ABB IMDSI22 Bailey Digital Signal Input Module

Description

The ABB IMDSI22 is a 16-channel Digital Input Slave module engineered for the Bailey Infi 90 and Network 90 distributed control systems. This module serves as a robust interface for monitoring discrete process conditions, capturing binary signals from field equipment such as pushbuttons, limit switches, and relay contacts. By converting 24VDC field-level voltages into logic-level data, the IMDSI22 allows the master controller to track real-time equipment status. Its high-density design and optical isolation make it a standard choice for demanding industrial environments requiring reliable data acquisition.

Specifications

• Brand: ABB Bailey

• Model Number: IMDSI22

• Product Type: Digital Input Slave Module

• Series: Infi 90 / Network 90

• Input Channels: 16 independent discrete inputs

• Nominal Input Voltage: 24 VDC

• Product Net Weight: 0.52 kg (1.15 lbs)

• Dimensions: 177.8 mm x 35.6 mm x 298.5 mm

• Interface: Slave Bus backplane connection

• Isolation: Optical isolation between field and system logic

Features

• High-Precision Signal Capture: Specifically optimized for 24VDC discrete signals, ensuring accurate state detection for fast-acting control loops.

• Galvanic Isolation: Features robust optical isolation to prevent electrical noise, surges, or ground loops from damaging the sensitive internal DCS architecture.

• Compact Integration: Occupies a single slot in the Module Mounting Unit (MMU), providing 16 points of monitoring to maximize cabinet density.

• Redundant Power Input: Utilizes the system backplane's redundant power feeds to maintain operation even in the event of a partial power supply failure.

• Direct Status Feedback: Equipped with front-panel LED indicators that provide immediate visual verification of each input channel’s current state and overall module health.