Product Overview

• Part No: 81EU01E-E
• Brand: ABB

• Category: Digital Input Module81EU01E-E is a rack-mounted digital input module used in ABB industrial distributed control systems. It collects digital switching signals from field sensors, limit switches and relay contacts, converts external discrete signals into internal bus signals and transmits data to the main controller. It serves as the signal acquisition front end to realize real-time status monitoring of on-site equipment.

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Core Features

• Multiple digital input channels, supports standard DC discrete industrial signals
• Built-in channel isolation circuit, effectively suppress electromagnetic interference in industrial cabinets
• On-board signal status indicator, convenient for on-site fault inspection and debugging
• Standard Eurocard rack structure, easy plug-in installation and direct replacement
• Optimized low power consumption design, stable continuous operation for long-term cycles

• Complete self-diagnosis function to detect abnormal channel status

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Technical Specifications

• Operating Power: 24VDC
• Input Signal Range: 10 ~ 30VDC
• Installation: Standard subrack slot mounting
• Operating Temperature: -20°C ~ +60°C

• Protection Class: IP20, suitable for control cabinet installation

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Compatibility & Application

• Matched with ABB Advant series control racks and corresponding controller units
• Widely applied in power plants, petrochemical, metallurgy, water treatment and other process industries
• Used for monitoring valve feedback, equipment running status, safety interlock switch signals