I/O Module | ABB Digital Input 3BSE008550R1

ABB DI821 Digital Input Module

High-performance 8-channel digital input module designed for industrial automation systems with 230V AC input capability.

Product Identification

• Brand: ABB
• Model: DI821
• Product ID: 3BSE008550R1
• Series: Digital Input Series
• Product Type: I/O Module

Electrical Specifications

• Input Voltage Range: 230V AC
• Number of Channels: 8 digital inputs
• Channel Isolation: Individual galvanic isolation
• Input Type: 230V AC digital inputs
• Power Consumption: 2.5W typical
• Operating Voltage: 24V DC system power

Physical Specifications

• Dimensions: 119mm × 45mm × 102mm (H×W×D)
• Weight: 0.3kg (0.66lb)
• Enclosure Material: High-quality thermoplastic
• Mounting Type: DIN Rail mountable
• Environmental Rating: IP20 for indoor use

Compatibility Information

• Module Termination Units: TU811, TU813, TU831, TU839, TU851
• System Compatibility: ABB 800xA and Compact HMI
• Communication Protocols: PROFIBUS DP, Modbus RTU
• Backplane Connection: Standard S800 I/O bus

Performance Features

• Individual channel status indication
• Short-circuit and overload protection
• High noise immunity design
• Fast response time: <2ms
• Hot-swappable capability
• Redundant power supply option

Environmental Specifications

• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 5% to 95% non-condensing
• Altitude Rating: Up to 2000m
• Vibration Resistance: 3.5mm amplitude (2-25Hz)

Certifications & Compliance

• RoHS Compliant (EU Directive 2011/65/EU)
• WEEE Compliance (Category 5 - Small Equipment)
• CE Marked
• UL Listed
• cULus Approved
• ATEX Certified for hazardous areas

Installation Requirements

• Standard 35mm DIN rail mounting
• Proper grounding required
• Adequate ventilation space needed
• Torque: 0.5-0.6Nm for terminal screws
• Wire size: 0.5-2.5mm² recommended

Package Contents

• ABB DI821 Digital Input Module
• Mounting accessories
• Product documentation
• Compliance certificates

Warranty & Support

• 12-Month Manufacturer Warranty
• Technical support available
• Online documentation access
• Global service network

Industrial Applications

• Process automation systems
• Manufacturing control panels
• Power generation plants
• Water treatment facilities
• Oil and gas installations
• Building automation systems

Frequently Asked Questions

• What input voltage does this module accept?
  230V AC digital inputs on all 8 channels.
• Is the module hot-swappable?
  Yes, it supports hot-swapping during operation.
• What is the warranty period?
  12-month manufacturer warranty included.