ABB DAI03
ABB DAI03

ABB DAI03 | 16-Channel Digital Input Module for Industrial Automation

Brand:​ ABB
Model:​ DAI03
Product Type:​ Digital Input Module
Core Function:​ Provides 16 independent digital input channels to acquire and transmit 24VDC digital signals from field devices (e.g., sensors, switches) to industrial control systems (PLCs, DCS).
Key Specs:​
  • Number of Channels:​ 16
  • Input Voltage:​ 24VDC (per channel)
  • Isolation:​ Galvanic isolation (channel-to-channel and channel-to-system)
  • Communication Interface:​ RS-485 (for system integration)
  • Operating Temperature:​ -20°C to +70°C
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Part number: ABB DAI03
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Description

DAI03: Product Overview​

The ABB DAI03​ is a 16-channel digital input module designed for industrial automation applications, serving as a critical interface between field devices and control systems. Its primary role is to acquire digital signals (e.g., from limit switches, proximity sensors, or push buttons) and transmit them to PLCs or DCS via an RS-485 communication interface, enabling real-time process monitoring and control.
Engineered for harsh industrial environments, the DAI03 features galvanic isolation to protect the control system from electrical noise and voltage spikes generated by field devices. This isolation ensures reliable signal transmission, even in settings with high electromagnetic interference (EMI), such as manufacturing plants or power stations.
The module’s compact design allows for easy integration into existing control cabinets, while its 16-channel capacity reduces the number of modules required, simplifying wiring and maintenance. It is widely used in industries like automotive manufacturing, water treatment, and chemical processing, where precise signal acquisition is essential for operational efficiency.

Technical Specifications​

Model Number:​ DAI03
Manufacturer:​ ABB
Product Type:​ Digital Input Module
  • Number of Input Channels:​ 16
  • Input Voltage:​ 24VDC (±10%)
  • Input Current:​ ≤10mA per channel
  • Isolation Voltage:​ 1500V AC (channel-to-system)
  • Communication Interface:​ RS-485 (Modbus RTU compatible)
  • Response Time:​ <1ms per channel
  • Operating Temperature:​ -20°C to +70°C (-4°F to 158°F)
  • Storage Temperature:​ -40°C to +85°C (-40°F to 185°F)
  • Humidity:​ 5% to 95% non-condensing
  • Protection Rating:​ IP20 (front panel)
  • Dimensions (W×H×D):​ 100mm × 75mm × 20mm (3.94in × 2.95in × 0.79in)
  • Weight:​ 0.5kg (1.1lbs)
  • Certifications:​ CE, UL, RoHS
    ABB DAI03

    ABB DAI03

Core Features & Customer Value​

1. High Isolation for Reliable Signal Transmission:​
The DAI03’s galvanic isolation (1500V AC) prevents electrical noise from field devices (e.g., motors, solenoids) from interfering with the control system. This ensures that digital signals are accurately transmitted, reducing the risk of false alarms or incorrect process adjustments—critical for maintaining operational stability in industries like chemical processing.
2. 16-Channel Capacity for Space Efficiency:​
With 16 input channels, the DAI03 minimizes the number of modules needed to acquire signals from multiple field devices. This reduces cabinet space requirements and simplifies wiring, saving time and costs during installation and maintenance. For example, a manufacturing plant can use one DAI03 to monitor 16 limit switches on a conveyor line, instead of using multiple smaller modules.
3. RS-485 Communication for Seamless Integration:​
The module’s RS-485 interface supports Modbus RTU protocol, enabling easy integration with ABB’s PLCs (e.g., AC 800PEC) or third-party control systems. This compatibility simplifies system design and reduces the need for protocol converters, saving time and money during setup.
4. Compact Design for Easy Installation:​
The DAI03’s small form factor (100mm × 75mm × 20mm) allows it to fit into crowded control cabinets, making it ideal for facilities with limited space. Its DIN rail mounting option further simplifies installation, reducing downtime during upgrades or expansions.

Typical Applications​

The ABB DAI03​ is widely used in industries requiring reliable digital signal acquisition:
  1. Automotive Manufacturing:​
    • Monitors limit switches on robotic assembly lines to ensure precise part placement.
    • Example: In a car factory, the DAI03 acquires signals from 16 limit switches on a robotic arm, transmitting data to the PLC to adjust the arm’s position.
  2. Water Treatment:​
    • Collects signals from float switches to monitor water levels in treatment tanks.
    • Example: A water treatment plant uses the DAI03 to monitor 16 float switches in a sedimentation tank, triggering pumps to add or remove water as needed.
  3. Chemical Processing:​
    • Acquires signals from pressure switches to monitor pipeline pressure.
    • Example: A chemical refinery uses the DAI03 to monitor 16 pressure switches in a pipeline, alerting operators to potential overpressure conditions.

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