewater: Controls pump speeds, valve actuators, and chemical dosing in water treatment and distribution networks.

3. Manufacturing & Metal Processing

  • Steel & Metal Production: Monitors and controls furnace temperatures, rolling mill speeds, and material tension in continuous casting processes.
  • Automotive Manufacturing: Regulates hydraulic pressure, pneumatic pressure, and temperature in stamping, welding, and assembly lines.
  • Pulp & Paper: Controls consistency, moisture content, and reel speed in paper machines.
  • Mining: Manages conveyor speed, crusher load, and slurry flow in mineral processing operations.

4. Building Automation & HVAC

  • Commercial Buildings: Controls variable air volume (VAV) boxes, chiller plants, and boiler systems for energy-efficient HVAC management.
  • Data Centers: Monitors and regulates cooling system flow rates, temperatures, and humidity levels.
  • District Heating/Cooling: Controls pump speeds and valve positions in large-scale thermal distribution networks.

5. Marine & Offshore

  • Shipboard Systems: Manages engine control, fuel flow, ballast water systems, and cargo handling equipment.
  • Offshore Platforms: Operates in harsh marine environments for process control and safety system monitoring.
  • Dynamic Positioning: Provides precise control signals for thruster systems in offshore vessels and rigs.

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