Description
ABB DI821 3BSE008550R1
Technical Specifications:
- Channels: 16 Digital Inputs
- Nominal Voltage: 24 V DC
- Order Code: 3BSE008550R1
Functional Features:
- High-Density Input: Consolidates 16 discrete signals into a single module footprint.
- Diagnostic Capabilities: Supports wire-break detection and short-circuit monitoring.
- Redundancy Support: Compatible with redundant S800 I/O system configurations.
Application Scenarios:
- Monitoring limit switches, pushbuttons, and relay contacts.
- Discrete status acquisition in manufacturing and process automation.
Performance Parameters:
- Input Impedance: Optimized for minimal power draw from field devices.
- Filter Time: Configurable input filtering to eliminate mechanical bounce and electrical noise.
Material Composition & Structural Features:
- Terminals: Spring-clamp or screw-terminal field connections for fast wiring.
- Indicators: Individual LED indicators for each channel to visualize real-time status.
Working Principle:
Conditions incoming 24V DC field signals through optical isolation, converting them into safe logic levels that are transmitted over the S800 I/O bus to the controller.
Installation Requirements:
- Mount on a standard S800 I/O baseplate or DIN rail.
- Connect the field ground properly to prevent ground loops.
Usage Precautions:
- Use shielded cables for field wiring in high-noise environments.
- Ensure the 24V DC supply has sufficient capacity for all connected field devices.
