The DI801 is a high-performance digital input module developed by ABB, designed for industrial automation control systems to collect and transmit digital signals from field devices. Here is its detailed information:

Basic Information

• Model: DI801
• Brand: ABB
• Product Number: 3BSE008508R1
• Module Type: Digital Input Module
• Series Compatibility: Suitable for ABB's AC 800F and Freelance distributed control systems

Technical Parameters

• Number of Channels: 16 isolated digital input channels
• Input Signal Type: Dry contact (passive switch) and wet contact (active voltage signal)
• Input Voltage Range: 24V DC (typical), compatible with 19.2V DC to 30V DC
• Input Current: 3mA (typical at 24V DC)
• Isolation: Channel-to-channel and channel-to-backplane isolation, with an isolation voltage of ≥2500V AC
• Response Time: ≤1ms (for high-speed signal detection)
• Filtering Time: Configurable (1ms to 100ms) to suppress noise and contact bounce
• Operating Temperature Range: -20°C to +60°C
• Storage Temperature Range: -40°C to +85°C
• Relative Humidity: 5% to 95% (non-condensing)
• Dimensions: 119mm × 24mm × 114mm
• Weight: Approximately 0.2kg
• Protection Rating: IP20 (suitable for cabinet mounting)

Product Features

• High Reliability: Uses industrial-grade components and robust isolation design to resist electromagnetic interference (EMI) and voltage surges in harsh industrial environments, ensuring stable signal acquisition.
• Flexible Signal Handling: Supports both passive dry contacts (e.g., limit switches, buttons) and active voltage signals (e.g., PNP/NPN sensors), adapting to diverse field devices.
• Advanced Diagnostics: Equipped with channel-level diagnostic functions to detect open circuits, short circuits, and overvoltage conditions. Status LEDs for each channel indicate input activation or fault states, facilitating quick troubleshooting.
• Hot-Swappable Design: Allows online replacement without powering down the system, minimizing downtime during maintenance or upgrades.
• Easy Integration: Seamlessly connects with ABB's AC 800F controllers via the system backplane, supporting standard industrial communication protocols for unified monitoring and control.

Application Fields

• Industrial Automation: Used in production lines to collect signals from limit switches, photoelectric sensors, and emergency stop buttons, enabling real-time monitoring of equipment status.
• Process Control: Applied in chemical, petroleum, and water treatment plants to monitor valve position switches, pressure switches, and level switches, supporting process regulation.
• Power Sector: Integrates with substation and power plant control systems to collect status signals from circuit breakers, disconnect switches, and protection relays.
• Building Automation: Facilitates monitoring of access control switches, fire alarm sensors, and lighting controls in smart buildings.
• Transportation: Used in railway signaling systems and automotive production lines to capture position and status signals of moving components.