TheABB Bailey IMDSI22is a 16-channel Digital Signal Input Module designed for the Symphony Harmony and Infi 90 control systems.This slave module serves as a reliable interface for collecting discrete data from field devices, such as limit switches or relay contacts, and transmitting that status information to the system's master controller for processing.
Specifications
Model Number:IMDSI22
Input Channels:16 independent digital input channels.
Input Voltage:24 VDC or 24 VAC nominal.
Input Impedance:4.7k ohms (typical).
Power Requirements:+5 VDC at 150 mA (typical) from the backplane.
Isolation:Optically isolated up to 1500 V between field signals and logic circuitry.
Weight:0.907 kg (approx. 2.0 lbs).
Shipping Weight:2.0 kg.
Features
High-Density Monitoring:Provides 16 discrete points in a compact single-slot design, optimizing rack space in high-I/O environments.
On-Board Intelligence:Utilizes a dedicated microprocessor to handle signal debouncing and self-diagnostics, ensuring only valid data is reported.
Status Visibility:Equipped with front-panel LED indicators that provide an immediate visual "On/Off" status for each individual channel.
Flexible Logic:Compatible with both AC and DC field circuits, allowing for standardized module use across different plant sections.
Hot-Swap Capability:Can be replaced without powering down the entire system (following standard safety protocols) to minimize downtime.
Rugged Architecture:Designed specifically for the harsh conditions of power plants and industrial processing facilities.
