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The ABB AI845 (3BSE023675R1) is an 8-channel analog input module for the S800 I/O system, supporting 0-20 mA, 0-5V signals with HART® protocol. Designed for precision measurement in industrial automation, it delivers high accuracy, galvanic isolation, and advanced diagnostics. Fully compatible with ABB’s 800xA and Symphony® Plus systems, it ensures reliable data acquisition in critical process applications.
Product Specifications
Detailed Product Features:
Input Performance & Flexibility:
8 configurable analog input channels, accepting 0-20 mA, 0-5V signals (selectable per channel).
High accuracy (±0.1% of reading) with 16-bit resolution for precise process monitoring.
HART® 7 protocol support enables digital communication with smart field devices.
HART® Communication & Diagnostics:
Embedded HART® modem allows device configuration, calibration, and real-time diagnostics without signal interference.
Continuous monitoring of loop integrity, open-wire detection, and signal quality.
Supports HART® multivariable transmitters for advanced process data access.
Isolation & Protection:
Channel-to-channel and channel-to-system isolation (1500 V AC) for noise immunity and safety.
Overvoltage and reverse polarity protection on all inputs.
Wide operating temperature (-25°C to +70°C) for harsh industrial environments.
Integration & Compatibility:
Hot-swappable design for maintenance without system downtime (supports S800 I/O redundancy).
Native integration with ABB 800xA, Symphony® Plus, and third-party control systems.
Fully compliant with FOUNDATION™ Fieldbus and PROFIBUS PA via interface modules.
Applications:
Process variable monitoring (pressure, temperature, flow) in oil & gas, power, and chemical plants.
Smart instrumentation networks with HART® asset management.
Critical control systems requiring high reliability and diagnostic capabilities.
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