ABB AI581-S Analog Input Module

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• 1. Product Overview

  The ABB AI581-S Analog Input Module is a high-performance module designed for industrial automation and distributed control systems (DCS/PLC) to acquire and process field analog signals. It supports multiple analog input channels for voltage, current, and temperature sensor signals, providing accurate and efficient process variable data to the control system. It is widely used for process control, monitoring, and optimization.

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  2. Technical Specifications

  Parameter	Specification
  Model	AI581-S
  Type	Analog Input Module
  Channels	8 Analog Inputs (example)
  Input Signal Types	Voltage (0–10 V), Current (4–20 mA), Thermocouple/RTD (optional)
  Resolution	16-bit A/D conversion
  Accuracy	±0.1% F.S (full scale)
  Input Range	0–10 V / 0–20 mA / 4–20 mA / Thermocouple types (model dependent)
  Isolation	Channel-to-channel and system power isolation
  Response Time	≤ 10 ms (typical)
  Communication	Control system bus interface (e.g., ABB DCS/PLC backplane)
  Power Supply	24 V DC (±10%)
  Power Consumption	< 5 W
  Operating Temperature	-20 ℃ ~ +60 ℃
  Mounting	DIN rail or slot mounting
  Protection Rating	IP20
  Indicators	LEDs for module status and fault
  Size	Standard module width ~12/24 mm (model dependent)

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  3. Key Features and Benefits

  • High-precision acquisition: 16-bit resolution and ±0.1% accuracy for reliable analog signal capture.

  • Multi-signal compatibility: Supports voltage, current, and sensor inputs (thermocouple/RTD).

  • Isolated design: Channel isolation improves noise immunity and overall system stability.

  • Fast response: Quick signal response for precise process monitoring.

  • Modular installation: DIN rail/slot mounting for easy installation and maintenance.

  • Industrial reliability: Strong resistance to vibration and electromagnetic interference.

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  4. Typical Applications

  • Analog signal acquisition for industrial DCS/PLC systems

  • Process control in chemical, power, and petrochemical industries

  • Water treatment and environmental monitoring systems

  • HVAC and building automation analog inputs

  • Production line monitoring and sensor data acquisition

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  5. Installation & Usage Notes

  1. Power matching: Use a stable 24 V DC power supply.

  2. Signal wiring: Correctly wire based on signal type (voltage/current/thermocouple).

  3. Shielding and grounding: Use shielded cables and proper grounding to reduce noise.

  4. Environmental conditions: Avoid high humidity, corrosive gases, and extreme temperatures.

  5. Routine checks: Periodically inspect module status and communications.

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