ABB AI845 Analog Input Module (S800 Series I/O)(XIONGBA)

ABB AI845 Analog Input Module (S800 Series I/O)(XIONGBA)

Brand Model: ABB AI845
Product Name: Analog Input Module (S800 Series I/O)
Warranty: 1 year
Size: 119 mm (height) x 45 mm (width) x 102 mm (depth)
Weight: 0.23 kg
Origin: Sweden
Inventory: Available (contact local distributors for stock levels)
Delivery Time: 3–5 business days for standard models; 3–5 weeks for custom configurations

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Description

The ABB AI845 is a high-performance analog input module designed for industrial automation systems, particularly as part of ABB’s Symphony Plus and 800xA distributed control systems (DCS). Engineered to handle voltage (0/1–5 V DC) and current (0/4–20 mA DC) signals with precision, it is widely used in applications requiring real-time data acquisition and integration with smart sensors. Below is a comprehensive overview based on verified technical insights and industry context:

Product Overview

The ABB AI845 (Hardware ID: AI845, Order Code: 3BSE023675R1) is categorized as an S800 Series I/O module within the Symphony Plus platform. It supports 8 individually configurable channels for voltage or current inputs (no mixing of signal types) and features HART pass-through communication for seamless integration with smart transmitters 614. Key applications include process control, power generation, oil & gas, and chemical processing, where accurate signal conditioning and diagnostic capabilities are critical.

 

This module features group isolation (1×8 channels) with 50 V galvanic isolation to protect against electrical noise and surges 14. Its hot-swappable design allows maintenance without system downtime, while IP20-rated protection safeguards against dust and accidental contact. The AI845 interfaces with ABB’s Symphony Plus and 800xA control platforms, leveraging FC 221/222 function blocks for parameter configuration and diagnostics 618.

Technical Specifications

Parameter Name Parameter Value
Product Model ABB AI845 (3BSE023675R1)
Manufacturer ABB
Product Type Analog Input Module (S800 Series I/O)
Input Channels 8 (single-ended unipolar for 0/4–20 mA DC or 0/1–5 V DC)
Resolution 12-bit
Accuracy ±0.1% of full-scale range (FSR)
Sampling Rate 10 ms per channel (multiplexed)
Isolation 50 V galvanic isolation (field to logic), 1×8 group isolation
Power Supply 24 VDC ±10% (68 mA typical, 76 mA max)
Operating Temperature -25°C to +70°C
Storage Temperature -40°C to +85°C
Dimensions 119 mm (height) x 45 mm (width) x 102 mm (depth)
Weight 0.23 kg
Environmental Compliance IP20, IEC 61000-6-4 (EMC), ISA-S71.04 G3
Safety Certification CE, UL 508, RoHS
Mounting 35 mm DIN rail (horizontal/vertical orientation)

Key Features and Advantages

Precision Signal Conditioning:

 

  • 12-bit resolution ensures accurate conversion of analog signals, critical for applications like pressure monitoring in oil pipelines and flow control in chemical reactors 123.
  • Automatic calibration eliminates manual adjustments, reducing setup time and errors.
  • Open circuit detection (≤5 seconds) and noise rejection (-70 dB normal mode, -90 dB common mode) enhance signal integrity in noisy environments 14.

 

HART-Enabled Smart Integration:

 

  • HART pass-through communication enables direct interaction with smart transmitters for remote diagnostics, configuration, and predictive maintenance 614.
  • Current-limited transmitter supply (24 VDC @ 23 mA per channel) ensures stable power delivery to 2-wire or 3-wire devices 14.

 

Flexible Configuration:

 

  • 8 independent channels support mixed signal types (voltage or current) in the same module, minimizing hardware complexity 618.
  • Hot-swappable design allows module replacement without disrupting operations, improving system uptime 14.
  • Multi-protocol compatibility (PROFIBUS DP, Modbus RTU) enables integration with third-party PLCs and SCADA systems 918.

 

Robust Industrial Design:

 

  • Wide temperature range (-25°C to +70°C) and ISA-S71.04 G3 corrosion resistance make it suitable for extreme environments, such as offshore platforms and mining sites 1423.
  • IP20 protection and vibration/shock resistance (IEC 60068-2-6/27) ensure reliability in rugged industrial settings.

 

Efficient Maintenance:

 

  • Front-panel LEDs provide real-time status monitoring (RUN/FAULT), simplifying troubleshooting.
  • Self-diagnostic cyclical checks detect internal errors (e.g., analog readback, reference voltage) and external channel issues (e.g., power supply failures) 14.
  • Mini USB interface allows local configuration and diagnostics without additional tools.

Application Areas

  1. Oil & Gas:
    • Monitoring flow rates in pipelines and compressor stations. HART compatibility supports predictive maintenance of smart transmitters 123.
  2. Power Generation:
    • Optimizing steam turbine control and boiler management. High accuracy ensures precise energy output regulation 2023.
  3. Chemical & Petrochemical:
    • Controlling reactor processes and distillation units. Corrosion-resistant design ensures stability in chemical plants 123.
  4. Water & Wastewater:
    • Regulating pump stations and water treatment systems. Analog inputs interface with flow meters and pH sensors, while HART communication enables remote calibration 123.
  5. Manufacturing:
    • Managing robotics and conveyor systems in automotive production. High-speed sampling supports synchronization with PLCs and SCADA systems 918.

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Installation and Maintenance

Installation:

 

  • Mounting: Secure on a 35 mm DIN rail using M4 screws, with TU810 or TU830 terminal units for power and signal connections 614.
  • Wiring: Connect 24 VDC power and route shielded cables for analog inputs. Use TB801A terminal blocks for reliable signal termination.
  • Configuration: Use ABB Freelance Engineering to assign I/O addresses and select signal types. Enable diagnostics via the module’s front-panel LEDs 14.

 

Maintenance:

 

  • Routine Checks: Inspect terminal connections quarterly for tightness and corrosion. Clean dust from vents using compressed air.
  • Firmware Updates: Regularly update firmware via Freelance Engineering to access new features and security patches.
  • Redundancy Testing: For mission-critical systems, pair with redundant processor modules (e.g., PM864AK02) and perform annual failover tests.
  • Spare Parts Management: Maintain inventory of critical modules (e.g., AI845) to reduce downtime. ABB offers expedited delivery for urgent replacements 1418.

Product Assurance

The ABB AI845 is backed by a 1-year warranty covering defects in materials and workmanship. ABB provides global technical support, including access to certified engineers and comprehensive documentation (e.g., datasheets, installation manuals) 1418. For mission-critical applications, ABB offers extended warranties (up to 5 years) and proactive maintenance plans, including annual system health checks to ensure compliance with safety standards 14.

 

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