Product Description

Overview

The ABB DI801 (3BSE020508R1) is a 16-channel, 24 V DC digital input module from the S800 I/O series, designed to interface discrete field signals with controllers in industrial automation systems. It is ideal for connecting sensors, switches, and contact signals to ABB Advant OCS or ABB Ability™ System 800xA, providing high-density, reliable input handling in compact control cabinet layouts.

Description

The DI801 supports a single isolated group of 16 input channels, with channel 16 capable of voltage supervision within the group. Each channel includes current limiting circuitry, EMC protection, an input status LED, and optical isolation, safeguarding the internal logic from electrical surges. The module is designed for easy installation on TU810, TU812, or TU814 terminal bases and supports hot-swap functionality to minimize process downtime.

This module provides current-sinking input logic, where the module supplies the common return, and supports voltage levels from 15 V to 30 V DC for reliable recognition of logic high signals. The DI801 is particularly suited for standard applications where cost-effectiveness and high channel density are prioritized over advanced per-channel isolation or pulse counting features.

Performance & Key Characteristics

• High Channel Density: 16 channels in a single module for compact cabinet integration.

• Isolated Input Group: One group of 16 channels with optional voltage supervision on channel 16.

• Input Filtering: Hardware and software filtering reduce contact bounce and electrical noise.

• Galvanic Isolation: Protects internal logic and controller communication from field-side surges.

• LED Indicators: Individual channel status LEDs and module-level Run/Fault indicators for rapid diagnostics.

• Hot-Swap Capability: Allows replacement without powering down the system.

• Process Connectivity: Detachable connectors for easy field wiring and maintenance.

Technical Specifications (Summary)

Applications

• Connecting discrete field signals such as switches, sensors, and contact closures to AC800M, AC410, or AC450 controllers.

• High-density digital input integration in control cabinets with space constraints.

• Real-time monitoring and signal supervision in process control systems.

FAQ

Q: Can DI801 handle voltage supervision for input channels?
A: Yes, channel 16 can be configured for voltage supervision of the input group.

Q: Does DI801 support hot-swapping?
A: Yes, when mounted on compatible TU terminal bases, the module can be replaced without system downtime.

Q: What is the maximum input current?
A: Typical input current is approximately 7 mA at 24 V DC.