ABB AI843 3BSE028925R1 S800 I/O Module

Overview

The AI843 Thermocouple/mV Input Module (Part No. 3BSE028925R1) provides 8 differential input channels, enabling precise measurement of Thermocouple (TC) or millivolt (mV) signals. With configurable measurement ranges for various TC types and a dedicated Pt100 channel for Cold Junction (CJ) temperature measurements, this module is ideal for accurate temperature monitoring in industrial applications.

This product is compatible with MTUs such as TU818, TU830, TU833, TU842, and TU843, and supports both single and redundant operation for enhanced reliability.

Technical Specifications:

• Brand: ABB
• Model: AI843
• Resolution: 16 bits
• Input Impedance: > 1 MΩ
• Temperature Drift: 10 ppm/°C (typ.), 25 ppm/°C (max.)
• Input Filter: 1.1 kHz rise time (0-90%)
• Update Cycle Time: 320 ms + 80 ms per active channel at 50 Hz (267 ms + 67 ms at 60 Hz)
• Maximum Field Cable Length: 600 meters (656 yards) or max. 500 Ω
• Current Consumption: 60 mA (5V Modulebus), 50 mA (24V Modulebus)
• Power Dissipation: 1.5 W
• Environment: Operating temperature from 0°C to +55°C (+32°F to +131°F)
• Mounting: Compact MTUs; max ambient temperature of 40°C (104°F) for vertical mounting
• Safety: CE, UL, ATEX Zone 2 certification
• Protection Class: IP20

Applications:

• Industrial process monitoring
• Temperature control systems
• Environmental temperature measurement
• Control and measurement systems requiring accurate temperature input

For more detailed information, please check official datasheet: Product-AI843