ABB AI845 3BSE023675R1 Analog Input Module

Description

Technical Specifications

• Product Type: Analog Input Module
• Number of Channels: 8 (unipolar, single-ended)
• Supported Input Signals:
  • Current: 0…20 mA, 4…20 mA
  • Voltage: 0…5 V DC, 1…5 V DC
• Signal Resolution: 12-bit
• Accuracy: ±0.1% of full-scale range
• Input Impedance:
  • Voltage Input: > 10 MΩ
  • Current Input: 250 Ω
• Isolation Voltage: 50 V DC (channel-to-ground)
• Overvoltage Protection: Withstands min. ±11 V DC (non-destructive)
• Power Consumption: 3.5 W (max.)
• Operating Voltage: 24 V DC (system-supplied)
• Physical Dimensions (H x W x D): 119 mm x 45 mm x 102 mm
• Weight: 0.23 kg
• Operating Temperature: -20 °C to +70 °C
• Relative Humidity: 5% to 95% (non-condensing)
• Protection Rating: IP20
• Certifications: CE compliant
• Compatible MTUs (Terminal Units): TU810V1, TU812V1, TU830V1, TU844, TU845

Key Features & Benefits

1. Flexible Signal Configuration
   • Each channel can be independently configured for voltage or current input when used with MTU models TU844 or TU845.
   • Universal input compatibility simplifies system design and inventory management.
2. High Precision & Stability
   • 12-bit analog-to-digital conversion ensures high-resolution data acquisition.
   • Industrial-grade components and advanced signal conditioning provide excellent noise immunity and measurement stability.
3. Redundancy Support
   • Fully supports redundant operation, enabling seamless failover and maximizing system uptime for critical processes.
4. HART Protocol Pass-Through
   • Integrated HART (Highway Addressable Remote Transducer) communication capability.
   • Allows remote configuration, calibration, and diagnostics of HART-enabled field transmitters directly from the control room.
5. Advanced Diagnostics
   • Comprehensive on-board diagnostics monitor module health, input status, and power supply.
   • Features like wire-break detection for current loops provide early fault notification, minimizing downtime.
6. Channel Isolation
   • All 8 channels are galvanically isolated from the system ground.
   • Prevents ground loops, electrical interference, and cross-talk between signals, protecting the control system from field-side faults.
7. Modular & Compact Design
   • Standard S800 I/O form factor for easy installation and hot-swapping.
   • Space-efficient design ideal for dense control cabinet configurations.

Application Scenarios

• Oil & Gas Industry
  • Collects signals from pressure, temperature, and flow transmitters in drilling, refining, and pipeline operations.
  • Monitors tank levels and valve positions for safe and efficient process control.
• Chemical & Pharmaceutical Manufacturing
  • Acquires data from sensors monitoring reactor temperature, pressure, and liquid levels.
  • Ensures tight control over batch processes to maintain product purity and consistency.
• Power Generation
  • Monitors boiler parameters (water level, steam pressure, temperature) in thermal power plants.
  • Tracks winding temperatures and oil conditions in turbines and transformers.
• Metallurgy & Mining
  • Measures high temperatures in blast furnaces, converters, and continuous casting lines.
  • Monitors ore processing and material handling conveyor systems.
• Water & Wastewater Treatment
  • Reads signals from pH, conductivity, and flow meters.
  • Controls and optimizes filtration, chemical dosing, and pumping processes.
• Food & Beverage Production
  • Ensures precise monitoring of cooking temperatures, storage conditions, and ingredient flow rates.
  • Supports compliance with strict quality and safety standards.