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DI821 3BSE008550R1

Key Features
32-channel isolated digital input module

24V DC input voltage (sinking/sourcing configurable)

High-density design saves cabinet space

Galvanic isolation between channels and system

Hot-swappable for easy maintenance

Diagnostic LEDs per channel for status monitoring

Technical Specifications
Part Number: 3BSE008550R1

Input Type: Dry contact or wet contact (24V DC)

Input Current: 3-5mA typical

Isolation: 500V AC between channels

Response Time: <1ms

Operating Temperature: -25°C to +60°C

Protection Class: IP20 (panel-mounted)

Certifications: CE, UL, ATEX (optional)

Communication & Integration
Interfaces with ABB's S800 I/O system

Compatible with AC 800M controllers

Supports PROFIBUS DP and Foundation Fieldbus

Configurable via ABB Control Builder

Typical Applications
Process automation systems

Power generation plants

Oil & gas facilities

Chemical processing

Water treatment systems

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The ABB DI821 (3BSE008550R1) is a high-density digital input module designed for ABB's System 800xA and AC 800M control systems. This rugged industrial module provides reliable signal acquisition for process automation applications.