ABB AI04–16‑Channel Thermocouple & Millivolt Analog Input Module

Description

Technical Specifications

Core Input Parameters

• Number of Channels: 16 independent, group‑isolated analog input channels
• Supported Input Types:
  • Thermocouples (TC): E, J, K, R, S, T, B, L, N, U, and Chinese standard E/S types
  • Millivolt (mV): 0–100 mV, ±100 mV (full‑scale range = 200 mV)
• A/D Resolution: 16‑bit (with polarity)
• Sampling & Update Rate: Complete update of all 16 channels in ≤ 300 ms
• Measurement Accuracy: ±0.05% of full‑scale range (FSR = 200 mV)
• Cold‑Junction Compensation (CJC): Configurable via three methods:
  • Internal RTD embedded in the module mounting base
  • External RTD connected to terminal block TB3 of the base
  • User‑defined application input

Electrical & Power

• Operating Voltage: 24 V DC (nominal)
• Power Consumption: ≤ 2 W
• Isolation: Group galvanic isolation between input channels and system bus
• Overload Protection: Built‑in overvoltage and overcurrent protection for all input channels

Mechanical & Environmental

• Dimensions: 2.5 cm × 19.1 cm × 11.4 cm (W × H × D)
• Weight: 0.2 kg
• Mounting: Standard rack‑mounting for Symphony Plus SD Series I/O subsystems
• Operating Temperature:
  • Standard: -20°C to +60°C
  • Extended: -40°C to +70°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5%–95% RH, non‑condensing
• Protection Class: IP20
• Certifications: CE, UL, CSA, ATEX (for hazardous areas)

Compatibility

• Compatible Systems: ABB Ability™ Symphony Plus DCS (SD Series I/O)
• Configuration: Software‑configurable via Symphony Plus control software; no physical jumpers required

Key Features

• 16 Independent Channels: Enables simultaneous acquisition of up to 16 thermocouple or millivolt signals, reducing system footprint and cost.
• Wide Thermocouple Compatibility: Supports all major TC types, including high‑temperature and specialized variants, for universal temperature measurement.
• High‑Precision Conversion: 16‑bit resolution and ±0.05% FSR accuracy deliver precise measurement of low‑level mV and TC signals.
• Flexible Cold‑Junction Compensation: Three CJC options ensure accurate temperature readings across varying ambient conditions.
• Group Galvanic Isolation: Protects the control system from electrical noise, ground loops, and transient voltages in industrial environments.
• Fast Sampling: 300 ms full‑channel update rate provides real‑time process data for dynamic control applications.
• Software Configuration: Fully configurable via Symphony Plus software, simplifying setup, calibration, and diagnostics.
• Industrial Robustness: Wide temperature range and hazardous‑area certifications ensure reliable operation in demanding process environments.
• Diagnostic Capabilities: Built‑in channel status monitoring and fault detection for quick troubleshooting and reduced downtime.

Application Scenarios

• Process Temperature Monitoring: Continuous temperature measurement in oil & gas refineries, chemical plants, and petrochemical facilities.
• Power Generation: Boiler, turbine, and generator temperature monitoring in thermal power plants.
• Metallurgy & Smelting: High‑temperature furnace and kiln monitoring in steel, aluminum, and metal processing.
• HVAC & Building Automation: Precise temperature control in large‑scale commercial and industrial HVAC systems.
• Pulp & Paper: Dryer, press, and reactor temperature monitoring in paper manufacturing.
• Pharmaceutical & Food Processing: Strict temperature regulation for batch reactors, ovens, and sterilization processes.
• Cement & Mining: Kiln, crusher, and conveyor temperature monitoring in heavy industrial operations.
• Test & Measurement: Laboratory and industrial test benches requiring accurate millivolt and temperature signal acquisition.